From d9b9e15d6bbdae625b3613bb0a704d269cc83098 Mon Sep 17 00:00:00 2001
From: aiju <devnull@localhost>
Date: Sat, 1 Dec 2018 11:39:49 +0000
Subject: kencc: turn "function args not checked" warning into "function not
 declared" error if appropriate

---
 sys/src/cmd/cc/com.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sys/src/cmd/cc/com.c b/sys/src/cmd/cc/com.c
index f67294510..9ac706acc 100644
--- a/sys/src/cmd/cc/com.c
+++ b/sys/src/cmd/cc/com.c
@@ -607,11 +607,14 @@ tcomo(Node *n, int f)
 		if(o | tcoma(l, r, l->type->down, 1))
 			goto bad;
 		n->type = l->type->link;
-		if(!debug['B'])
-			if(l->type->down == T || l->type->down->etype == TOLD) {
+		if(!debug['B']){
+			if(l->type->down == T)
+				diag(n, "function not declared: %F", l);
+			else if(l->type->down->etype == TOLD) {
 				nerrors--;
 				diag(n, "function args not checked: %F", l);
 			}
+		}
 		dpcheck(n);
 		break;
 
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