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