From 012918bf11fbc2a94dc2319d15d05595c351b811 Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Sat, 29 May 2021 11:37:09 +0300
Subject: [PATCH] [SV 58656] Fix mtime for large files on MS-Windows

In MSVC builds, 'stat' fails when called on files larger than
2GB.  Call '_stat64' instead to work around this.

* src/remake.c (STAT): Define to '_stat64' for MSVC builds.
(name_mtime) [WINDOWS32]: Use STAT instead of 'stat'.
Suggested by Makoto Kato <m_kato@ga2.so-net.ne.jp>.
---
 src/remake.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/remake.c b/src/remake.c
index dc3097c2..f7605fc0 100644
--- a/src/remake.c
+++ b/src/remake.c
@@ -35,6 +35,13 @@ this program.  If not, see <http://www.gnu.org/licenses/>.  */
 #endif
 #ifdef WINDOWS32
 #include <io.h>
+#include <sys/stat.h>
+#if defined(_MSC_VER) && _MSC_VER > 1200
+/* VC7 or later supprots _stat64 to access 64-bit file size. */
+#define STAT _stat64
+#else
+#define STAT stat
+#endif
 #endif
 
 
@@ -1466,7 +1473,11 @@ static FILE_TIMESTAMP
 name_mtime (const char *name)
 {
   FILE_TIMESTAMP mtime;
+#if defined(WINDOWS32)
+  struct STAT st;
+#else
   struct stat st;
+#endif
   int e;
 
 #if defined(WINDOWS32)
@@ -1498,7 +1509,11 @@ name_mtime (const char *name)
         tend = &tem[0];
       }
 
+#if defined(WINDOWS32)
+    e = STAT (tem, &st);
+#else
     e = stat (tem, &st);
+#endif
     if (e == 0 && !_S_ISDIR (st.st_mode) && tend < tem + (p - name - 1))
       {
         errno = ENOTDIR;