From: Irit Katriel <1055913+iritkatriel@users.noreply.github.com>
Date: Thu, 30 Jun 2022 14:30:12 +0000 (+0100)
Subject: gh-94332: make it safe to call assemble_free when assemble_init has not been called... 
X-Git-Tag: v3.11.0b4~57
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=48a739ec106dffabe89d67e79736c7dcf2f8f4a6;p=thirdparty%2FPython%2Fcpython.git

gh-94332: make it safe to call assemble_free when assemble_init has not been called (GH-94389) (GH-94442)

(cherry picked from commit be82d26570343dafc8a89be5a1a0e2f58d51a904)
---

diff --git a/Python/compile.c b/Python/compile.c
index 6d800b21c162..70a754b16d88 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -8299,6 +8299,7 @@ assemble(struct compiler *c, int addNone)
     int j, nblocks;
     PyCodeObject *co = NULL;
     PyObject *consts = NULL;
+    memset(&a, 0, sizeof(struct assembler));
 
     /* Make sure every block that falls off the end returns None. */
     if (!c->u->u_curblock->b_return) {