From 981fbfc16220a15e72457d8ece4e014988746946 Mon Sep 17 00:00:00 2001
From: Karl Williamson <khw@cpan.org>
Date: Thu, 12 Mar 2020 12:48:47 -0600
Subject: reentr.c: Prevent infinite looping

This is an easy, though  paranoid hedge to prevent something that should
never happen from causing an infinite loop if it were to happen.
---
 reentr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'reentr.c')

diff --git a/reentr.c b/reentr.c
index 8438c8f90f..2429aa2f5d 100644
--- a/reentr.c
+++ b/reentr.c
@@ -36,7 +36,7 @@
 
 #define RenewDouble(data_pointer, size_pointer, type) \
     STMT_START { \
-	const size_t size = *(size_pointer) * 2; \
+	const size_t size = MAX(*(size_pointer), 1) * 2; \
 	Renew((data_pointer), (size), type); \
 	*(size_pointer) = size; \
     } STMT_END
-- 
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