tests: Fix t-gettime for a time_t of 64 and a long of 32 bit.

* configure.ac (AC_CHECK_HEADERS): Add stdint.h.
* common/t-gettime.c: Include stdint.h.
(UINTMAX_C): Define replacement.
(test_isotime2epoch): Use UINTMAX_C for the >32 bit constants.
--

This is for example the case on 32 bit OpenBSD.

Signed-off-by: Werner Koch <wk@gnupg.org>

common/t-gettime.c

@@ -20,9 +20,18 @@
 #include <config.h>
 #include <stdio.h>
 #include <stdlib.h>
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
 
 #include "util.h"
 
+/* In case we do not have stdint.h and no other version of that
+ * conversion macro provide shortcut it.  */
+#ifndef UINTMAX_C
+#define UINTMAX_C (c)  (c)
+#endif
+
 #define pass()  do { ; } while(0)
 #define fail(a)  do { fprintf (stderr, "%s:%d: test %d failed\n",\
                                __FILE__,__LINE__, (a));          \
@@ -55,10 +64,10 @@ test_isotime2epoch (void)
     { "20070629T160000\n", 1183132800 },
     { "20070629T160000.",  INVALID },
 #if SIZEOF_TIME_T > 4
-    { "21060207T062815", (time_t)0x0ffffffff },
-    { "21060207T062816", (time_t)0x100000000 },
-    { "21060207T062817", (time_t)0x100000001 },
-    { "21060711T120001", (time_t)4308292801  },
+    { "21060207T062815", (time_t)UINTMAX_C(0x0ffffffff) },
+    { "21060207T062816", (time_t)UINTMAX_C(0x100000000) },
+    { "21060207T062817", (time_t)UINTMAX_C(0x100000001) },
+    { "21060711T120001", (time_t)UINTMAX_C(4308292801)  },
 #endif /*SIZEOF_TIME_T > 4*/
     { NULL, 0 }
   };

configure.ac

@@ -1258,7 +1258,7 @@ AC_MSG_NOTICE([checking for header files])
 AC_HEADER_STDC
 AC_CHECK_HEADERS([string.h unistd.h langinfo.h termio.h locale.h getopt.h \
                   pty.h utmp.h pwd.h inttypes.h signal.h sys/select.h     \
-                  signal.h])
+                  stdint.h signal.h])
 AC_HEADER_TIME