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[libunwind][AIX] Fix the wrong traceback from signal handler #101069

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Merged
merged 2 commits into from
Jul 30, 2024
Merged

[libunwind][AIX] Fix the wrong traceback from signal handler #101069

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d9c14d4
Fix the problem introduced by upstream patch https://github.com/llvm/…
xingxue-ibm Jul 29, 2024
1d5e5ec
Fix REQUIRES for AIX.
xingxue-ibm Jul 29, 2024
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3 changes: 2 additions & 1 deletion libunwind/src/UnwindCursor.hpp
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Expand Up @@ -2589,7 +2589,8 @@ void UnwindCursor<A, R>::setInfoBasedOnIPRegister(bool isReturnAddress) {
--pc;
#endif

#if !(defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) && defined(_WIN32))
#if !(defined(_LIBUNWIND_SUPPORT_SEH_UNWIND) && defined(_WIN32)) && \
!defined(_LIBUNWIND_SUPPORT_TBTAB_UNWIND)
// In case of this is frame of signal handler, the IP saved in the signal
// handler points to first non-executed instruction, while FDE/CIE expects IP
// to be after the first non-executed instruction.
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2 changes: 1 addition & 1 deletion libunwind/test/aix_signal_unwind.pass.sh.S
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Expand Up @@ -10,7 +10,7 @@
// a correct traceback when the function raising the signal does not save
// the link register or does not store the stack back chain.

// REQUIRES: target=powerpc{{(64)?}}-ibm-aix
// REQUIRES: target=powerpc{{(64)?}}-ibm-aix{{.*}}

// Test when the function raising the signal does not save the link register
// RUN: %{cxx} -x c++ %s -o %t.exe -DCXX_CODE %{flags} %{compile_flags}
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