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On Wed, Nov 21, 2001 at 01:31:39PM +0100, Jakub Jelinek wrote: > > > But what I'm worried more is the GCC_3.0 vs. GLIBC_2.2.5 thing which > > > basically render this glibc change useless. > > > > Show me examples. Code. > > E.g. try the attached testcase (replace the compilers so that one is gcc 3.1 > and one is gcc-2.96 (or 2.95, doesn't matter) and the third one can be equal > to one of the two). > Dies miserably when glibc has those symbols @ GLIBC_2.2.5, while works > flawlessly if they are @ GCC_3.0. Maybe I should be more precise on what tests exactly fails. I have modified makefile so that instead of || exit it does || echo ABORTED. It failed the following tests, ie. - C program compiled with gcc 3.1 dlopening 2.96-RH C++ lib throwing exceptions (as it dies on the first throw, it doesn't matter if it later throws through dlopened C lib compiled with 2.96-RH or gcc 3.1) - Mark's __frame_state_for tester compiled with gcc 3.1 - C program compiled with gcc 2.96-RH dlopening 2.96-RH C++ lib throwing exceptions - main C++ program compiled with gcc 2.96-RH dlopening 2.96-RH C++ lib The rest of the tests passed. The reason why those tests abort is what I described previously, .eh_frame sections get registered in one registry (glibc) while when _Unwind_Find_FDE is used, it looks into a different registry (libgcc_s). This is due to libgcc_s relevant symbols being GCC_3.0 and their glibc counterparts being GLIBC_2.2.5. ./t31.tst ./t12.so ./t21.so Catching A within C++ DSO... ABORTED ./t31.tst ./t12.so ./t22.so Catching A within C++ DSO... ABORTED ./t31.tst ./t12.so ./t23.so Catching A within C++ DSO... ABORTED ./t31.tst ./t13.so ./t21.so Catching A within C++ DSO... ABORTED ./t31.tst ./t13.so ./t22.so Catching A within C++ DSO... ABORTED ./t31.tst ./t13.so ./t23.so Catching A within C++ DSO... ABORTED Cannot find frame info for tsearch Cannot find frame info for lfind Cannot find frame info for lsearch Cannot find frame info for bsearch Cannot find frame info for qsort tsearch lfind lsearch bsearch qsort ABORTED ./t42.tst ./t21.so Catching A within C++ DSO... ABORTED ./t32.tst ./t12.so ./t21.so Catching A within C++ DSO... ABORTED ./t32.tst ./t12.so ./t22.so Catching A within C++ DSO... ABORTED ./t32.tst ./t12.so ./t23.so Catching A within C++ DSO... ABORTED ./t42.tst ./t22.so Catching A within C++ DSO... ABORTED ./t32.tst ./t13.so ./t21.so Catching A within C++ DSO... ABORTED ./t32.tst ./t13.so ./t22.so Catching A within C++ DSO... ABORTED ./t32.tst ./t13.so ./t23.so Catching A within C++ DSO... ABORTED ./t42.tst ./t23.so Catching A within C++ DSO... ABORTED Cannot find frame info for tsearch Cannot find frame info for lfind Cannot find frame info for lsearch Cannot find frame info for bsearch Cannot find frame info for qsort tsearch lfind lsearch bsearch qsort ABORTED ./t43.tst ./t21.so Catching A within C++ DSO... ABORTED ./t33.tst ./t12.so ./t21.so Catching A within C++ DSO... ABORTED ./t33.tst ./t12.so ./t22.so Catching A within C++ DSO... ABORTED ./t33.tst ./t12.so ./t23.so Catching A within C++ DSO... ABORTED ./t43.tst ./t22.so Catching A within C++ DSO... ABORTED ./t33.tst ./t13.so ./t21.so Catching A within C++ DSO... ABORTED ./t33.tst ./t13.so ./t22.so Catching A within C++ DSO... ABORTED ./t33.tst ./t13.so ./t23.so Catching A within C++ DSO... ABORTED ./t43.tst ./t23.so Catching A within C++ DSO... ABORTED Cannot find frame info for tsearch Cannot find frame info for lfind Cannot find frame info for lsearch Cannot find frame info for bsearch Cannot find frame info for qsort tsearch lfind lsearch bsearch qsort ABORTED Jakub
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