win32: fix strftime(3) '%s' format

The '%s' format of our strftime(3) wrapper (display number of
seconds since the Unix epoch) returned incorrect results on 64-bit
systems for times more than 2^31 seconds after the epoch.

Use the correct format.

Adds 16 bytes.

(GitHub issue #446)

1 files changed, 1 insertions, 1 deletions

diff --git a/win32/mingw.c b/win32/mingw.c
index a7540d220..dfe38734a 100644
--- a/win32/mingw.c
+++ b/win32/mingw.c
@@ -1936,7 +1936,7 @@ size_t mingw_strftime(char *buf, size_t max, const char *format, const struct tm
                         }
                         else if ( t[1] == 's' ) {
                                 tm2 = *tm;
-                                sprintf(buffer, "%d", (int)mktime(&tm2));
+                                sprintf(buffer, "%"LL_FMT"d", (long long)mktime(&tm2));
                                 replace = buffer;
                         }
                         else if ( t[1] == 'T' ) {