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Issue #24489: ensure a previously set C errno doesn't disturb cmath.polar().

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This commit is contained in:
Antoine Pitrou 2015-06-23 14:38:13 +02:00
commit a72f0cdaea
4 changed files with 58 additions and 11 deletions
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3
Modules/cmathmodule.c
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@ -986,9 +986,10 @@ cmath_polar_impl(PyModuleDef *module, Py_complex z)
{
double r, phi;
errno = 0;
PyFPE_START_PROTECT("polar function", return 0)
phi = c_atan2(z); /* should not cause any exception */
r = _Py_c_abs(z); /* sets errno to ERANGE on overflow; otherwise 0 */
r = _Py_c_abs(z); /* sets errno to ERANGE on overflow */
PyFPE_END_PROTECT(r)
if (errno != 0)
return math_error();