[Numpy-discussion] Heads up on gcc-4.2 and -fstrict-overflow

[Charles R Harris]

Hi All,

The newest released version of gcc implements the flag -fstrict-overflow,
which is on by default. In C this means that signed integers are assumed to
not overflow, as by the strict C standard only unsigned integers use modular
arithmetic and wrap. This may affect numpy because currently signed integers
wrap and don't raise a flag on overflow. We may need to unset this flag to
maintain current behaviour.

Chuck
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