[Bug sanitizer/78106] ASAN can't find heap-use-after-free with -O1

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78106

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Patch has been just sent:
https://gcc.gnu.org/ml/gcc-patches/2016-10/msg02010.html