Mac OS X 10.5 needs an autoreleasepool here to avoid memory leaks. Newer versions of Mac OS X do not, but it doesn't hurt to have one anyway.

mdehoon · mdehoon · commit 3c444b895cc7 · 2012-12-11T13:53:52.000+09:00
diff --git a/src/_macosx.m b/src/_macosx.m
@@ -5693,12 +5693,14 @@ - (int)index
     if(nwin > 0)
     {
         [NSApp activateIgnoringOtherApps: YES];
+        NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
         NSArray *windowsArray = [NSApp windows];
         NSEnumerator *enumerator = [windowsArray objectEnumerator];
         NSWindow *window;
         while ((window = [enumerator nextObject])) {
             [window orderFront:nil];
         }
+        [pool release];
         [NSApp run];
     }
     Py_INCREF(Py_None);

Original file line number	Diff line number	Diff line change
`@@ -5693,12 +5693,14 @@ - (int)index`
`5693`	`5693`	`if(nwin > 0)`
`5694`	`5694`	`{`
`5695`	`5695`	`[NSApp activateIgnoringOtherApps: YES];`
	`5696`	`+ NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];`
`5696`	`5697`	`NSArray *windowsArray = [NSApp windows];`
`5697`	`5698`	`NSEnumerator *enumerator = [windowsArray objectEnumerator];`
`5698`	`5699`	`NSWindow *window;`
`5699`	`5700`	`while ((window = [enumerator nextObject])) {`
`5700`	`5701`	`[window orderFront:nil];`
`5701`	`5702`	`}`
	`5703`	`+ [pool release];`
`5702`	`5704`	`[NSApp run];`
`5703`	`5705`	`}`
`5704`	`5706`	`Py_INCREF(Py_None);`