[PATCH] D102817: [Windows SEH]: HARDWARE EXCEPTION HANDLING (MSVC -EHa) - Part 2

Tue Apr 18 17:10:29 PDT 2023

hexhexd added a comment.

Hello,

I'm trying to move our code base from using ancient LLVM 11 to main branch LLVM. I experienced clang crashes with below messages while using an assert enabled LLVM build. The problem goes away if I remove `/EHa` from our cmake.

  A single unwind edge may only enter one EH pad
    invoke void @llvm.seh.scope.end()
            to label %"??1?$_Compressed_pair at V?$allocator at D@std@@V?$_String_val at U?$_Simple_types at D@std@@@2@$00 at std@@QEAA at XZ.exit6.i" unwind label %ehcleanup.i5.i, !dbg !4121
  in function ??1CrashdumpCollecter at debugging@skyfall@@QEAA at XZ
  fatal error: error in backend: Broken function found, compilation aborted!

The crash happened in

  #6 0x00007ff76757bf80 `anonymous namespace'::VerifierLegacyPass::runOnFunction C:\dev\llvm-project\llvm\lib\IR\Verifier.cpp:6532:0

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D102817/new/

https://reviews.llvm.org/D102817