From 0ad3618f226deee531bcced057afa1b52d5b41f5 Mon Sep 17 00:00:00 2001
From: Sergei Golubchik <vuvova@gmail.com>
Date: Wed, 14 Aug 2019 12:09:30 +0400
Subject: [PATCH] Fix recursion stack estimator

Due to inlining match() by recent GCC, the stack estimator reported 4-bytes
stack consumption.

Author: Sergei Golubchik <vuvova@gmail.com>
<https://bugs.exim.org/show_bug.cgi?id=2173>
---
 pcre_exec.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pcre_exec.c b/pcre_exec.c
index 3fd58cb..2b4d704 100644
--- a/pcre_exec.c
+++ b/pcre_exec.c
@@ -509,6 +509,12 @@ Returns:       MATCH_MATCH if matched            )  these values are >= 0
                  (e.g. stopped by repeated call or recursion limit)
 */
 
+#ifdef __GNUC__
+static int
+match(REGISTER PCRE_PUCHAR eptr, REGISTER const pcre_uchar *ecode,
+  PCRE_PUCHAR mstart, int offset_top, match_data *md, eptrblock *eptrb,
+  unsigned int rdepth) __attribute__((noinline,noclone));
+#endif
 static int
 match(REGISTER PCRE_PUCHAR eptr, REGISTER const pcre_uchar *ecode,
   PCRE_PUCHAR mstart, int offset_top, match_data *md, eptrblock *eptrb,
-- 
2.23.0.rc1