[LLVMbugs] [Bug 12885] New: wrongful segfault in generated code

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Fri May 18 21:53:48 PDT 2012


             Bug #: 12885
           Summary: wrongful segfault in generated code
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: regehr at cs.utah.edu
                CC: chenyang at cs.utah.edu, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

[regehr at dyson r52]$ clang -v
clang version 3.2 (trunk 157064)
Target: x86_64-unknown-linux-gnu
Thread model: posix
[regehr at dyson r52]$ clang -O0 small.c ; ./a.out 
[regehr at dyson r52]$ clang -O small.c ; ./a.out 
Segmentation fault
[regehr at dyson r52]$ cat small.c
struct S1
    int f0;
    int f2;
    int f3;
    int f6;
    char f8;
} a[1];
main ()
    struct S1 b[] = { 1, 1, 1, 1, 1, 1, 1 };
    b[0].f0 = 0;
    a[0] = b[1];
    return 0;

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