mirror of
https://github.com/frida/tinycc
synced 2024-12-19 11:52:34 +03:00
f775d68725
Checked the lcc testsuite for bitfield stuff (in cq.c and fields.c), fixed one more error in initializing unnamed members (which have to be skipped), removed the TODO.
101 lines
3.6 KiB
Plaintext
101 lines
3.6 KiB
Plaintext
TODO list:
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Bugs:
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- i386 fastcall is mostly wrong
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- FPU st(0) is left unclean (kwisatz haderach). Incompatible with
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optimized gcc/msc code
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- see transparent union pb in /urs/include/sys/socket.h
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- precise behaviour of typeof with arrays ? (__put_user macro)
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but should suffice for most cases)
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- handle '? x, y : z' in unsized variable initialization (',' is
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considered incorrectly as separator in preparser)
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- transform functions to function pointers in function parameters
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(net/ipv4/ip_output.c)
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- fix function pointer type display
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- check section alignment in C
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- fix invalid cast in comparison 'if (v == (int8_t)v)'
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- finish varargs.h support (gcc 3.2 testsuite issue)
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- fix static functions declared inside block
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- fix multiple unions init
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- make libtcc fully reentrant (except for the compilation stage itself).
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- struct/union/enum definitions in nested scopes (see also Debian bug #770657)
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- __STDC_IEC_559__: float f(void) { static float x = 0.0 / 0.0; return x; }
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- memory may be leaked after errors (longjmp).
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Portability:
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- it is assumed that int is 32-bit and sizeof(int) == 4
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- int is used when host or target size_t would make more sense
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- TCC handles target floating-point (fp) values using the host's fp
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arithmetic, which is simple and fast but may lead to exceptions
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and inaccuracy and wrong representations when cross-compiling
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Linking:
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- static linking (-static) does not work
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Bound checking:
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- fix bound exit on RedHat 7.3
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- setjmp is not supported properly in bound checking.
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- fix bound check code with '&' on local variables (currently done
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only for local arrays).
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- bound checking and float/long long/struct copy code. bound
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checking and symbol + offset optimization
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Missing features:
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- disable-asm and disable-bcheck options
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- __builtin_expect()
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- atexit (Nigel Horne)
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- C99: add complex types (gcc 3.2 testsuite issue)
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- postfix compound literals (see 20010124-1.c)
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- interactive mode / integrated debugger
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Optimizations:
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- suppress specific anonymous symbol handling
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- more parse optimizations (=even faster compilation)
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- memory alloc optimizations (=even faster compilation)
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- optimize VT_LOCAL + const
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- better local variables handling (needed for other targets)
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Not critical:
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- C99: fix multiple compound literals inits in blocks (ISOC99
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normative example - only relevant when using gotos! -> must add
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boolean variable to tell if compound literal was already
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initialized).
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- add PowerPC generator and improve codegen for RISC (need
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to suppress VT_LOCAL and use a base register instead).
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- fix preprocessor symbol redefinition
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- add portable byte code generator and interpreter for other
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unsupported architectures.
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- C++: variable declaration in for, minimal 'class' support.
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- win32: __intxx. use resolve for bchecked malloc et al.
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check exception code (exception filter func).
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- handle void (__attribute__() *ptr)()
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- VLAs are implemented in a way that is not compatible with signals:
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http://lists.gnu.org/archive/html/tinycc-devel/2015-11/msg00018.html
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Fixed (probably):
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- bug with defines:
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#define spin_lock(lock) do { } while (0)
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#define wq_spin_lock spin_lock
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#define TEST() wq_spin_lock(a)
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- typedefs can be structure fields
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- see bugfixes.diff + improvement.diff from Daniel Glockner
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- long long constant evaluation
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- add alloca()
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- gcc '-E' option.
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- #include_next support for /usr/include/limits ?
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- function pointers/lvalues in ? : (linux kernel net/core/dev.c)
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- win32: add __stdcall, check GetModuleHandle for dlls.
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- macro substitution with nested definitions (ShangHongzhang)
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- with "-run" and libtcc, a PLT is now built.
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- '-E' option was improved
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- packed attribute is now supported
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- ARM and ARM64 code generators have been added.
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