[Python-Dev] test_itertools fails for trunk on x86 OS X machine
jackdied at jackdied.com
Fri Sep 22 07:43:16 CEST 2006
On Thu, Sep 21, 2006 at 10:23:54PM -0700, Neal Norwitz wrote:
> On 9/21/06, Jack Diederich <jackdied at jackdied.com> wrote:
> > I should leave the tounge-in-cheek bombast to Tim and Frederik, especially
> > when dealing with what might be an OS & machine specific bug. The next
> > checkin and re-test will or won't highlight a failure and certainly someone
> > with a g4 will try it out before 2.5.1 goes out so we'll know if it was a
> > fluke soonish. The original error was mine, I typed "Size_t" instead of
> > "Ssize_t" and while my one-char patch might also be wrong (I hope not, I'm
> > red-faced enough as is) we should find out soon enough.
> It looks like %zd of a negative number is treated as an unsigned
> number on OS X, even though the man page says it should be signed.
> The z modifier, when applied to a d or i conversion, indicates that
> the argument is of a signed type equivalent in size to a size_t.
> The program below returns -123 on Linux and 4294967173 on OS X.
> #include <stdio.h>
> int main()
> char buffer;
> if(sprintf(buffer, "%zd", (size_t)-123) < 0)
> return 1;
> printf("%s\n", buffer);
> return 0;
Consider me blushing even harder for denying the power of the buildbot
(and against all evidence). Yikes, didn't any other tests trigger this?
sprat:~/src/python-head# find ./ -name '*.c' | xargs grep '%zd' | wc -l
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