[Tinycc-devel] macro expansion bug
Hi, With tcc I get: $ cat cat.c #define CAT2(a,b) a##b #define CAT(a,b) CAT2(a,b) #define AB(x) CAT(x,y) CAT(A,B)(x) $ ./tcc -E cat.c # 2 cat.c CAT(x,y) But I think this is wrong, because gcc -E and clang -E both expand the last line further to give just: xy The test case is massively reduced from some real code! Jay. ___ Tinycc-devel mailing list Tinycc-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/tinycc-devel
Re: [Tinycc-devel] macro expansion bug
On 2014-04-02 14:46:36 +0100, Jay Foad wrote: With tcc I get: $ cat cat.c #define CAT2(a,b) a##b #define CAT(a,b) CAT2(a,b) #define AB(x) CAT(x,y) CAT(A,B)(x) $ ./tcc -E cat.c # 2 cat.c CAT(x,y) But I think this is wrong, because gcc -E and clang -E both expand the last line further to give just: xy For future testcases, this means that this wouldn't be equivalent to: #define CAT2(a,b) a##b(x) #define CAT(a,b) CAT2(a,b) #define AB(x) CAT(x,y) CAT(A,B) and #define CAT2(a,b) a##b #define CAT(a,b) CAT2(a,b)(x) #define AB(x) CAT(x,y) CAT(A,B) which both give: CAT(x,y) for the last line. FYI, icc (ICC) 13.1.0 20130121 behaves like gcc. -- Vincent Lefèvre vinc...@vinc17.net - Web: https://www.vinc17.net/ 100% accessible validated (X)HTML - Blog: https://www.vinc17.net/blog/ Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon) ___ Tinycc-devel mailing list Tinycc-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/tinycc-devel
Re: [Tinycc-devel] macro expansion bug
I can confirm that during my experiments I tried to pre-compile some macro hell and tcc failed to do it correctly. These macros are similar to boost macros. This makes me guessing that boost macros would also fail (I assume there are no C++ dependencies in there). If there is intention to fix the precompiler, I could also give more input, with other words could investigate again what was failing. ___ Tinycc-devel mailing list Tinycc-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/tinycc-devel
Re: [Tinycc-devel] x86_64: shared libs
Hi, On Mon, 31 Mar 2014, Aharon Robbins wrote: Testing appreciated (hi Arnold :) ). This has certainly improved things; two tests that used to fail now pass, although two more continue to fail. If you want to test yourself, here's the recipe: git clone git://git.savannah.gnu.org/gawk.git cd gawk git checkout gawk-4.1-stable ./bootstrap.sh # due after clone or pull ./configure CC=tcc make make -k check # filefuncs and functab4 tests should fail This is really great progress, thanks! Thanks for the report. The cause is that libtcc1.a needs to contain position independend code as well (so that it may be linked into shared libraries). I've simply added -fPIC for compiling all components of it, which should be fine no matter if it's compiled by gcc or tcc. In any case the default config from tcc (mob branch as of ea2805f0) can now build gawk-4.1-stable without shared lib regressions (i.e. filefuncs and functab4 now work). I do see other tests fail as well: backbigs1, backsmalls1, mbfw1, mbprintf1 and mbprintf4; which seem to be locale dependend, but they work when compiling with gcc on my system. But seems unrelated to shared libs issues. Ciao, Michael. ___ Tinycc-devel mailing list Tinycc-devel@nongnu.org https://lists.nongnu.org/mailman/listinfo/tinycc-devel
