Avoid integer overflow on exotic platforms.

[gnulib.git] / lib / posixtm.c

diff --git a/lib/posixtm.c b/lib/posixtm.c
index 22f636e..85936f3 100644 (file)
--- a/lib/posixtm.c
+++ b/lib/posixtm.c
@@ -1,6 +1,6 @@
 /* Parse dates for touch and date.
 
-   Copyright (C) 1989, 1990, 1991, 1998, 2000, 2001, 2002, 2003, 2004
+   Copyright (C) 1989, 1990, 1991, 1998, 2000, 2001, 2002, 2003, 2004, 2005
    Free Software Foundation Inc.
 
    This program is free software; you can redistribute it and/or modify
@@ -15,7 +15,7 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
 
 /* Yacc-based version written by Jim Kingdon and David MacKenzie.
    Rewritten by Jim Meyering.  */
@@ -38,7 +38,10 @@
 #endif
 
 #include "posixtm.h"
-#include "unlocked-io.h"
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
 
 /* ISDIGIT differs from isdigit, as follows:
    - Its arg may be any int or unsigned int; it need not be an unsigned char.
@@ -190,7 +193,15 @@ posix_time_parse (struct tm *tm, const char *s, unsigned int syntax_bits)
 bool
 posixtime (time_t *p, const char *s, unsigned int syntax_bits)
 {
-  struct tm tm0;
+  struct tm tm0
+#ifdef lint
+  /* Placate gcc-4's -Wuninitialized.
+     posix_time_parse fails to set all of tm0 only when it returns
+     nonzero (due to year() returning nonzero), and in that case,
+     this code doesn't use the tm0 at all.  */
+    = { 0, }
+#endif
+    ;
   struct tm tm1;
   struct tm const *tm;
   time_t t;