From: Guido van Rossum <guido@python.org>
Date: Tue, 21 Jan 1997 21:18:36 +0000 (+0000)
Subject: Kill all local variables on function return.  This closes a gigantic
X-Git-Tag: v1.5a1~453
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=a4240132ec0d59b5798453b4b09aff1a2840c240;p=thirdparty%2FPython%2Fcpython.git

Kill all local variables on function return.  This closes a gigantic
leak of memory and file descriptors (thanks for Roj for reporting
that!).  Alas, the speed goes down by 5%. :-(
---

diff --git a/Python/ceval.c b/Python/ceval.c
index 651066cedad8..3d2375c7068f 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -1696,6 +1696,18 @@ eval_code2(co, globals, locals,
 			why = WHY_EXCEPTION;
 		}
 	}
+
+	/* Kill all local variables */
+
+	{
+		int i;
+		for (i = co->co_nlocals; --i >= 0; ++fastlocals) {
+			if (*fastlocals != NULL) {
+				DECREF(*fastlocals);
+				*fastlocals = NULL;
+			}
+		}
+	}
 	
 	/* Restore previous frame and release the current one */