From 209d1aede1d28f2cdbcd3d3fe1f00a7d8cac2a39 Mon Sep 17 00:00:00 2001
From: Karl Williamson <khw@cpan.org>
Date: Mon, 12 May 2025 15:12:37 -0600
Subject: [PATCH] Configure: make sure pointers fit in IVs

See #18995

This commit just adds a simple test that IV is large enough to hold a
pointer; something we claim is true, but didn't actually guarantee.
---
 Configure | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Configure b/Configure
index 7868560295fb..44c12ced4014 100755
--- a/Configure
+++ b/Configure
@@ -16755,6 +16755,11 @@ define:define:?*)
 	;;
 esac
 
+if test $ivsize -lt $ptrsize; then
+    echo "Re-run Configure adding -Duse64bitint so as to make integers as large as pointer values" >&4
+    exit 1
+fi
+
 case "$uselongdouble:$d_longdbl" in
 define:define)
 	nvtype="long double"