From 7fa52f84c7c5479b75c5a1e168a2edaf7072f9de Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Mon, 16 Dec 1991 15:43:14 +0000
Subject: [PATCH] Explicitly check for weird values after calling pow().

---
 Objects/floatobject.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Objects/floatobject.c b/Objects/floatobject.c
index 77015b9032e..43cefda562c 100644
--- a/Objects/floatobject.c
+++ b/Objects/floatobject.c
@@ -37,6 +37,14 @@ extern int errno;
 #include <ctype.h>
 #include <math.h>
 
+#ifdef HUGE_VAL
+#define CHECK(x) if (errno != 0) ; \
+	else if (-HUGE_VAL <= (x) && (x) <= HUGE_VAL) ; \
+	else errno = ERANGE
+#else
+#define CHECK(x) /* Don't know how to check */
+#endif
+
 #ifndef THINK_C
 extern double fmod PROTO((double, double));
 extern double pow PROTO((double, double));
@@ -262,6 +270,7 @@ float_pow(v, w)
 	}
 	errno = 0;
 	ix = pow(iv, iw);
+	CHECK(ix);
 	if (errno != 0) {
 		/* XXX could it be another type of error? */
 		err_errno(OverflowError);