From 47580f79b48d82e42c8c7b44fc49ea8de9f74fcf Mon Sep 17 00:00:00 2001
From: Ken Thompson <ken@golang.org>
Date: Thu, 11 Sep 2008 19:09:25 -0700
Subject: [PATCH] bug075

R=r
OCL=15192
CL=15192
---
 src/cmd/gc/walk.c | 1 +
 src/runtime/map.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/src/cmd/gc/walk.c b/src/cmd/gc/walk.c
index 8850867db7..e5fdb540fc 100644
--- a/src/cmd/gc/walk.c
+++ b/src/cmd/gc/walk.c
@@ -406,6 +406,7 @@ loop:
 		case OINDEXPTR:
 			if(cl == 2 && cr == 1) {
 				// a,b = map[] - mapaccess2
+				walktype(r->left, Erv);
 				if(!isptrto(r->left->type, TMAP))
 					break;
 				l = mapop(n, top);
diff --git a/src/runtime/map.c b/src/runtime/map.c
index 5500c9f91b..0a4b3b8e84 100644
--- a/src/runtime/map.c
+++ b/src/runtime/map.c
@@ -114,6 +114,7 @@ sys·mapaccess1(Hmap *m, ...)
 	}
 
 	m->valalg->copy(m->valsize, av, 0);
+	throw("sys·mapaccess1: key not in map");
 
 out:
 	if(debug) {
-- 
2.48.1