[Bug middle-end/50569] Wrong code error: memcpy eliminated when it is needed

[pkoning at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50569

--- Comment #3 from Paul Koning <pkoning at gcc dot gnu.org> 2011-09-29 19:52:47 UTC ---
Created attachment 25383
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25383
Test case with main()

Here is an updated testcase.  This one runs to completion with 4.5.1, aborts
with a bus error exception on 4.6.1.

I compiled with -mabi=n32 -O1, but as far as I can tell from inspecting the
generated code, the choice of ABI is not a factor.