31 lines
877 B
Diff
31 lines
877 B
Diff
From e709eb829448ce040087a3fc5481db6bfcaae212 Mon Sep 17 00:00:00 2001
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From: "Arnold D. Robbins" <arnold@skeeve.com>
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Date: Wed, 3 Aug 2022 13:00:54 +0300
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Subject: [PATCH] Smal bug fix in builtin.c.
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Reference:https://git.savannah.gnu.org/gitweb/?p=gawk.git;a=commitdiff;h=e709eb829448ce040087a3fc5481db6bfcaae212
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Conflict:delete changlog
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---
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builtin.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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diff --git a/builtin.c b/builtin.c
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index d7ba82c..3eee9b9 100644
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--- a/builtin.c
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+++ b/builtin.c
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@@ -963,7 +963,10 @@ check_pos:
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s1++;
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n0--;
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}
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- if (val >= num_args) {
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+ // val could be less than zero if someone provides a field width
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+ // so large that it causes integer overflow. Mainly fuzzers do this,
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+ // but let's try to be good anyway.
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+ if (val < 0 || val >= num_args) {
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toofew = true;
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break;
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}
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--
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2.27.0
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