BR3392253: Fix potential buffer overflow in number conversion

Reported-by: franck.uberto@esrf.fr
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

diff --git a/preproc.c b/preproc.c
index 8984a52..e2b12e4 100644 (file)
--- a/preproc.c
+++ b/preproc.c
@@ -5206,7 +5206,7 @@ static void pp_extra_stdmac(macros_t *macros)
 
 static void make_tok_num(Token * tok, int64_t val)
 {
-    char numbuf[20];
+    char numbuf[32];
     snprintf(numbuf, sizeof(numbuf), "%"PRId64"", val);
     tok->text = nasm_strdup(numbuf);
     tok->type = TOK_NUMBER;