From f3480939ffccf7a72b060b4fc21dd85b55f535f6 Mon Sep 17 00:00:00 2001
From: Ken Brown <kbrown@cornell.edu>
Date: Mon, 6 Jul 2015 16:00:37 -0400
Subject: [PATCH] * src/sysdep.c (handle_sigsegv) [CYGWIN]: Increase
 STACK_DANGER_ZONE

---
 src/sysdep.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/sysdep.c b/src/sysdep.c
index 0a0b0ac01d0..91036f07c58 100644
--- a/src/sysdep.c
+++ b/src/sysdep.c
@@ -1646,7 +1646,14 @@ handle_sigsegv (int sig, siginfo_t *siginfo, void *arg)
 
       if (!getrlimit (RLIMIT_STACK, &rlim))
 	{
+	  /* STACK_DANGER_ZONE has to be bigger than 16K on Cygwin, for
+	     reasons explained in
+	     https://www.cygwin.com/ml/cygwin/2015-06/msg00381.html.  */
+#ifdef CYGWIN
+	  enum { STACK_DANGER_ZONE = 32 * 1024 };
+#else
 	  enum { STACK_DANGER_ZONE = 16 * 1024 };
+#endif
 	  char *beg, *end, *addr;
 
 	  beg = stack_bottom;
-- 
2.11.4.GIT