[LLVMbugs] [Bug 16432] New: Bitcode file which crashes opt

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Mon Jun 24 15:37:56 PDT 2013


            Bug ID: 16432
           Summary: Bitcode file which crashes opt
           Product: tools
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: opt
          Assignee: unassignedbugs at nondot.org
          Reporter: alastair.donaldson at imperial.ac.uk
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 10751
  --> http://llvm.org/bugs/attachment.cgi?id=10751&action=edit
Test case exposing problem

I have compiled LLVM 3.3, checked out from:


and compiled with Visual Studio 10 in Debug mode, under Windows 7.

Running opt on the attached bitcode file causes opt to crash, printing the

0x01235862 (0x00000001 0x00D68C38 0x00D68F08 0x00C1FADC)
0x014D885C (0x00000000 0x00D68C38 0x00F18C98 0x0122CF3B)
0x0122CC11 (0x00000001 0x01A1D84C 0x00000001 0x00000000)
0x01128064 (0x00000002 0x00F11B20 0x00F12170 0xE69D83C3)
0x017AFF44 (0x7EFDE000 0x00C1FD34 0x779B9EF2 0x7EFDE000),
??0_Mutex at std@@QAE at W4_
Uninitialized at 1@@Z() + 0x2EE bytes(s)
0x774033AA (0x7EFDE000 0x761149A7 0x00000000 0x00000000), BaseThreadInitThunk()
+ 0x12 bytes(s)
0x779B9EF2 (0x017B0065 0x7EFDE000 0x00000000 0x00000000),
Chain() + 0x63 bytes(s)
0x779B9EC5 (0x017B0065 0x7EFDE000 0x00000000 0x00000000),
Chain() + 0x36 bytes(s)

Any advice on what's wrong here would be appreciated.

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