From d8e2463c75d946f30af19705ad922085185784a5 Mon Sep 17 00:00:00 2001
From: Brian Inglis <Brian.Inglis@SystematicSW.ab.ca>
Date: Tue, 29 Aug 2017 11:25:43 -0600
Subject: [PATCH] winsup/cygwin/libc/strptime.cc(__strptime) fix %F width

---
 winsup/cygwin/libc/strptime.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/winsup/cygwin/libc/strptime.cc b/winsup/cygwin/libc/strptime.cc
index 7c6cc2024..081aca385 100644
--- a/winsup/cygwin/libc/strptime.cc
+++ b/winsup/cygwin/libc/strptime.cc
@@ -413,13 +413,15 @@ literal:
 		case 'F':	/* The date as "%Y-%m-%d". */
 			{
 			  LEGAL_ALT(0);
-			  ymd |= SET_YMD;
 			  char *tmp = __strptime ((const char *) bp, "%Y-%m-%d",
 						  tm, era_info, alt_digits,
 						  locale);
-			  if (tmp && (uint) (tmp - (char *) bp) > width)
+			  /* width max chars converted, default 10, < 6 => 6 */
+			  if (tmp && (char *) bp +
+				(!width ? 10 : width < 6 ? 6 : width) < tmp)
 			    return NULL;
 			  bp = (const unsigned char *) tmp;
+			  ymd |= SET_YMD;
 			  continue;
 			}