From 02191135a0ed33848e004696f0c5a67a997fec61 Mon Sep 17 00:00:00 2001
From: ISSOtm <eldredhabert0@gmail.com>
Date: Sat, 31 Aug 2019 03:00:26 +0200
Subject: [PATCH] Fix possible unterminated string sym_SetMacroArgID used a
 `sprintf` that could write no \0. In practice this was benign because %u
 cannot print 256 chars, but better future-proof this.

---
 src/asm/symbol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/asm/symbol.c b/src/asm/symbol.c
index 50e9f180..ab3b24ad 100644
--- a/src/asm/symbol.c
+++ b/src/asm/symbol.c
@@ -440,7 +440,7 @@ void sym_SetMacroArgID(uint32_t nMacroCount)
 {
 	char s[256];
 
-	snprintf(s, sizeof(s), "_%u", nMacroCount);
+	snprintf(s, sizeof(s) - 1, "_%u", nMacroCount);
 	newmacroargs[MAXMACROARGS] = strdup(s);
 }