From fd068221b7fbbcfe89ec74c7eeb0138e90e14b13 Mon Sep 17 00:00:00 2001
From: Peter Stephenson <p.stephenson@samsung.com>
Date: Wed, 18 Dec 2019 10:51:59 +0000
Subject: 45083: Add signal protection to execarith().

Otherwise we could get re-entrancy in memory functions when
setting variables.
---
 Src/exec.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'Src')

diff --git a/Src/exec.c b/Src/exec.c
index 50027654a..fac095d64 100644
--- a/Src/exec.c
+++ b/Src/exec.c
@@ -5101,6 +5101,7 @@ execarith(Estate state, UNUSED(int do_exec))
     mnumber val = zero_mnumber;
     int htok = 0;
 
+    queue_signals();
     if (isset(XTRACE)) {
 	printprompt4();
 	fprintf(xtrerr, "((");
@@ -5120,6 +5121,8 @@ execarith(Estate state, UNUSED(int do_exec))
 	fprintf(xtrerr, " ))\n");
 	fflush(xtrerr);
     }
+    unqueue_signals();
+
     if (errflag) {
 	errflag &= ~ERRFLAG_ERROR;
 	return 2;
-- 
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