[Bug middle-end/56098] [4.6/4.7 Regression] conditional write through volatile pointer produces unintended read

[werner at almesberger dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56098

--- Comment #7 from werner at almesberger dot net 2013-01-26 02:09:33 UTC ---
I'm happy to confirm that trunk (for x86-64) now passes all variations of this
theme I tried with flying colors. Thanks again !