Nick Kralevich a44e9afdd1 FORTIFY_SOURCE: optimize
Don't do the fortify_source checks if we can determine, at
compile time, that the provided operation is safe.

This avoids silliness like calling fortify source on things like:

  size_t len = strlen("asdf");
  printf("%d\n", len);

and allows the compiler to optimize this code to:

  printf("%d\n", 4);

Defer to gcc's builtin functions instead of pointing our code
to the libc implementation.

Change-Id: I5e1dcb61946461c4afaaaa983e39f07c7a0df0ae
2013-01-17 15:41:33 -08:00
2013-01-17 15:41:33 -08:00
2013-01-04 16:32:54 -08:00
2013-01-17 15:41:33 -08:00
2010-03-08 18:04:02 -08:00
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