[Bug c/41882] gcc bug when comparing x to -x (linux, 32-bit)

[ebotcazou at gcc dot gnu dot org]

------- Comment #4 from ebotcazou at gcc dot gnu dot org  2009-10-31 09:38 -------
> Thanks for your quick response.  I would like to point out that on every 
> compiler and machine I've used, the behavior of signed overflow may not be 
> defined -- but it's always been consistent.

Consistency on undefined behavior is not mandated (it's a tautology) and would
have a substantial cost.  You can use -Wstrict-overflow to detect these cases.


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ebotcazou at gcc dot gnu dot org changed:

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41882