From 981fbfc16220a15e72457d8ece4e014988746946 Mon Sep 17 00:00:00 2001 From: Karl Williamson Date: Thu, 12 Mar 2020 12:48:47 -0600 Subject: [PATCH] reentr.c: Prevent infinite looping MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is an easy, though paranoid hedge to prevent something that should never happen from causing an infinite loop if it were to happen. Signed-off-by: Petr Písař --- reentr.c | 2 +- regen/reentr.pl | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) 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 diff --git a/regen/reentr.pl b/regen/reentr.pl index 94721e9dec..ba2e1c8fa6 100644 --- a/regen/reentr.pl +++ b/regen/reentr.pl @@ -818,7 +818,7 @@ print $c <<"EOF"; #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 -- 2.25.4