F21 system GCC changed to 4.9.0 prerelease

Richard W.M. Jones rjones at redhat.com
Thu Apr 10 14:38:21 UTC 2014

On Thu, Apr 10, 2014 at 12:23:07PM +0200, Jakub Jelinek wrote:
> To investigate runtime rather than compile time
> issues, please consider using temporarily -fsanitize=undefined and/or
> -fsanitize=address to look for undefined behavior in the packages
> you own.

Which is this in case anyone else was wondering:

     Enable AddressSanitizer, a fast memory error detector.  Memory
     access instructions will be instrumented to detect out-of-bounds
     and use-after-free bugs.  See
     <http://code.google.com/p/address-sanitizer/> for more details.
     The run-time behavior can be influenced using the 'ASAN_OPTIONS'
     environment variable; see
     for a list of supported options.


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