[llvm-bugs] [Bug 50491] New: TEST 'MemorySanitizer-X86_64 :: fstat.cpp' FAILED

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=50491

            Bug ID: 50491
           Summary: TEST 'MemorySanitizer-X86_64 :: fstat.cpp' FAILED
           Product: new-bugs
           Version: 12.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: release blocker
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: nnelson at infowest.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org

Obtained this error on Ubuntu 21.04 12.0.1 rc1 release run.

FAIL: MemorySanitizer-X86_64 :: fstat.cpp (76302 of 87931)
******************** TEST 'MemorySanitizer-X86_64 :: fstat.cpp' FAILED
********************
Script:
--
: 'RUN: at line 1';     
/home/nnelson/Documents/llvm-project/llvm/utils/release/rc1/Phase3/Release+Asserts/llvmCore-12.0.1-rc1.obj/./bin/clang
 --driver-mode=g++ -fsanitize=memory -mno-omit-leaf-frame-pointer
-fno-omit-frame-pointer -fno-optimize-sibling-calls  -m64  -gline-tables-only
-O0
/home/nnelson/Documents/llvm-project/llvm/utils/release/rc1/llvm-project/compiler-rt/test/msan/fstat.cpp
-o
/home/nnelson/Documents/llvm-project/llvm/utils/release/rc1/Phase3/Release+Asserts/llvmCore-12.0.1-rc1.obj/projects/compiler-rt/test/msan/X86_64/Output/fstat.cpp.tmp
&& 
/home/nnelson/Documents/llvm-project/llvm/utils/release/rc1/Phase3/Release+Asserts/llvmCore-12.0.1-rc1.obj/projects/compiler-rt/test/msan/X86_64/Output/fstat.cpp.tmp
--
Exit Code: 1

Command Output (stderr):
--
==2490251==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x49b929 in main
/home/nnelson/Documents/llvm-project/llvm/utils/release/rc1/llvm-project/compiler-rt/test/msan/fstat.cpp:11:7
    #1 0x7f73b634f564 in __libc_start_main csu/../csu/libc-start.c:332:16
    #2 0x41d24d in _start
(/home/nnelson/Documents/llvm-project/llvm/utils/release/rc1/Phase3/Release+Asserts/llvmCore-12.0.1-rc1.obj/projects/compiler-rt/test/msan/X86_64/Output/fstat.cpp.tmp+0x41d24d)

SUMMARY: MemorySanitizer: use-of-uninitialized-value
/home/nnelson/Documents/llvm-project/llvm/utils/release/rc1/llvm-project/compiler-rt/test/msan/fstat.cpp:11:7
in main
Exiting

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