* config/rs6000/rs6000.c (rs6000_init_builtins): Change

[pf3gnuchains/gcc-fork.git] / libcpp / macro.c

diff --git a/libcpp/macro.c b/libcpp/macro.c
index 2f1a974..67e936e 100644 (file)
--- a/libcpp/macro.c
+++ b/libcpp/macro.c
@@ -123,6 +123,44 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node)
                 NODE_NAME (node));
       break;
 
+    case BT_TIMESTAMP:
+      {
+       cpp_buffer *pbuffer = cpp_get_buffer (pfile);
+       if (pbuffer->timestamp == NULL)
+         {
+           /* Initialize timestamp value of the assotiated file. */
+            struct _cpp_file *file = cpp_get_file (pbuffer);
+           if (file)
+             {
+               /* Generate __TIMESTAMP__ string, that represents 
+                  the date and time of the last modification 
+                  of the current source file. The string constant 
+                  looks like "Sun Sep 16 01:03:52 1973".  */
+               struct tm *tb = NULL;
+               struct stat *st = _cpp_get_file_stat (file);
+               if (st)
+                 tb = localtime (&st->st_mtime);
+               if (tb)
+                 {
+                   char *str = asctime (tb);
+                   size_t len = strlen (str);
+                   unsigned char *buf = _cpp_unaligned_alloc (pfile, len + 2);
+                   buf[0] = '"';
+                   strcpy ((char *) buf + 1, str);
+                   buf[len] = '"';
+                   pbuffer->timestamp = buf;
+                 }
+               else
+                 {
+                   cpp_errno (pfile, CPP_DL_WARNING,
+                       "could not determine file timestamp");
+                   pbuffer->timestamp = U"\"??? ??? ?? ??:??:?? ????\"";
+                 }
+             }
+         }
+       result = pbuffer->timestamp;
+      }
+      break;
     case BT_FILE:
     case BT_BASE_FILE:
       {
@@ -169,16 +207,12 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node)
         However, if (a) we are in a system header, (b) the option
         stdc_0_in_system_headers is true (set by target config), and
         (c) we are not in strictly conforming mode, then it has the
-        value 0.  */
+        value 0.  (b) and (c) are already checked in cpp_init_builtins.  */
     case BT_STDC:
-      {
-       if (cpp_in_system_header (pfile)
-           && CPP_OPTION (pfile, stdc_0_in_system_headers)
-           && !CPP_OPTION (pfile,std))
-         number = 0;
-       else
-         number = 1;
-      }
+      if (cpp_in_system_header (pfile))
+       number = 0;
+      else
+       number = 1;
       break;
 
     case BT_DATE: