From: Denys Vlasenko <vda.linux@googlemail.com>
Date: Wed, 28 Nov 2018 11:16:29 +0000 (+0100)
Subject: awk: abort if NF set to negative value
X-Git-Tag: 1_30_0~349
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=75a1c87357070ec0229f1c98d887bc1c526bb81c;p=oweals%2Fbusybox.git

awk: abort if NF set to negative value

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
---

diff --git a/editors/awk.c b/editors/awk.c
index bafc9ba1d..af103e3cc 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -1849,6 +1849,8 @@ static void handle_special(var *v)
 
 	if (v == intvar[NF]) {
 		n = (int)getvar_i(v);
+		if (n < 0)
+			syntax_error("NF set to negative value");
 		fsrealloc(n);
 
 		/* recalculate $0 */