[Bug middle-end/61112] Simple example triggers false-positive -Wmaybe-uninitialized warning

[patrick at parcs dot ath.cx]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61112

--- Comment #1 from patrick at parcs dot ath.cx ---
$ gcc -O2 -Wall this.c
this.c: In function ‘void foo(int, int, int)’:
this.c:13:10: warning: ‘w’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
     p = w;