https://llvm.org/bugs/show_bug.cgi?id=30431
Bug ID: 30431 Summary: error in backend: assembler label L?xxx$parent_frame_offset can not be undefined (MSVC, SEH-related) Product: clang Version: trunk Hardware: PC OS: Windows NT Status: NEW Severity: normal Priority: P Component: -New Bugs Assignee: unassignedclangb...@nondot.org Reporter: reupenl...@forward.cat CC: llvm-bugs@lists.llvm.org Classification: Unclassified While compiling my source tree under LLVM-4.0.0-r281648-win64.exe and MSVC 2015, the following compilation error happens for debug builds: CL : fatal error : error in backend: assembler label 'L?query_cpu_feature_set@pfc@@YA_NI@Z$parent_frame_offset' can not be undefined [F:\foobar2000\columns_ui\pfc\pfc.vcxproj] This does not happen in release builds. This happens in previous versions of LLVM/Clang too. To reproduce, open a VS2015 x86 Native Tools command prompt and run: git clone --recursive https://github.com/reupen/columns_ui.git cd columns_ui msbuild /m /p:PlatformToolset=LLVM-vs2014 /p:Platform=Win32 /p:Configuration=Debug /t:Rebuild vc14\columns_ui-public.sln The problematic function is defined here: https://github.com/reupen/pfc/blob/07bdb04d9eef8a03fada2c3ee6f364039cb4a1b5/cpuid.cpp#L7 Removing the usage of SEH makes the problem go away. Release builds also work. -- You are receiving this mail because: You are on the CC list for the bug.
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