[LLVMbugs] [Bug 17252] New: opt seg fault multiple files in the Linux Kernel x86

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=17252

            Bug ID: 17252
           Summary: opt seg fault multiple files in the Linux Kernel x86
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: marceloabsousa at gmail.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 11205
  --> http://llvm.org/bugs/attachment.cgi?id=11205&action=edit
Bytecode file

With:
LLVM (http://llvm.org/):
  LLVM version 3.4svn
  DEBUG build.
  Built Sep 14 2013 (21:22:42).
  Default target: x86_64-unknown-linux-gnu
  Host CPU: corei7-avx

clang version 3.4 (trunk 190758)
Target: x86_64-unknown-linux-gnu
Thread model: posix

Running the optimizer with instnamer and lowerswitch seg faults. This
particular seg fault error occurs in several (10+) files in the Linux Kernel
x86. I'm able to run llvm-dis on it for inspection. Here's the failure log
file. One of the .bc in question goes in attach.

0  opt             0x00000000018a5a15 llvm::sys::PrintStackTrace(_IO_FILE*) +
38
1  opt             0x00000000018a5c9c
2  opt             0x00000000018a56e0
3  libpthread.so.0 0x00002aaaab311030
4  opt             0x0000000000952a07
5  opt             0x00000000016c6c70
llvm::DebugInfoFinder::processType(llvm::DIType) + 110
6  opt             0x00000000016c6e14
llvm::DebugInfoFinder::processType(llvm::DIType) + 530
Stack dump:
0.      Program arguments: opt -instnamer -lowerswitch
Segmentation fault
make: *** [drivers/w1/masters/ds1wm.o.bc] Error 139

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