Martin Panter added the comment:
Okay, so to be clear, I am assuming XLC supports all of the following fields,
and uses unsigned bit fields by default:
struct UNSIGNED_BITS {
unsigned int AU: 1;
int A: 1; /* Equivalent to unsigned int */
signed int AS: 1;
unsigned short MU: 1;
short M: 1; /* Equivalent to unsigned short; triggers warning */
};
and that it cannot compile the following:
struct SIGNED_BITS {
signed short MS: 1; /* Not supported */
};
Attached is what I think a patch to resolve this would look like. However it
needs a line in Modules/_ctypes/_ctypes_test.c completed to detect the compiler:
#ifndef /* Something to identify XLC */
Can you figure out a way to test for XLC (but not GCC, which the AIX buildbot
uses), and then try my patch out? Hopefully you see no more compiler warnings,
test_ints() should now pass, and test_shorts() should be skipped.
----------
keywords: +patch
Added file: http://bugs.python.org/file44005/disable-signed-short.patch
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