https://bugs.llvm.org/show_bug.cgi?id=32770
Bug ID: 32770
Summary: CFI tests using ThinLTO on Windows all fail with
unsupported X86 relocation
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: Linker
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
This was found after Evgeniy's refactoring of the CFI tests in r301016.
The failing tests:
Failing Tests (4):
cfi-devirt-lld-thinlto :: simple-pass.cpp
cfi-devirt-thinlto :: simple-pass.cpp
cfi-standalone-lld-thinlto :: simple-pass.cpp
cfi-standalone-thinlto :: simple-pass.cpp
Example build:
http://lab.llvm.org:8011/builders/sanitizer-windows/builds/10028/
LLD crashes when attempting to emit a COFF object after ThinLTO optimization:
$ "C:/b/slave/sanitizer-windows/build/./bin/clang.exe" "-fuse-ld=lld"
"-Wl,-nopdb" "-flto=thin" "-fsanitize=cfi" "-fvisibility=hidden" "-o"
"C:\b\slave\sanitizer-windows\build\projects\compiler-rt\test\cfi\Standalone-thinlto\Output\simple-pass.cpp.tmp"
"C:\b\slave\sanitizer-windows\llvm\projects\compiler-rt\test\cfi\simple-pass.cpp"
# command stderr:
unsupported relocation type
UNREACHABLE executed at
C:\b\slave\sanitizer-windows\llvm\lib\Target\X86\MCTargetDesc\X86WinCOFFObjectWriter.cpp:92!
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