[Bug binutils/17765] New: Bad bit shift operation

[sourceware-bugs at internot dot info]

https://sourceware.org/bugzilla/show_bug.cgi?id=17765

            Bug ID: 17765
           Summary: Bad bit shift operation
           Product: binutils
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: sourceware-bugs at internot dot info

Hi,

In /elflink.c, there is a possible invalid bitshift operation in the put_value
function.


In expression x >>= chunksz * 8UL, right shifting by more than 63 bits has
undefined behavior. The shift amount, chunksz * 8, is 64.
7806  for (; size; size -= chunksz, location -= chunksz, x >>= (chunksz * 8))
7807    {




Thanks,

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