From de15565cfcb75ee3dd3c4c996d9943df66698c6b Mon Sep 17 00:00:00 2001
From: Chris Hanson <org/chris-hanson/cph>
Date: Mon, 19 Dec 1994 22:27:11 +0000
Subject: [PATCH] Fix bug: must use signed character type when doing sign
 extension. IBM's OS/2 C compiler makes characters unsigned by default.

---
 v7/src/microcode/regex.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/v7/src/microcode/regex.c b/v7/src/microcode/regex.c
index a9c36c2e9..34c588db0 100644
--- a/v7/src/microcode/regex.c
+++ b/v7/src/microcode/regex.c
@@ -1,8 +1,8 @@
 /* -*-C-*-
 
-$Id: regex.c,v 1.14 1993/11/18 22:54:21 gjr Exp $
+$Id: regex.c,v 1.15 1994/12/19 22:27:11 cph Exp $
 
-Copyright (c) 1987-1993 Massachusetts Institute of Technology
+Copyright (c) 1987-94 Massachusetts Institute of Technology
 
 This material was developed by the Scheme project at the Massachusetts
 Institute of Technology, Department of Electrical Engineering and
@@ -108,11 +108,11 @@ extern void free ();
 
 #define READ_PATTERN_OFFSET(target) do					\
 {									\
-  char _fetched;							\
+  SIGNED char _fetched;							\
   if ((pattern_pc + 1) >= pattern_end)					\
     BAD_PATTERN ();							\
   (target) = (*pattern_pc++);						\
-  _fetched = (* ((char *) (pattern_pc++)));				\
+  _fetched = (* ((SIGNED char *) (pattern_pc++)));			\
   (target) += ((SIGN_EXTEND_CHAR (_fetched)) << ASCII_LENGTH);		\
   if (((pattern_pc + (target)) < pattern_start) ||			\
       ((pattern_pc + (target)) > pattern_end))				\
-- 
2.25.1