[Bug middle-end/57856] for an uninitialized variable, gcc assumes it already has value instead of report uninitialized warnings.

[gang.chen at asianux dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57856

--- Comment #4 from Chen Gang <gang.chen at asianux dot com> ---
Created attachment 30480
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30480&action=edit
This attachment is for gcc 4.9.0 from compiling source code (sorry, the
original disassembly code is for red hat 4.7.2)