[Bug c/48968] incorrect warning about longjmp/vfork clobbering a local (-W -O2, x86-64)

[eggert at gnu dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48968

--- Comment #1 from eggert at gnu dot org 2011-05-11 19:35:32 UTC ---
Created attachment 24227
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24227
gzip-compressed u.i program, illustrating incorrect diagnostic