[LLVMbugs] [Bug 21579] New: Memory Sanitizer causes wide string test failures in libc++

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=21579

            Bug ID: 21579
           Summary: Memory Sanitizer causes wide string test failures in
                    libc++
           Product: compiler-rt
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: compiler-rt
          Assignee: unassignedbugs at nondot.org
          Reporter: eric at efcs.ca
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

When testing libc++ with MSAN tests involving wide strings start to fail
without MSAN producing any output. The assertions in these tests do not fail
when MSAN is disabled. 

The output of the test run can be found here:
http://lab.llvm.org:8011/builders/libcxx-libcxxabi-x86_64-linux-ubuntu-msan/builds/9/steps/test.libcxx/logs/stdio

libc++ is compiled with the sanitizer flags:
-fno-omit-frame-pointer -fsanitize=memory

Let me know if I can provide anything more.

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