[LLVMbugs] [Bug 606] NEW: ReadBitfield() attempts to read bitfield beyond integer size

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.cs.uiuc.edu/bugs/show_bug.cgi?id=606

           Summary: ReadBitfield() attempts to read bitfield beyond integer
                    size
           Product: tools
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: llvm-gcc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: criswell at uiuc.edu


In the testcase that will be attached shortly, the ReadBitfield() function is
handed a bitfield reference that accesses a bitfield beyond the end of the integer.

In this specified case, the integer has a size of 16, and the bitfield begins at
bit 8 and has a size of 16.  This overextends the integer by about 8 bits.



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