commit 2d82ef9d98aeae7592e9e4036722468a1dc53acb
from: Gleydson Soares <gsoares@gmail.com>
via: Russ Cox <rsc@swtch.com>
date: Wed Nov 02 23:16:21 2016 UTC

fix segfaults on OpenBSD: int cannot hold all the values a ptrdiff_t can take.

Change-Id: I90806e6f2e46a94f38aa0a8a7038aa6599b448b3
Reviewed-on: https://plan9port-review.googlesource.com/2660
Reviewed-by: Russ Cox <rsc@swtch.com>

commit - 35d43924484b88b9816e40d2f6bff4547f3eec47
commit + 2d82ef9d98aeae7592e9e4036722468a1dc53acb
blob - 09678755e411a05732348468e03af0aa83313c69
blob + d9deb135ca533be86c67cce4bb590e0e1e8bbcad
--- src/libregexp/regcomp.c
+++ src/libregexp/regcomp.c
@@ -238,7 +238,7 @@ optimize(Reprog *pp)
 	int size;
 	Reprog *npp;
 	Reclass *cl;
-	int diff;
+	ptrdiff_t diff;
 
 	/*
 	 *  get rid of NOOP chains