https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111641
--- Comment #16 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-14 branch has been updated by Rainer Orth <r...@gcc.gnu.org>: https://gcc.gnu.org/g:d92b508dd19daffedfc0fb02e5bfa710f2c397b0 commit r14-10274-gd92b508dd19daffedfc0fb02e5bfa710f2c397b0 Author: Rainer Orth <r...@cebitec.uni-bielefeld.de> Date: Wed May 29 10:08:07 2024 +0200 libstdc++: Build libbacktrace and 19_diagnostics/stacktrace with -funwind-tables [PR111641] Several of the 19_diagnostics/stacktrace tests FAIL on Solaris/SPARC (32 and 64-bit), Solaris/x86 (32-bit only), and several other targets: FAIL: 19_diagnostics/stacktrace/current.cc -std=gnu++23 execution test FAIL: 19_diagnostics/stacktrace/current.cc -std=gnu++26 execution test FAIL: 19_diagnostics/stacktrace/entry.cc -std=gnu++23 execution test FAIL: 19_diagnostics/stacktrace/entry.cc -std=gnu++26 execution test FAIL: 19_diagnostics/stacktrace/output.cc -std=gnu++23 execution test FAIL: 19_diagnostics/stacktrace/output.cc -std=gnu++26 execution test FAIL: 19_diagnostics/stacktrace/stacktrace.cc -std=gnu++23 execution test FAIL: 19_diagnostics/stacktrace/stacktrace.cc -std=gnu++26 execution test As it turns out, both the copy of libbacktrace in libstdc++ and the testcases proper need to compiled with -funwind-tables, as is done for libbacktrace itself. This isn't an issue on Linux/x86_64 and Solaris/amd64 since 64-bit x86 always defaults to -funwind-tables. 32-bit x86 does, too, when -fomit-frame-pointer is enabled as on Linux/i686, but unlike Solaris/i386. So this patch always enables the option both for the libbacktrace copy and the testcases. Tested on i386-pc-solaris2.11, sparc-sun-solaris2.11, and x86_64-pc-linux-gnu. 2024-05-23 Rainer Orth <r...@cebitec.uni-bielefeld.de> libstdc++-v3: PR libstdc++/111641 * src/libbacktrace/Makefile.am (AM_CFLAGS): Add -funwind-tables. * src/libbacktrace/Makefile.in: Regenerate. * testsuite/19_diagnostics/stacktrace/current.cc (dg-options): Add -funwind-tables. * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise. * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise. * testsuite/19_diagnostics/stacktrace/output.cc: Likewise. * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise. (cherry picked from commit a99ebb88f8f25e76ebed5afc22e64fa77a2f0d3f)
