[llvm-bugs] [Bug 46779] New: libomp.dll fails to link when using clang-cl to compile: kmp_ftn_cdecl.cpp.obj : fatal error LNK1143: invalid or corrupt file: no symbol for COMDAT section 0x4A

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=46779

            Bug ID: 46779
           Summary: libomp.dll fails to link when using clang-cl to
                    compile: kmp_ftn_cdecl.cpp.obj : fatal error LNK1143:
                    invalid or corrupt file: no symbol for COMDAT section
                    0x4A
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Windows 2000
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: hans at chromium.org
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org
            Blocks: 46725

(Using link.exe explicitly to avoid Bug 42837.)

>echo %CC%
\src\llvm.monorepo\build.release\bin\clang-cl.exe

>echo %CXX%
\src\llvm.monorepo\build.release\bin\clang-cl.exe

>cmake -GNinja -DCMAKE_LINKER=link.exe -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_ENABLE_PROJECTS="clang;lld;openmp" ..\llvm

>ninja libomp.dll

LINK: command
"C:\PROGRA~2\MIB055~1\2017\PROFES~1\VC\Tools\MSVC\1412~1.258\bin\Hostx64\x64\link.exe
/nologo projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_alloc.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_atomic.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_csupport.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_debug.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_itt.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_environment.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_error.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_global.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_i18n.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_io.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_runtime.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_settings.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_str.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_tasking.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_threadprivate.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_utility.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_barrier.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_wait_release.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_affinity.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_dispatch.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_lock.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_sched.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\z_Windows_NT_util.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\z_Windows_NT-586_util.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\thirdparty\ittnotify\ittnotify_static.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_taskdeps.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_cancel.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_ftn_cdecl.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_ftn_extra.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\kmp_version.cpp.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\z_Windows_NT-586_asm.asm.obj
projects\openmp\runtime\src\CMakeFiles\omp.dir\libomp.rc.res
/out:bin\libomp.dll /implib:lib\libomp.dll.lib /pdb:bin\libomp.dll.pdb /dll
/version:5.0 /machine:x64 /INCREMENTAL:NO
/DEF:C:/src/llvm.monorepo/build.foo/projects/openmp/runtime/src/libomp.def
kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib
oleaut32.lib uuid.lib comdlg32.lib advapi32.lib /MANIFEST
/MANIFESTFILE:bin\libomp.dll.manifest" failed (exit code 1143) with the
following output:
kmp_ftn_cdecl.cpp.obj : fatal error LNK1143: invalid or corrupt file: no symbol
for COMDAT section 0x4A
ninja: build stopped: subcommand failed.


Referenced Bugs:

https://bugs.llvm.org/show_bug.cgi?id=46725
[Bug 46725] [meta] 11.0.0 Release Blockers
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