Guido van Rossum added the comment:
> if you can give me a sample testcase I can bug GCC developers, this
> doesn't look good from GCC side at all. Btw from my limited C knowledge
> marking variables would volatile would prevent optimizations of them.
The example would be something like
void foo(ssize_t x)
{
if (x >= 0) {
if (x+x < 0) printf("Overflow\n");
}
}
main()
{
foo(2147483647);
}
This should print "Overflow" but won't if the evil optimization
triggers. (However you may have to tweak the example program so the
compiler can't inline the argument to foo.)
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Tracker <[EMAIL PROTECTED]>
<http://bugs.python.org/issue1608>
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