gcc: avoid generating negative values to DW_AT_byte_size.
There is a bug in gcc (GCC/35998) where dwarf reports
sizes of unsigned -1 (0xffffffff).
On NetBSD this generated a faulty CTF entry which then
caused a segfault in ctfmerge. The issue was worked
around in NetBSD's Dtrace but since the issue originated
in gcc, it seems reasonable to fix it here.
Thanks to Christoph Mallon for pointing out a correct fix.
This should fix the bug described in CVE-2012-5667 when an input
line is so long that its length cannot be stored in an int
variable.
This change to NetBSD's version of GNU grep 2.5.1 (licenced under
GPLv2) was made without direct reference to any code licenced
under GPLv3.
Thanks to Ignatios Souvatzis for looking at GPLv3-derived
patches and describing the problem in general terms. Thanks to
pkgsrc/devel/coccinelle for helping me find places where int
variables were used to store the results from pointer arithmetic
or strlen(). Thanks to Martin Husemann for testing.
the TOOLDIR version of libnbcompat, associated include files,
and associated defs.mk file, instead of the version from the
.OBJDIR of src/tools/compat. This should fix PR 47188.
Use a UNSPEC for the internal ffs.
use (match_dup 1) since Z will be set if it is 0 just as if tst:SI was done.
This can let gcc produce better code if you code appropriately.
causes an end-less loop in ci(1) which uses "break" inside one of the
macros.
"/etc/security" will now no longer fill up "/" (or "/var" depending on
file-system layout).
PR toolchain/45576 at a very small run-time cost.
This was suggested by Richard Earnshaw.
A real fix is known to be in gcc 4.5.3 (as in NetBSD-current) and in
gcc-current; don't apply in that tree.
Where the original Makefile.in had this:
filename: dependencies
run autosomething to regenerate the file
we now do this:
filename: dependencies
@echo "NOT REBUILDING $@"
NetBSD_DISABLED_filename:
run autosomething to regenerate the file
targets, to ensure that the associated commands do not run. This should
prevent source files from being overwritten at build time by autoconf
and friends. Fixes PR 45132.
