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workaround for OpenBSD compiler bug w.r.t. handling of overflows.

This commit is contained in:
Anthony Baxter 2003-09-30 14:58:59 +00:00
parent 3a01b7d66e
commit 83dd43fde1
1 changed files with 10 additions and 1 deletions
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11
Include/pyport.h
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@ -257,8 +257,17 @@ extern "C" {
* in non-overflow cases. * in non-overflow cases.
* X is evaluated more than once. * X is evaluated more than once.
* Some platforms have better way to spell this, so expect some #ifdef'ery. * Some platforms have better way to spell this, so expect some #ifdef'ery.
*
* OpenBSD uses 'isinf()' because a compiler bug on that platform causes
* the longer macro version to be mis-compiled. This isn't optimal, and
* should be removed once a newer compiler is available on that platform.
* The system that had the failure was running OpenBSD 3.2 on Intel, with
* gcc 2.95.3.
*
* According to Tim's checkin, the FreeBSD systems use isinf() to work
* around a FPE bug on that platform.
*/ */
#ifdef __FreeBSD__ #if defined(__FreeBSD__) || defined(__OpenBSD__)
#define Py_OVERFLOWED(X) isinf(X) #define Py_OVERFLOWED(X) isinf(X)
#else #else
#define Py_OVERFLOWED(X) ((X) != 0.0 && (errno == ERANGE || \ #define Py_OVERFLOWED(X) ((X) != 0.0 && (errno == ERANGE || \