[Bug 1089722] Re: wcslen reads beyond the end of the buffer

[Phillip Susi]

I suspected it may be a false positive in valgrind from such an
optimization in eglibc, but looking at the uncommented glibc source, I
can not tell if it actually is safe and won't cross a page boundary.  If
it can't cross a page boundary, then yes, valgrind should be configured
to ignore it, but if it can, then it certainly is a bug.

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https://bugs.launchpad.net/bugs/1089722

Title:
  wcslen reads beyond the end of the buffer

Status in “eglibc” package in Ubuntu:
  Incomplete

Bug description:
  valgrind reports many errors of wcslen reading beyond the end of the
  buffer.  It appears that sysdeps/x86_64/wcslen.S tries do do 64 bit
  reads which can result in reading beyond the end of the buffer if
  there are less than 64 bits left.

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