Add pcre-8.41-fix_stack_estimator.patch

pcre-8.41-fix_stack_estimator.patch

@@ -0,0 +1,24 @@
+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>
+
+diff --git a/pcre/pcre_exec.c b/pcre/pcre_exec.c
+--- a/pcre/pcre_exec.c
++++ b/pcre/pcre_exec.c
+@@ -509,6 +509,12 @@
+                  (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,