978 lines
31 KiB
Plaintext
978 lines
31 KiB
Plaintext
# $NetBSD: HACKS,v 1.207 2020/05/10 06:38:24 maxv Exp $
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#
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# This file is intended to document workarounds for currently unsolved
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# (mostly) compiler bugs.
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#
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# Format:
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# hack title
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# cdate creation date
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# mdate mod date
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# who responsible developer
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# port ...
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# affected ports, space separated, if not "all"
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# file affected file : revision : line from : line to
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# affected files and revision and line numbers describing hack
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# multiple lines if necessary.
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# pr NNNN ...
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# problem reports this hack works around, if known. Space
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# separated.
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# regress src/regress/directory/where/test/found
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# regression test directories, if available.
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# descr
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# insert short informal description (multi-line). (Longer ones
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# should be in the PR database. More formal descriptions might
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# be in the regress tree. See above).
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# kcah
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# closing bracket.
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#
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# this is a comment.
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hack llvm needs no-unused-command-line-argument
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mdate 10 May 2020
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who maxv
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file share/mk/bsd.lib.mk 1.380 -> 1.381
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descr
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To avoid LLVM warnings when compiling the kernel with special
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CFLAGS such as KASAN on amd64 or ARMV83_PAC on aarch64, pass
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-Wno-unused-command-line-argument.
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kcah
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hack static linking with libpthread
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mdate 7 May 2019
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who maya
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file lib/libpthread/Makefile 1.92 -> 1.94
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descr
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To avoid some libc thread stub functions being picked up
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in static builds, link pthread as one section.
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kcah
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hack gcc-5.3 optimizes memset+malloc -> calloc inside calloc
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mdate 4 May 2016
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who christos
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file external/gpl2/lib/libmalloc/lib/Makefile 1.3 -> 1.5
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descr
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resulting in infinite recursion; we prevent this with
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-fno-builtin-malloc
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kcah
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hack turn off tree-vrp for parts of ufs_lookup.c
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mdate 28 April 2016
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who mrg christos
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file src/sys/ufs/ufs/ufs_lookup.c : 1.144
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pr 51094
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descr
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with -ftree-vrp enabled in ufs_lookup.c sometimes bad dir
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panicks are see.
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hcah
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hack netstat ieee1394 address printing.
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mdate 14 Nov 2000
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who matt
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file lib/libc/net/getnameinfo.c : 1.32 : 497 : 503
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descr
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Because the current implementation of IP over IEEE1394, the
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fw device address contains more than just the IEEE1394 EUI-64.
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So when printing out IEEE1394 addresses, ignore the extra stuff.
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kcah
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hack xterm vs. libterm
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mdate 01 Aug 2000
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who jdc
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file xsrc/xc/programs/xterm/main.c : 1.2 : 3609 : 3614
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pr 10383
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descr
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In order to extend the termcap string over 1023 bytes, a ZZ entry was
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introduced to point to a memory location containing the full entry.
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Without this hack, xterm will export a termcap containing the ZZ
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entry, which will then be ignored by libterm. As xterm modifies the
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exported termcap, this would cause those modifications to be ignored.
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kcah
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hack wi-at-big-endian-bus
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cdate 15 Mar 2002
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who martin
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file dev/ic/wireg.h : 1.20
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descr Add an option to access the underlying bus in big endian byte order
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to work around deficiencies in bus_space_{read,write}_* macros.
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Those don't allow the implementation of a proper pcmcia bus space
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tag.
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kcah
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hack specific knowledge of colours in curses code
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cdate Sun Apr 6 11:05:24 BST 2003
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who jdc
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file lib/libcurses/color.c : r1.24
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descr
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Swap red/blue and yellow/cyan colours for COLOR_OTHER.
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Fix is to enhance libtermcap to understand terminfo-style % sequences.
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See also:
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http://mail-index.NetBSD.org/tech-userlevel/2003/04/06/0000.html
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kcah
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hack Compensation for differing types of LINUX_USRSTACK and USRSTACK
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cdate 21 Aug 2003
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who he
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file sys/miscfs/procfs/procfs_linux.c : 1.14
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descr
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Not all ports have LINUX_USRSTACK and/or USRSTACK defined as
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literals/constants, but refer to variables of a type which is
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not "unsigned long", causing compilation of procfs_linux.c to
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fail with "makes integer from pointer without a cast". This
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is observed on e.g. the sun3 port. Ideally the "types" for
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symbols should be consistent across all ports.
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kcah
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hack gcc4 wrong uninitialized variable
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mdate 10 May 2006
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who mrg
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file bin/ksh/eval.c : 1.6
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file bin/sh/histedit.c : 1.39
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file bin/sh/parser.c : 1.60
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file crypto/dist/heimdal/kdc/524.c : 1.10
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file crypto/dist/ssh/sftp.c : 1.20
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file crypto/dist/ssh/ssh-keysign.c : 1.11
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file dist/ipf/lib/hostname.c : 1.2
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file dist/ipf/tools/ipmon.c : 1.8
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file dist/ntp/ntpd/ntp_request.c : 1.4
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file dist/ntp/ntpd/refclock_shm.c : 1.4
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file dist/ntp/sntp/timing.c : 1.3
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file dist/pppd/pppstats/pppstats.c : 1.3
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file dist/tcpdump/print-zephyr.c : 1.5
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file distrib/utils/sysinst/aout2elf.c : 1.12
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file gnu/libexec/uucp/uucico/uucico.c : 1.6
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file lib/libc/citrus/citrus_csmapper.c : 1.6
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file lib/libc/citrus/citrus_pivot_factory.c : 1.5
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file lib/libc/inet/inet_cidr_ntop.c : 1.3
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file lib/libc/inet/inet_ntop.c : 1.3
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file lib/libc/stdio/vfwprintf.c : 1.8
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file libexec/ld.elf_so/arch/m68k/mdreloc.c : 1.20
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file libexec/ld.elf_so/arch/powerpc/ppc_reloc.c : 1.40
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file libexec/ld.elf_so/arch/sh3/mdreloc.c : 1.22
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file libexec/ld.elf_so/arch/sparc/mdreloc.c : 1.39
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file libexec/ld.elf_so/arch/sparc64/mdreloc.c : 1.39
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file libexec/ld.elf_so/arch/vax/mdreloc.c : 1.21
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file libexec/ld.elf_so/arch/x86_64/mdreloc.c : 1.27
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file sbin/fsck_ext2fs/dir.c : 1.19
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file sbin/routed/rtquery/rtquery.c : 1.18
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file sys/arch/amd64/amd64/pmap.c : 1.26
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file sys/arch/i386/pci/piixpcib.c : 1.4
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file sys/arch/m68k/m68k/pmap_motorola.c : 1.4
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file sys/crypto/cast128/cast128.c : 1.9
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file sys/ddb/db_command.c : 1.86
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file sys/dev/cardbus/cardbus_map.c : 1.21
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file sys/dev/fss.c : 1.25
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file sys/dev/ic/igsfb.c : 1.39
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file sys/dev/ic/mb86950.c : 1.5
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file sys/dev/ic/midway.c : 1.71
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file sys/dev/kttcp.c : 1.18
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file sys/dev/rasops/rasops_bitops.h : 1.9
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file sys/dev/pci/cmpci.c : 1.31
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file sys/dev/pci/machfb.c : 1.45
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file sys/dev/usb/ohci.c : 1.174
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file sys/dev/usb/uhci.c : 1.196
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file sys/dev/rasops/rasops_bitops.h : 1.9
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file sys/dist/ipf/netinet/ip_nat.c : 1.10
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file sys/dist/ipf/netinet/ip_rpcb_pxy.c : 1.8
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file sys/dist/pf/net/pf.c : 1.22
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file sys/fs/udf/udf_vnops.c : 1.4
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file sys/kern/kern_sig.c : 1.219
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file sys/kern/tty.c : 1.181
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file sys/net/bpf.c : 1.116
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file sys/net/zlib.c : 1.26
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file sys/netccitt/if_x25subr.c : 1.37
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file sys/netinet/in.c : 1.107
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file sys/nfs/nfs_serv.c : 1.108
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file sys/nfs/nfs_socket.c : 1.129
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file sys/nfs/nfs_syscalls.c : 1.91
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file sys/ufs/lfs/lfs_vfsops.c : 1.207 [also (char *)]
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file usr.bin/ftp/ftp.c : 1.140
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file usr.bin/find/function.c : 1.54
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file usr.bin/mail/tty.c : 1.20
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file usr.bin/msgc/msg_sys.def : 1.33-1.34
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file usr.bin/nl/nl.c : 1.7
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file usr.bin/systat/keyboard.c : 1.23
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file usr.bin/usbhidctl/usbhid.c : 1.29
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file usr.bin/vi/cl/cl_read.c : 1.5
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file usr.bin/vi/ex/ex_cscope.c : 1.12
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file usr.bin/vi/ex/ex_tag.c : 1.19
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file usr.bin/vi/vi/v_txt.c : 1.15
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file usr.sbin/altq/altqstat/qdisc_rio.c : 1.4
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file usr.sbin/cron/do_command.c : 1.19
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file usr.sbin/timed/timed/slave.c : 1.15
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descr
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GCC 4.1 gets many uninitialised variable warnings wrong. We should
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really audit all the old hacks like this when older compilers are
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removed from the tree, as many are probably no longer required.
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The problem is that it does not recognize initialization via function
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call pointer. I.e.
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int p;
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foo(&p);
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does not mark p as initialized.
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kcah
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hack gcc4 pointer sign and strict aliasing problems
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mdate 10 May 2006
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who mrg
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file bin/ed/Makefile : 1.33
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file distrib/utils/sysinst/Makefile.inc : 1.44
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file distrib/utils/x_dhclient/Makefile : 1.15
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file games/bcd/Makefile : 1.5
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file games/dab/Makefile : 1.5
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file games/larn/Makefile : 1.17
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file games/pom/Makefile : 1.5
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file lib/libasn1/Makefile : 1.26
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file lib/libcrypt/Makefile : 1.17
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file lib/libgssapi/Makefile : 1.16
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file lib/libhdb/Makefile : 1.20
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file lib/libkadm5clnt/Makefile : 1.21
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file lib/libkadm5srv/Makefile : 1.25
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file lib/libkrb5/Makefile : 1.35
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file lib/libssh/Makefile : 1.6
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file lib/libtelnet/Makefile : 1.26
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file libexec/getty/Makefile : 1.14
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file libexec/kadmind/Makefile : 1.19
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file libexec/kpasswdd/Makefile : 1.14
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file sbin/atactl/Makefile : 1.3
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file sbin/cgdconfig/Makefile : 1.7
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file sbin/clri/Makefile : 1.13
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file sbin/dkctl/Makefile : 1.4
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file sbin/dump/Makefile : 1.33
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file sbin/fdisk/Makefile : 1.35
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file sbin/fsck_ext2fs/Makefile : 1.11
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file sbin/fsck_ffs/Makefile : 1.29
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file sbin/fsdb/Makefile : 1.18
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file sbin/newfs/Makefile : 1.30
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file sbin/newfs_sysvbfs/Makefile : 1.2
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file sbin/restore/Makefile : 1.23
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file sbin/veriexecctl/Makefile : 1.11
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file sys/lib/libsa/Makefile : 1.59
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file sys/arch/evbarm/adi_brh/brh_machdep.c : 1.24
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file usr.bin/awk/Makefile : 1.9
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file usr.bin/crontab/Makefile : 1.24
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file usr.bin/ctags/Makefile : 1.8
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file usr.bin/gzip/Makefile : 1.10
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file usr.bin/ssh/sftp/Makefile : 1.10
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file usr.bin/ssh/ssh/Makefile : 1.25
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file usr.bin/vi/build/Makefile : 1.26
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file usr.bin/telnet/Makefile : 1.40
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file usr.bin/tn3270/tn3270/Makefile : 1.36
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file usr.bin/tr/Makefile : 1.4
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file usr.sbin/amd/amd/Makefile : 1.27
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file usr.sbin/amd/amq/Makefile : 1.14
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file usr.sbin/amd/libamu/Makefile : 1.20
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file usr.sbin/amd/pawd/Makefile : 1.5
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file usr.sbin/bind/Makefile.inc : 1.22
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file usr.sbin/bind/libdns/Makefile : 1.3
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file usr.sbin/bind/named/Makefile : 1.17
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file usr.sbin/bootp/bootptest/Makefile : 1.2
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file usr.sbin/chrtbl/Makefile : 1.6
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file usr.sbin/cron/Makefile : 1.12
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file usr.sbin/dhcp/Makefile.inc : 1.20
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file usr.sbin/hprop/Makefile : 1.13
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file usr.sbin/installboot/Makefile : 1.35
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file usr.sbin/ipf/ipftest/Makefile : 1.32
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file usr.sbin/isdn/isdnd/Makefile : 1.6
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file usr.sbin/isdn/isdnmonitor/Makefile : 1.3
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file usr.sbin/isdn/isdntel/Makefile : 1.2
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file usr.sbin/isdn/isdntrace/Makefile : 126
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file usr.sbin/mopd/common/Makefile : 1.10
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file usr.sbin/mopd/mopd/Makefile : 1.9
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file usr.sbin/mopd/mopprobe/Makefile : 1.7
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file usr.sbin/makefs/Makefile : 1.17
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file usr.sbin/mscdlabel/Makefile : 1.5
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file usr.sbin/pkg_install/add/Makefile : 1.7
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file usr.sbin/pkg_install/create/Makefile : 1.5
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file usr.sbin/pkg_install/lib/Makefile : 1.28
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file usr.sbin/ntp/ntpd/Makefile : 1.10/1.11
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file usr.sbin/ntp/ntptime/Makefile : 1.4/1.5
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file usr.sbin/pppd/Makefile.inc : 1.3
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file usr.sbin/pppd/pppd/Makefile : 1.38
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file usr.sbin/rarpd/Makefile : 1.10
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file usr.sbin/rbootd/Makefile : 1.10
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file usr.sbin/rpc.pcnfsd/Makefile : 1.17
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file usr.sbin/tcpdump/Makefile : 1.42
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descr
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GCC 4.1 warns on pointer sign comparision/assignments and lots of
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code does not conform. For now we use -Wno-pointer-sign and
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-fno-strict-aliasing.
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kcah
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hack disable ctf for gcc-4.8 build
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mdate April 3 2014
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who christos
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file external/gpl3/gcc/usr.bin/Makefile.frontend : 1.4
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file external/gpl3/gcc/usr.bin/Makefile.backend : 1.5
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descr
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nbctfconvert -g -L VERSION -g fold-const.o
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ERROR: fold-const.c: failed to get mapping for tid 79154 \
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((null)) <13532>
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kcak
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hack emacs aborting on exit (libgcc issue)
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mdate 7 November 2011
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who christos
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file external/gpl3/gcc/dist/gcc/unwind-dw2-fde.c : 1.2
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descr
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GCC 4.5.3 now calls __unregister_frame_info_bases() on unloading/exit
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to do just that. If the symbol requested is not found, then it aborts.
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emacs 23.3 triggers this assertion. For now disable aborting, and
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silently ignore.
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kcah
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hack cross-building hack on Darwin
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mdate 20 July 2008
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who agc
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file src/distrib/common/Makefile.mdset : 1.33
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descr
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Darwin has problems with getopt() when used in mdsetimage -v,
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due to the difference between BSD and libiberty() getopt
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implementations, more fully described in
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http://mail-index.netbsd.org/current-users/2008/06/27/msg003242.html
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and the subsequent thread. For just now, we just have an ugly
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workaround not to call mdsetimage with the -v argument on Darwin
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kcah
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hack avoid rebuilding asn1 libraries
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mdate 03 August 2008
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who veego
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file src/crypto/dist/heimdal/lib/asn1/gen.c : 1.10
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file src/lib/libasn1/Makefile : 1.32
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file src/lib/libhdb/Makefile : 1.23
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file src/lib/libgssapi/Makefile : 1.20
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file src/lib/libhx509/Makefile : 1.3
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pr 9702 39185
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descr
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asn1_compile does not check if generated header files do not have to
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be rebuild.
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Generate .hx files and copy it in the Makefiles if they changed.
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kcah
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hack Disable fortification for /usr/bin/makeinfo
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cdata 24 Mar 2014
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who tron
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file src/external/gpl2/texinfo/bin/makeinfo/Makefile : 1.1
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pr N/A
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descr
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If "makeinfo" is compiled with "-D_FORTIFY_SOURCE=2" using GCC 4.8.3
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it fails to process certain texinfo files, e.g. "cl.texi"
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included in the Emacs 24.3 distribution.
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kcah
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hack Disable Stack Smash Protection for /usr/X11R7/bin/xauth
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cdata 05 Apr 2014
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who tron
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file src/external/mit/xorg/bin/xauth/Makefile : 1.4
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pr N/A
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descr
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If "xauth" is compile with "USE_SSP" set to "yes" it fails
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mysteriously with an error message like this:
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/usr/X11R7/bin/xauth: file /foo/bar/.Xauthority does not exist
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/usr/X11R7/bin/xauth: unable to link authority file /foo/bar/.Xauthority, use /foo/bar/.Xauthority
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The compiler seems to get confused about the two filename variables
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used in the link(2) system call.
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kcah
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hack g++ 5.x barfs on volatile in constexpr initializers
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cdata 27 Aug 2015
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who pooka
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file src/lib/libpthread/pthread_types.h : 1.17
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pr lib/49989
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descr
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Trying to use e.g. pthread_mutex_t m = PTHREAD_MUTEX_INITIALIZER
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in C++ results in:
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error: temporary of non-literal type '__pthread_mutex_st'
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in a constant expression
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constexpr mutex() _NOEXCEPT : __m_(PTHREAD_MUTEX_INITIALIZER) {}
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[...]
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include/pthread_types.h:101:8: note: '__pthread_mutex_st' is
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not literal because:
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struct __pthread_mutex_st {
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^
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include/pthread_types.h:103:17: note: non-static data
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member '__pthread_mutex_st::ptm_errorcheck' has volatile type
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pthread_spin_t ptm_errorcheck;
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kcah
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hack libm cabs{,f,l} and g++
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cdata 11 Jan 2016
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who christos
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pr lib/50646
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file src/external/gpl3/gcc.old/dist/libstdc++-v3/include/std/complex : 1.2
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file src/external/gpl3/gcc/dist/libstdc++-v3/include/std/complex : 1.2
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descr
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Our cabs and cabsf have a different argument format on some architectures
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and for that we have created in libm/compat_cabs{,f}.c. The standard
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versions in libc are __c99_cabs{,f,l} and there are __RENAME()'s in
|
|
<complex.h>. G++ uses __builtin_cabs{,f,l} to implement those and they
|
|
translate by default to cabs{,f,l} which gets defined to cabs{,f} (the
|
|
wrong function) and an undefined cabsl. I've changed <complex> to use
|
|
the __c99_cabs{,f,l} directly. Using the __builtin_cabs{,f,l} in gcc is
|
|
still broken.
|
|
kcah
|
|
|
|
port vax
|
|
|
|
hack gcc4/vax ICE
|
|
cdate Sat Dec 22 08:17:57 2007 UTC
|
|
who tsutsui
|
|
file sys/arch/vax/conf/Makefile.vax : 1.79
|
|
descr
|
|
GCC4 on vax gets ICE on compiling sys/ddb/db_command.c.
|
|
-fno-tree-ter prevents it so add it to COPTS.
|
|
kcah
|
|
|
|
hack gcc4/vax compiler crash
|
|
cdate Fri Jun 30 22:39:12 PDT 2006
|
|
who mrg
|
|
file bin/csh/Makefile : 1.27
|
|
file lib/i18n_module/UTF7/Makefile : 1.2
|
|
descr
|
|
GCC4 on vax crashes. -O0 stops it happening so far...
|
|
kcah
|
|
|
|
hack declare boolean_t in two IPF user-mode programs
|
|
cdate Tue Mar 7 19:19:20 CET 2006
|
|
who he
|
|
file dist/ipf/ipsend/iptests.c : 1.8
|
|
dist/ipf/ipsend/sock.c : 1.7
|
|
descr
|
|
The IPF user-mode programs ipsend and iptest first
|
|
include <sys/types.h> without _KERNEL defined, and
|
|
later include <sys/file.h> with _KERNEL defined.
|
|
This causes a build failure when building for vax,
|
|
since <sys/device.h> ends up being included without
|
|
bollean_t being defined by <sys/types.h>.
|
|
Build failure and further details documented in
|
|
PR#32907.
|
|
kcah
|
|
|
|
hack pcc 0.9.9 large string literals
|
|
cdat 8 July 2008
|
|
who gmcgarry
|
|
file sys/conf/param.c : 1.58
|
|
descr
|
|
Workaround for pcc 0.9.9 not handling large string literals
|
|
which causes kernels with 'options INCLUDE_CONFIG_FILE' to
|
|
fail compilation.
|
|
There is a proposal on the pcc mailing list to stuff config
|
|
file in ELF section.
|
|
kcah
|
|
|
|
hack xorg warnings
|
|
cdat 30 July 2008, 3 June, 2013
|
|
who mrg
|
|
file external/mit/xorg/lib/libSM/Makefile : 1.2
|
|
external/mit/xorg/lib/libX11/Makefile.libx11 : 1.10
|
|
external/mit/xorg/lib/libXext/Makefile : 1.2
|
|
external/mit/xorg/lib/libXfont/Makefile : 1.2
|
|
descr
|
|
Disable several warnings or use -Wno-error across Xorg sources
|
|
while we get them working
|
|
kcah
|
|
|
|
hack 32 bit time leftovers
|
|
cdat 11 January 2009
|
|
who christos
|
|
file lib/libc/time/localtime.c : 1.41
|
|
lib/libc/time/zic.c : 1.23
|
|
descr
|
|
The timezone compiled files still contain 32 bit time_t
|
|
quantities. I did not want to version the files because
|
|
the ``parser'' is too ugly for words. What needs to be
|
|
done, is to rewrite the parser from scratch also to avoid
|
|
potential core-dumps from parsing invalid files.
|
|
kcah
|
|
|
|
hack 32 bit time leftovers
|
|
cdat 11 January 2009
|
|
who christos
|
|
file various
|
|
descr
|
|
Many filesystem on-disk formats have 32 bit times.
|
|
kcah
|
|
|
|
hack gcc 4.5 fsdb miscompile
|
|
date Sat Nov 9 11:03:02 EST 2013
|
|
who christos
|
|
file src/sbin/fsdb/Makefile : 1.36 (and earlier)
|
|
descr
|
|
src/sbin/fsdb/fsdb.c: In function 'findblk':
|
|
src/sbin/fsdb/fsdb.c:610:1: error: unrecognizable insn:
|
|
(insn 941 940 942 134 src/sbin/fsdb/fsdb.c:589 (set (reg:SI 604)
|
|
(subreg:SI (mem/s/j:DI (plus:SI (mult:SI (reg:SI 602)
|
|
(const_int 8 [0x8]))
|
|
(reg/f:SI 601)) [0 curinode.99_378->dp2.di_ib S8 A32]) 4)) \
|
|
-1 (nil))
|
|
src/sbin/fsdb/fsdb.c:610:1: internal compiler error: in \
|
|
extract_insn, at recog.c:2103
|
|
kcah
|
|
|
|
hack gcc 4.8 gcc miscompiles
|
|
date Sat Nov 9 16:35:18 EST 2013
|
|
who christos
|
|
file distrib/utils/x_ping/Makefile : 1.8
|
|
file distrib/vax/miniroot/Makefile.inc : ?
|
|
file distrib/vax/ramdisk/Makefile : ?
|
|
file external/gpl3/gdb/lib/libdecnumber/Makefile : 1.3
|
|
file sbin/fsdb/Makefile : 1.36
|
|
file sbin/newfs_ext2fs/Makefile : 1.6
|
|
file sbin/ping/Makefile : 1.17
|
|
file usr.sbin/mtrace/Makefile : 1.11
|
|
descr
|
|
external/gpl3/gcc/dist/gcc/expmed.c:2781:1:
|
|
internal compiler error: in change_address_1, at emit-rtl.c:2019
|
|
external/gpl3/gcc/dist/gcc/recog.c:770:1:
|
|
internal compiler error: in change_address_1, at emit-rtl.c:2019
|
|
external/gpl3/gcc/dist/libdecnumber/decNumber.c:7214:3:
|
|
internal compiler error: in change_address_1, at emit-rtl.c:2019
|
|
sbin/ping/ping.c:679:1:
|
|
internal compiler error: in change_address_1, at emit-rtl.c:2019
|
|
sbin/newfs_ext2fs/mke2fs.c:681:1:
|
|
internal compiler error: in reload_combine_note_use,
|
|
at postreload.c:1561
|
|
external/gpl3/gdb/dist/libdecnumber/decNumber.c:7214:3:
|
|
internal compiler error: in change_address_1, at emit-rtl.c:2019
|
|
usr.sbin/mtrace/mtrace.c:1655:1:
|
|
internal compiler error: in change_address_1, at emit-rtl.c:2019
|
|
kcah
|
|
|
|
hack gcc 5.4 cc1 miscompile
|
|
date Tue Feb 14 07:19:57 JST 2017
|
|
who rin
|
|
pr port-vax/51967
|
|
file external/gpl3/gcc/usr.bin/backend/Makefile : 1.35
|
|
descr
|
|
cc1 aborts due to SIGILL when compiling the sample code attached
|
|
to the PR. As a workaround, compile dse.c with -O0.
|
|
kcah
|
|
|
|
hack libssh miscompile
|
|
cdate Tue Feb 14 17:58:06 JST 2017
|
|
mdate Tue Feb 14 18:57:39 JST 2017
|
|
who rin
|
|
file crypto/external/bsd/openssh/lib/Makefile : 1.20
|
|
descr
|
|
poly1305.c and umac.c are miscompiled, which results in login
|
|
failure to/from external hosts via ssh.
|
|
kcah
|
|
|
|
hack mandoc miscompile
|
|
date Tue Feb 14 18:03:05 JST 2017
|
|
who rin
|
|
file external/bsd/mdocml/lib/libmandoc/Makefile : 1.8
|
|
descr
|
|
mandoc(1) receives SIGILL in in_line_argn() from mdoc_macro.c.
|
|
kcah
|
|
|
|
hack libX11 miscompile
|
|
date Thu Feb 16 10:00:22 JST 2017
|
|
who rin
|
|
file src/external/mit/xorg/lib/libX11/Makefile.libx11 : 1.18
|
|
descr
|
|
lcWrap.c is miscompiled, which results in input failure via XIM.
|
|
Besides, some clients, e.g., pkgsrc/x11/kterm, receive SIGSEGV.
|
|
kcah
|
|
|
|
port arm
|
|
|
|
hack gcc-unsigned-compare
|
|
cdate 09 Mar 2002
|
|
mdate 18 Mar 2002
|
|
who bjh21
|
|
file dist/bind/lib/nameser/ns_parse.c : 1.3
|
|
file dist/dhcp/minires/ns_parse.c : 1.3
|
|
file dist/dhcp/omapip/result.c : 1.2
|
|
file dist/dhcp/server/failover.c : 1.3
|
|
file gnu/dist/toolchain/bfd/bfd.c : 1.2
|
|
file gnu/dist/toolchain/bfd/format.c : 1.2
|
|
file gnu/dist/toolchain/gdb/target.c : 1.2
|
|
file sys/kern/vfs_subr.c : 1.172
|
|
descr When checking that a potentially-unsigned enum is >= 0, assign
|
|
it to an int first. This is necessary to avoid "comparison is
|
|
always true" warnings with -fshort-enums. Casting to an int
|
|
really should be enough, but turns out not to be.
|
|
kcah
|
|
|
|
hack gcc-4.5 arm CNAME hostname lookup failure on
|
|
certain DNS environment (probably -ftree-ter problem)
|
|
cdate Sat Dec 24 04:59:00 UTC 2011
|
|
mdate
|
|
who tsutsui
|
|
file lib/libc/net/Makefile.inc 1.79
|
|
descr Hostname lookup against CNAMEs by some commands fails
|
|
on certain DNS environments if lib/libc/net/gethnamaddr.c
|
|
(ping(8) etc) and lib/libc/net/getaddrinfo.c (ftp(1) etc)
|
|
are compiled with -O2, even though nslookup(1) against
|
|
the same CNAME returns proper hostname.
|
|
They works properly if compiled with -O2 -fno-tree-ter.
|
|
Also -O2 fails but -O2 -fno-tree-ter works on the following
|
|
test case in gcc bugzilla:
|
|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48863#c4
|
|
kcah
|
|
|
|
port sh3
|
|
|
|
hack gcc4-sh3-bz2
|
|
cdate Sun May 21 03:34:57 UTC 2006
|
|
mdate Fri May 16 13:13:00 UTC 2008
|
|
who mrg, tsutsui
|
|
file lib/libbz2/Makefile : 1.10
|
|
descr
|
|
The in-tree GCC 4.1-based compiler generated too-far
|
|
pc-relative addresses. Hack is to build with
|
|
-fno-loop-optimize.
|
|
kcah
|
|
|
|
port m68000
|
|
|
|
hack gcc4-m68000
|
|
cdate Fri Feb 8 10:29:37 PST 2008
|
|
mdate Sun May 4 15:37:19 UTC 2008
|
|
who mrg, tsutsui
|
|
file rescue/Makefile : 1.21
|
|
file sbin/dump_lfs/Makefile : 1.9
|
|
file sbin/fsck_ffs/Makefile : 1.35
|
|
file sbin/fsdb/Makefile : 1.22
|
|
file share/mk/sys.mk : 1.96
|
|
file usr.sbin/ndbootd/Makefile : 1.5
|
|
descr
|
|
Several internal compiler errors with gcc -O1
|
|
around 64bit integer arithmetic.
|
|
This hack uses -O1 and adds some -fno-tree-foo options
|
|
to avoid the problem.
|
|
This might be related with GCC Bugzilla Bug 32424.
|
|
kcah
|
|
|
|
port m68k,sh3,vax
|
|
|
|
hack gcc-4.8.1
|
|
cdate Wed Nov 6 20:41:35 EST 2013
|
|
who christos
|
|
file src/external/gpl3/gcc/libstdc++-v3/Makefile : 1.6
|
|
descr
|
|
compile hashtable_c++0x.cc with -O2 instead of -Os to
|
|
produce missing instantiation of std::lower_bound expansion
|
|
for unsigned long.
|
|
kcah
|
|
|
|
port sparc
|
|
|
|
hack avoid NULL pointer derefs in savefpstate IPIs and GCC 4.5.3
|
|
cdate Sun Aug 14 19:26:48 PDT 2011
|
|
who mrg
|
|
file sys/arch/sparc64/sparc/cpu.c : 1.234
|
|
file sys/arch/sparc64/sparc/cpuvar.h : 1.90
|
|
file sys/arch/sparc64/sparc/genassym.cf : 1.67
|
|
file sys/arch/sparc64/sparc/locore.s : 1.265
|
|
descr
|
|
Something is wrong with GCC 4.5.3 and the savefpstate IPI.
|
|
Post newlock2 there was a bug where a lock was reduced from
|
|
IPL_SCHED to IPL_VM (?) and occasionally savefpstate IPI
|
|
would crash due to NULL IPI. This was fixed by re-using the
|
|
right IPL value. However, GCC 4.5.3 build kernels have the
|
|
same problems. For now, the hack is re-instated.
|
|
kcah
|
|
|
|
|
|
port mips
|
|
|
|
hack mips-shared-linker-load-address
|
|
cdate Fri Oct 7 08:33:10 UTC 2005
|
|
who simonb
|
|
file src/sys/kern/exec_elf32.c : 1.107
|
|
descr
|
|
With COMPAT_16 or previous enabled (which enables
|
|
ELF_INTERP_NON_RELOCATABLE) a recent ld.elf_so will
|
|
load and run at address 0. The check to fix this in
|
|
rev 1.107 only checks the first psection of the ELF
|
|
executable, which may not be loadable. A more correct
|
|
fix is to check the first loadable psection instead of
|
|
just the first psection.
|
|
kcah
|
|
|
|
hack mips-duplicate-ras-end-label
|
|
cdate Sat Sep 2 23:29:42 2006
|
|
who martin
|
|
file src/regress/sys/kern/ras/ras3/Makefile : 1.3
|
|
descr
|
|
Add -fno-reorder-blocks to CFLAGS to avoid duplicate
|
|
labels by duplicated __asm output from RAS_END()
|
|
macro.
|
|
kcah
|
|
|
|
hack mips-mcount-assembler-warning
|
|
cdate Tue Jul 29 14:16:52 UTC 2008
|
|
who lukem
|
|
file src/lib/libc/gmon/Makefile.inc : 1.8
|
|
descr
|
|
Workaround for PR port-mips/39192.
|
|
common/lib/libc/gmon/mcount.c generates a (fatal)
|
|
assembler warning on MIPS:
|
|
Warning: No .cprestore pseudo-op used in PIC code
|
|
Add COPTS.count.c+=-Wa,--no-warn to avoid -Wa,--fatal-warnings
|
|
kcah
|
|
|
|
port i386
|
|
|
|
hack use volatile intermediate variable to enforce rounding
|
|
cdate Tue Aug 1 22:15:55 MEST 2006
|
|
who drochner
|
|
file src/lib/libm/src/lrintf.c : 1.4
|
|
file src/lib/libm/src/s_rintf.c : 1.8
|
|
descr
|
|
gcc-4 does subsequent operations on "float" values within
|
|
the i387 FPU without rounding the intermediate results
|
|
kcah
|
|
|
|
port x86
|
|
hack turn off optimization for biosdisk_ll.c because otherwise
|
|
we are pass the wrong arguments to biosdisk_read().
|
|
$ cd /usr/src/sys/arch/i386/floppies/bootflopp-com
|
|
$ qemu-system-i386 -nographic -fda boot-com1.fs -boot a
|
|
cdate Mon Apr 7 21:09:55 2014 UTC
|
|
who christos
|
|
file src/sys/arch/i386/stand/lib/Makefile : 1.38
|
|
descr
|
|
Turning on DISK_DEBUG shows the problem. We should find
|
|
out which option is causing this.
|
|
hcah
|
|
|
|
port powerpc
|
|
|
|
hack avoid using __builtin_return_address(0) because it fails in
|
|
Xorg's module loader
|
|
cdate Sat Sep 27 03:52:05 UTC 2008
|
|
who macallan
|
|
file src/libexec/ld.elf_so/rtld.c : 1.121
|
|
descr
|
|
workaround for PR port-macppc/37812
|
|
kcah
|
|
|
|
hack define TARGET_SECURE_PLT and HAVE_AS_TLS because when
|
|
building the native compiler via build.sh those don't defined
|
|
properly.
|
|
cdate Sat Mar 12 08:00:00 UTC 2011
|
|
who matt
|
|
file src/gnu/dist/gcc4/gcc/config/rs6000/netbsd.h : 1.7
|
|
descr
|
|
see above
|
|
kcah
|
|
|
|
port powerpc64
|
|
|
|
hack include _errno.c in libposix so that __errno resolves. It
|
|
should resolve from libc's errno, but somehow it does not.
|
|
Linker bug?
|
|
cdate Thu Oct 27 13:19:47 EDT 2011
|
|
who christos
|
|
file src/lib/libposix/Makefile: 1.15
|
|
file src/lib/librt/Makefile: 1.14
|
|
descr
|
|
workaround for:
|
|
libposix_pic.a(cerror.pico)(.text+0x14): unresolvable \
|
|
R_PPC64_REL24 relocation against symbol `.__errno'
|
|
kcah
|
|
|
|
hack rename data() function in mdocml to avoid redefined error.
|
|
Compiler/Assembler bug?
|
|
cdate Sat Oct 29 11:16:01 EDT 2011
|
|
who christos
|
|
file src/external/bsd/mdocml/tbl_data.c: 1.2
|
|
descr
|
|
workaround for:
|
|
{standard input}: Assembler messages:
|
|
{standard input}:105: Error: symbol `.data' is already \
|
|
defined
|
|
kcah
|
|
|
|
port emips
|
|
|
|
hack Add nop between ctc1 and mtc0 to avoid assembler internal
|
|
error
|
|
cdate Sat Oct 29 16:57:34 EDT 2011
|
|
who christos
|
|
file src/sys/arch/mips/mips/mips_fpu.c: 1.7
|
|
descr
|
|
workaround for:
|
|
{standard input}: Assembler messages:
|
|
{standard input}:730: Internal error!
|
|
Assertion failure in append_insn at /usr/src/external/gpl3/\
|
|
binutils/dist/gas/config/tc-mips.c line 2910.
|
|
kcah
|
|
|
|
port ia64
|
|
|
|
hack libgcc unwind dummy function
|
|
cdate Fri Apr 17 14:31:03 CEST 2015
|
|
who martin
|
|
file src/external/gpl3/gcc/dist/libgcc/config/ia64/unwind-ia64.c: 1.4
|
|
descr
|
|
Add an empty _Unwind_FindTableEntry() implementation.
|
|
In the end we will use our libc stuff, and this should
|
|
go away again.
|
|
kcah
|
|
|
|
port x68k
|
|
|
|
hack compiler error with gcc 4.5.x
|
|
cdate Fri May 24 13:23:01 EDT 2013
|
|
who christos
|
|
file src/external/gpl3/gcc/usr.bin/bakend/Makefile: 1.17
|
|
xsrc/external/mit/xorg/lib/libGLU/Makefile: 1.11
|
|
descr
|
|
workaround for:
|
|
internal compiler error: in cselib_record_set, at cselib.c:1999
|
|
kcah
|
|
|
|
hack fallback to /usr/bin/clang-cpp in rpcgen
|
|
cdate Wed Jun 5 15:49:27 CEST 2013
|
|
who joerg
|
|
file src/usr.bin/rpcgen/rpc_main.c : 1.35
|
|
descr
|
|
It is undecided which compiler owns /usr/bin/cpp and whether it should
|
|
exist in a MKGCC=no world. To allow rpcgen to work out-of-the-box,
|
|
if either gcc or clang is installed, use /usr/bin/clang-cpp as fallback.
|
|
This applies only if RPCGEN_CPP is not set and /usr/bin/cpp is not executable.
|
|
kcah
|
|
|
|
port hppa
|
|
|
|
hack compiler error with gcc 4.5.x
|
|
cdate Tue Jul 23 07:42:28 BST 2013
|
|
who skrll
|
|
file src/sys/lib/libkern/Makefile.libkern: 1.26
|
|
descr
|
|
workaround for unanalysed codegen bug affecting md5c.c.
|
|
kcah
|
|
|
|
hack gdb vs _rtld_debug_state problem
|
|
cdate Thu Mar 5 09:49:53 UTC 2015
|
|
who skrll
|
|
file src/libexec/ld.elf_so/rtld.c: 1.175
|
|
descr
|
|
workaround for problem where gdb misses the breakpoint on
|
|
_rtld_debug_state when the function is only the
|
|
bv,n %r0(%rp) instruction - the nullify seems to
|
|
confuse something
|
|
kcah
|
|
|
|
port mips64*
|
|
hack compiler crashes on mips64* with optimization enabled
|
|
cdate Tue May 13 18:46:48 UTC 2014
|
|
who macallan
|
|
file src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/Makefile.inc: 1.6
|
|
src/external/lgpl3/gmp/lib/libgmp/arch/mips64eb/config.h: 1.5
|
|
src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/Makefile.inc: 1.6
|
|
src/external/lgpl3/gmp/lib/libgmp/arch/mips64el/config.h: 1.5
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|
descr workaround for n32 gcc doing unaligned 64bit accesses when optimizing
|
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pr 48696
|
|
kcah
|
|
|
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port vax
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hack compile boot with -O1
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|
cdate Sat May 24 09:40:58 CEST 2014
|
|
who martin
|
|
file src/sys/arch/vax/boot/boot/Makefile: 1.41
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|
descr /boot does not work when compiled with -O2 and gcc 4.8
|
|
kcah
|
|
|
|
port vax
|
|
hack compile nir.c in gallium with -O1
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|
cdate Mon Oct 28 14:39:35 EDT 2019
|
|
who christos
|
|
file /cvsroot/src/external/mit/xorg/lib/gallium/Makefile 1.36
|
|
descr gallium does not compile.
|
|
kcah
|
|
|
|
port sh3
|
|
hack compile parse.c in battlestar with -Wno-restrict
|
|
cdate Mon Oct 28 14:39:35 EDT 2019
|
|
who christos
|
|
file /cvsroot/src/games/battlestar/Makefile 1.11
|
|
descr fails to compile, confused by char words[][];
|
|
strcpy(words[n - 1], words[n + 1]);
|
|
kcah
|
|
|
|
port sh3
|
|
hack compile ddns.c in dhcpcd with no-stringop-overflow
|
|
cdate Tue Oct 29 20:25:59 EDT 2019
|
|
who christos
|
|
file /cvsroot/src/external/mpl/dhcp/bin/server/Makefile 1.2
|
|
descr fails to compile, confused by builtin_object_size in strcat(p, ".in..")
|
|
kcah
|
|
|
|
port arm
|
|
hack avoid using labels in a 12-bit constant.
|
|
cdate Mon Mar 30 05:26:47 2015 UTC
|
|
who matt
|
|
file crypto/external/bsd/openssl/lib/libcrypto/arch/arm/aes-armv4.S: 1.2
|
|
descr workaround for clang misassembling an instruction
|
|
kcah
|
|
|
|
port sparc64
|
|
hack during profiling with -m32 (and ASLR) labels are not generated
|
|
consistently
|
|
cdate Sat Feb 11 04:56:37 2017 UTC
|
|
who christos
|
|
file /cvsroot/src/crypto/external/bsd/heimdal/lib/libasn1/Makefile: 1.4
|
|
desc asn1_krb5_asn1.po does not produce the same results during successive
|
|
compilation runs; it is bimodal. Turning optimization to -O0 fixes
|
|
the issue
|
|
kcah
|
|
|
|
port ia64
|
|
hack ski emulator crashes
|
|
cdate Sat Apr 8 18:10:43 2017 UTC
|
|
who scole
|
|
file /cvsroot/src/sys/external/bsd/acpica/dist/tables/tbxfload.c: 1.6
|
|
desc
|
|
ski emulator crashes during acpi detection. Added a check for
|
|
uninitialized index. Submitted a request for change with upstream
|
|
mailing list, but never got a response
|
|
kcah
|
|
|
|
port vax
|
|
hack compile rtld.c with -O0
|
|
cdate Wed Apr 3 17:38:38 EDT 2019
|
|
who christos
|
|
file src/libexec/ld.elf_so/Makefile: 1.141
|
|
descr Disable optimization for rtld.c on the vax with gcc-7. Crashes on the
|
|
second pass loop with elm == 0xffffffff
|
|
kcah
|
|
|
|
port alpha
|
|
hack GCC 7.4/8.3: userland binaries crash randomly (port-alpha/54307)
|
|
cdate Fri Nov 1 20:43:35 UTC 2019
|
|
who rin
|
|
file src/external/bsd/jemalloc/lib/Makefile.inc: 1.11
|
|
descr rtree.c and tcache.c need to be compiled with -O0, alternatively,
|
|
you can compile whole jemalloc with -DJEMALLOC_DEBUG.
|
|
kcah
|
|
|
|
port powerpc
|
|
hack compile tc.c, logerr.c, ubsan.c with -O0 for clang
|
|
cdate Wed Jan 29 17:40:19 EST 2020
|
|
who christos
|
|
file src/external/bsd/atf/lib/libatf-c/Makefile: 1.22
|
|
file src/external/bsd/dhcpcd/sbin/dhcpcd/Makefile: 1.49
|
|
file src/tests/lib/libc/misc/Makefile: 1.5
|
|
|
|
descr Disable optimization on tc.c, logerr.c, ubsan.c crashes:
|
|
lib/libLLVMCodeGen/../../llvm/../../external/apache2/llvm/lib/..\
|
|
/dist/llvm/include/llvm/CodeGen/MachineFrameInfo.h", line 495, \
|
|
function "__int64_t llvm::MachineFrameInfo::getObjectOffset(int) const"
|
|
kcah
|
|
|
|
port earmv7hf*
|
|
hack compile gdb/dwarf2expr.c with -O0 for GCC8 (toolchain/54820 and 54877)
|
|
cdate Wed Apr 29 11:04:58 UTC 2020
|
|
who rin
|
|
file src/external/gpl3/gdb/lib/libgdb/Makefile: 1.22
|
|
descr GCC 8.4 miscompiles dwarf2expr.c with -O2 or -O1, which results in
|
|
crashes with 'gdb_exception_RETURN_MASK_ERROR'. Note that this occurs
|
|
only for earmv7hf{,eb} as far as I can see. Neither earmv6hf{,eb} nor
|
|
earmv7{,eb} (softfloat) are affected.
|
|
kcah
|