[LLVMbugs] [Bug 10624] New: llvm-objdump crashes when given bogus file

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Tue Aug 9 15:48:19 PDT 2011


           Summary: llvm-objdump crashes when given bogus file
           Product: new-bugs
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: matt at pharr.org
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=7041)
 --> (http://llvm.org/bugs/attachment.cgi?id=7041)
one byte test case

If one inadvertently gives llvm-objdump a file with raw instructions (i.e. not
an object file after all), like the attached, one sees this crash.  

(Not a high priority bug, but filing it in any case.)

% llvm-objdump xx.o -disassemble  
0  llvm-objdump      0x000000010092e982
1  llvm-objdump      0x000000010092ef89
2  libsystem_c.dylib 0x00007fff86a09cfa _sigtramp + 26
3  libsystem_c.dylib 0x00007fff603f9120 _sigtramp + 18446744073065657408
4  llvm-objdump      0x00000001007c7140
5  llvm-objdump      0x00000001007c49e4
Stack dump:
0.    Program arguments: llvm-objdump xx.o -disassemble 
[1]    38577 segmentation fault  llvm-objdump xx.o -disassemble
% od -x xx.o 
0000000      00c3                                                        

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