Date: Sun, 21 Feb 2016 00:14:10 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 207325] projects/clang380-import for TARGET_ARCH=powerpc : c++ exceptions cause SEGV (9 line program) Message-ID: <bug-207325-8-bz8Qp5nQ4J@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-207325-8@https.bugs.freebsd.org/bugzilla/> References: <bug-207325-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D207325 --- Comment #1 from Mark Millard <markmi@dsl-only.net> --- (In reply to Mark Millard from comment #0) If for TARGET_ARCH=3Dpowerpc I try using lang/gcc5 at the compiler instead = of clang 3.8.0: # g++5 -I /usr/include/c++/v1/ -L /usr/lib/ -g -Wall -pedantic exception_test.cpp or # g++5 -g -Wall -pedantic exception_test.cpp or # g++49 -g -Wall -pedantic exception_test.cpp or # g++49 -I /usr/include/c++/v1/ -L /usr/lib/ -g -Wall -pedantic exception_test.cpp (Note the lack of -Wl,-rpath=3D/usr/local/lib/gcc5 or -Wl,-rpath=3D/usr/local/lib/gcc5 use.) Then for the ./a.out I get the same SEGV at the same place as with clang 3.= 8.0 as the compiler in use, despite g++5's/g++49's use of _Unwind_Resume_or_Ret= hrow being the caller of _Unwind_RaiseException: # ./a.out terminate called after throwing an instance of 'std::exception' Segmentation fault (core dumped) Picking one core's backtrace to display: Core was generated by `a.out'. Program terminated with signal SIGSEGV, Segmentation fault. #0 _Unwind_GetGR (context=3D0xffffce80, index=3D<optimized out>) at /usr/src/gnu/lib/libgcc/../../../contrib/gcc/unwind-dw2.c:177 177 return * (_Unwind_Ptr *) ptr; (gdb) bt #0 _Unwind_GetGR (context=3D0xffffce80, index=3D<optimized out>) at /usr/src/gnu/lib/libgcc/../../../contrib/gcc/unwind-dw2.c:177 #1 _Unwind_GetPtr (context=3D0xffffce80, index=3D<optimized out>) at /usr/src/gnu/lib/libgcc/../../../contrib/gcc/unwind-dw2.c:188 #2 uw_update_context (context=3D0xffffce80, fs=3D0xffffc9c0) at /usr/src/gnu/lib/libgcc/../../../contrib/gcc/unwind-dw2.c:1370 #3 _Unwind_RaiseException (exc=3D<optimized out>) at /usr/src/gnu/lib/libgcc/../../../contrib/gcc/unwind.inc:126 #4 0x41a25d8c in _Unwind_Resume_or_Rethrow (exc=3D<optimized out>) at /usr/src/gnu/lib/libgcc/../../../contrib/gcc/unwind.inc:256 Backtrace stopped: previous frame inner to this frame (corrupt stack?) The following do not fail: # g++49 -Wl,-rpath=3D/usr/local/lib/gcc49 -g -Wall -pedantic exception_test= .cpp # ./a.out # g++5 -Wl,-rpath=3D/usr/local/lib/gcc5 -g -Wall -pedantic exception_test.c= pp # ./a.out # --=20 You are receiving this mail because: You are the assignee for the bug.=
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