test for float to the float power here

diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 551d009f459cc0b632e91d5c4051634ccb685122..83eeecbe806d2ee60dc2e34a425b12151ade9976 100644 (file)
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -916,6 +916,11 @@ do_pow(v, w)
                err_setstr(TypeError, "pow() requires numeric arguments");
                return NULL;
        }
+       if ((w->ob_type==&Floattype) &&
+           (*v->ob_type->tp_as_number->nb_negative)(v)) {
+               err_setstr(ValueError, "negative number to float power");
+               return NULL;
+       }
        if (coerce(&v, &w) != 0)
                return NULL;
        res = (*v->ob_type->tp_as_number->nb_power)(v, w, None);