[llvm-dev] Broken LIT tests on Sanitizer Builds

[Ellis Hoag via llvm-dev]

I recently built with -DLLVM_USE_SANITIZER=Address, ran the LIT tests, and
noticed we have at least two tests with memory bugs on main. Here are the
commands I ran


$ cmake -GNinja -DLLVM_ENABLE_PROJECTS="clang;"
-DCMAKE_BUILD_TYPE=RelWithDebInfo -DLLVM_ENABLE_ASSERTIONS=On
-DBUILD_SHARED_LIBS=On -DLLVM_USE_SANITIZER=Address ../llvm
$ ninja check-llvm
...
==2157126==ERROR: AddressSanitizer: global-buffer-overflow on address
0x7fb9f778c55f at pc 0x7fba0487419d bp 0x7ffe92a0a230 sp 0x7ffe92a099d8
READ of size 1 at 0x7fb9f778c55f thread T0
    #0 0x7fba0487419c  (/lib64/libasan.so.5+0xad19c)
    #1 0x7fb9e7bcc439 in llvm::StringRef::strLen(char const*)
/home/ellishoag/local/repos/llvm-project/llvm/include/llvm/ADT/StringRef.h:86
    #2 0x7fb9e7bcc439 in llvm::StringRef::StringRef(char const*)
/home/ellishoag/local/repos/llvm-project/llvm/include/llvm/ADT/StringRef.h:108
    #3 0x7fb9e7bcc439 in getMnemonic
/home/ellishoag/local/repos/llvm-project/llvm/lib/MC/MCAsmStreamer.cpp:159
...
Failed Tests (2):
  LLVM :: CodeGen/AArch64/machine-outliner-remarks.ll
  LLVM :: CodeGen/X86/x86-shrink-wrapping.ll


I think check-clang also has some broken tests. Should we be running these
checks in https://lab.llvm.org/buildbot/ ? I'm not super familiar with this
site, but it seems that we have asan builds, but that we don't run
check-llvm or check-clang.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20211115/e896fed3/attachment.html>