http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39633
Georg-Johann Lay <avr at gjlay dot de> changed:
What |Removed |Added
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CC| |avr at gjlay dot de
--- Comment #5 from Georg-Johann Lay <avr at gjlay dot de> 2011-04-14 19:54:40
UTC ---
Did you try this with -fno-strict-overflow?
Code like
(INT8_MIN)-((int8_t)(si2))
might lead to signed overflow, and if gcc gets knowledge of si2 being strictly
positive, the results is undefined.
http://gcc.gnu.org/onlinedocs/gcc-4.3.5/gcc/Optimize-Options.html#Optimize-Options
