Don't die in resizestring() on filter(<func>, "").

gvanrossum · gvanrossum · commit 79d96d6bffa2 · 1996-08-16T20:44:34.000Z
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
@@ -1735,7 +1735,7 @@ filterstring(func, strobj)
 				GETSTRINGVALUE((stringobject *)item)[0];
 	}
 
-	if (resizestring(&result, j) < 0)
+	if (j < len && resizestring(&result, j) < 0)
 		return NULL;
 
 	return result;

Original file line number	Diff line number	Diff line change
`@@ -1735,7 +1735,7 @@ filterstring(func, strobj)`
`1735`	`1735`	`GETSTRINGVALUE((stringobject *)item)[0];`
`1736`	`1736`	`}`
`1737`	`1737`
`1738`		`- if (resizestring(&result, j) < 0)`
	`1738`	`+ if (j < len && resizestring(&result, j) < 0)`
`1739`	`1739`	`return NULL;`
`1740`	`1740`
`1741`	`1741`	`return result;`