[Bug c/19058] setjmp: 4.0 fails to give 'clobbered' warning (regression from 3.4.1)

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-12-17 
16:18 -------
This is because sum is not used outside of the loop with optimization turned 
on.  We always use 0.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19058