[issue1621] Do not assume signed integer overflow behavior
Guido van Rossum
report at bugs.python.org
Fri Jan 18 21:47:55 CET 2008
Guido van Rossum added the comment:
The proper thing to do here is to add
to the CFLAGS (*before* -Wall -- we should fix the position of -Wall!);
this will turn all those spots into errors, forcing us to fix them, and
alerting users who might be using a newer compiler than we tested with.
This should be done in favor of -fwrapv, but only if strict-overflow is
supported (which we can find out in the same way as we found out whether
-fwrapv is supported). I think in practice this means GCC 4.2 or newer.
Can someone come up with a patch?
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