From 95864d35c68e9a3605fac8d1c459902150c18443 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Mon, 21 Dec 1998 18:35:49 +0000
Subject: [PATCH] Add dummy variable to avoid optimizer bug on OS/2 -- patch by
 Jeff Rush.

(AMK: you should probably copy this into your patch set for pcre.)
---
 Modules/pypcre.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Modules/pypcre.c b/Modules/pypcre.c
index 96baa89c03..9c6939fca1 100644
--- a/Modules/pypcre.c
+++ b/Modules/pypcre.c
@@ -256,6 +256,7 @@ static BOOL
 set_start_bits(const uschar *code, uschar *start_bits)
 {
 register int c;
+volatile int dummy;
 
 do
   {
@@ -281,6 +282,7 @@ do
       case OP_BRAZERO:
       case OP_BRAMINZERO:
       if (!set_start_bits(++tcode, start_bits)) return FALSE;
+      dummy = 1;
       do tcode += (tcode[1] << 8) + tcode[2]; while (*tcode == OP_ALT);
       tcode += 3;
       try_next = TRUE;
-- 
2.50.1