From 4bcbfc3473302a85e720cb6b12e654a37e9c7b90 Mon Sep 17 00:00:00 2001
From: Bill Currie <bill@taniwha.org>
Date: Mon, 11 Sep 2023 00:32:01 +0900
Subject: [PATCH] [qfcc] Fix an uninitialized test

When the function is empty, not even a stack adjust instruction is
emitted, so checking for one wound up accessing uninitialized memory.
---
 tools/qfcc/source/function.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/qfcc/source/function.c b/tools/qfcc/source/function.c
index b02dc30c4..57de54a16 100644
--- a/tools/qfcc/source/function.c
+++ b/tools/qfcc/source/function.c
@@ -819,7 +819,7 @@ build_code_function (symbol_t *fsym, expr_t *state_expr, expr_t *statements)
 															   STACK_ALIGN);
 
 		dstatement_t *st = &pr.code->code[func->code];
-		if (st->op == OP_ADJSTK) {
+		if (pr.code->size > func->code && st->op == OP_ADJSTK) {
 			if (func->params_start) {
 				st->b = -func->params_start;
 			} else {