cpperror.c (print_file_and_line): If line is (unsigned int)-1, print just the filename.

	* cpperror.c (print_file_and_line): If line is (unsigned int)-1,
	print just the filename.
	* cpplex.c (_cpp_run_directive): Add additional argument, the
	name to give the synthetic buffer.  This defaults to
	translated "<command line>".
	* cpplib.c (cpp_define, cpp_undef, cpp_assert, cpp_unassert):
	Adjust to match.
	(_cpp_define_builtin): New function.
	* cppinit.c (initialize_builtins): Use _cpp_define_builtin.
	* cpphash.h: Update prototypes.

	* tradcpp.c (main): Process -D and -U simultaneously, in the
	order they appeared on the command line.

From-SVN: r36043

gcc/ChangeLog

+2000-08-29  Zack Weinberg  <zack@wolery.cumb.org>
+
+	* cpperror.c (print_file_and_line): If line is (unsigned int)-1,
+	print just the filename.
+	* cpplex.c (_cpp_run_directive): Add additional argument, the
+	name to give the synthetic buffer.  This defaults to
+	translated "<command line>".
+	* cpplib.c (cpp_define, cpp_undef, cpp_assert, cpp_unassert):
+	Adjust to match.
+	(_cpp_define_builtin): New function.
+	* cppinit.c (initialize_builtins): Use _cpp_define_builtin.
+	* cpphash.h: Update prototypes.
+
+	* tradcpp.c (main): Process -D and -U simultaneously, in the
+	order they appeared on the command line.
+
 2000-08-29  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* c-decl.c (define_label): Call warning_with_file_and_line and

gcc/cpperror.c

@@ -91,17 +91,15 @@ print_file_and_line (filename, line, column)
      const char *filename;
      unsigned int line, column;
 {
-  if (line == 0)
-    fputs (_("<command line>: "), stderr);
-  else
-    {
   if (filename == 0 || *filename == '\0')
     filename = "<stdin>";
-      if (column > 0)
+
+  if (line == (unsigned int)-1)
+    fprintf (stderr, "%s: ", filename);
+  else if (column > 0)
     fprintf (stderr, "%s:%u:%u: ", filename, line, column);
   else
     fprintf (stderr, "%s:%u: ", filename, line);
-    }
 }
 
 /* Set up for an error message: print the file and line, bump the error

gcc/cpphash.h

@@ -267,7 +267,8 @@ extern int _cpp_equiv_tokens		PARAMS ((const cpp_token *,
 						 const cpp_token *));
 extern void _cpp_run_directive		PARAMS ((cpp_reader *,
 						 const struct directive *,
-						 const char *, size_t));
+						 const char *, size_t,
+						 const char *));
 extern unsigned int _cpp_get_line	PARAMS ((cpp_reader *,
 						 unsigned int *));
 extern const cpp_token *_cpp_get_token PARAMS ((cpp_reader *));
@@ -284,6 +285,8 @@ extern cpp_hashnode *_cpp_parse_assertion PARAMS ((cpp_reader *,
 						    struct answer **));
 extern struct answer **_cpp_find_answer	PARAMS ((cpp_hashnode *,
 						 const cpp_toklist *));
+extern void _cpp_define_builtin		PARAMS ((cpp_reader *, const char *));
+
 extern void _cpp_init_stacks	PARAMS ((cpp_reader *));
 extern void _cpp_cleanup_stacks	PARAMS ((cpp_reader *));
 extern void _cpp_init_internal_pragmas PARAMS ((cpp_reader *));

gcc/cppinit.c

@@ -610,9 +610,9 @@ initialize_builtins (pfile)
 
 	  if (b->flags & VERS)
 	    {
-	      /* Allocate enough space for 'name="value"\0'.  */
-	      str = xmalloc (b->len + strlen (version_string) + 4);
-	      sprintf (str, "%s=\"%s\"", b->name, version_string);
+	      /* Allocate enough space for 'name "value"\n\0'.  */
+	      str = alloca (b->len + strlen (version_string) + 5);
+	      sprintf (str, "%s \"%s\"\n", b->name, version_string);
 	    }
 	  else
 	    {
@@ -621,13 +621,12 @@ initialize_builtins (pfile)
 	      else
 		val = b->value;
 
-	      /* Allocate enough space for "name=value\0".  */
-	      str = xmalloc (b->len + strlen (val) + 2);
-	      sprintf(str, "%s=%s", b->name, val);
+	      /* Allocate enough space for "name value\n\0".  */
+	      str = alloca (b->len + strlen (val) + 3);
+	      sprintf(str, "%s %s\n", b->name, val);
 	    }
 
-	  cpp_define (pfile, str);
-	  free (str);
+	  _cpp_define_builtin (pfile, str);
 	}
       else
 	{

gcc/cpplex.c

@@ -3565,16 +3565,23 @@ _cpp_skip_rest_of_line (pfile)
 /* Directive handler wrapper used by the command line option
    processor.  */
 void
-_cpp_run_directive (pfile, dir, buf, count)
+_cpp_run_directive (pfile, dir, buf, count, name)
      cpp_reader *pfile;
      const struct directive *dir;
      const char *buf;
      size_t count;
+     const char *name;
 {
   if (cpp_push_buffer (pfile, (const U_CHAR *)buf, count) != NULL)
     {
       unsigned int prev_lvl = 0;
 
+      if (name)
+	CPP_BUFFER (pfile)->nominal_fname = name;
+      else
+	CPP_BUFFER (pfile)->nominal_fname = _("<command line>");
+      CPP_BUFFER (pfile)->lineno = (unsigned int)-1;
+
       /* Scan the line now, else prevent_macro_expansion won't work.  */
       lex_next (pfile, 1);
       if (! (dir->flags & EXPAND))

gcc/cpplib.c

@@ -1410,7 +1410,20 @@ cpp_define (pfile, str)
       strcpy (&buf[count-4], " 1\n");
     }
 
-  _cpp_run_directive (pfile, &dtable[T_DEFINE], buf, count - 1);
+  _cpp_run_directive (pfile, &dtable[T_DEFINE], buf, count - 1, 0);
+}
+
+/* Slight variant of the above for use by initialize_builtins, which (a)
+   knows how to set up the buffer itself, (b) needs a different "filename"
+   tag.  */
+void
+_cpp_define_builtin (pfile, str)
+     cpp_reader *pfile;
+     const char *str;
+{
+  _cpp_run_directive (pfile, &dtable[T_DEFINE],
+		      str, strlen (str),
+		      _("<builtin>"));
 }
 
 /* Process MACRO as if it appeared as the body of an #undef.  */
@@ -1419,7 +1432,7 @@ cpp_undef (pfile, macro)
      cpp_reader *pfile;
      const char *macro;
 {
-  _cpp_run_directive (pfile, &dtable[T_UNDEF], macro, strlen (macro));
+  _cpp_run_directive (pfile, &dtable[T_UNDEF], macro, strlen (macro), 0);
 }
 
 /* Process the string STR as if it appeared as the body of a #assert. */
@@ -1428,7 +1441,7 @@ cpp_assert (pfile, str)
      cpp_reader *pfile;
      const char *str;
 {
-  _cpp_run_directive (pfile, &dtable[T_ASSERT], str, strlen (str));
+  _cpp_run_directive (pfile, &dtable[T_ASSERT], str, strlen (str), 0);
 }
 
 /* Process STR as if it appeared as the body of an #unassert. */
@@ -1437,7 +1450,7 @@ cpp_unassert (pfile, str)
      cpp_reader *pfile;
      const char *str;
 {
-  _cpp_run_directive (pfile, &dtable[T_UNASSERT], str, strlen (str));
+  _cpp_run_directive (pfile, &dtable[T_UNASSERT], str, strlen (str), 0);
 }  
 
 /* Determine whether the identifier ID, of length LEN, is a defined macro.  */

gcc/tradcpp.c

@@ -711,14 +711,11 @@ main (argc, argv)
      and option processing.  */
   initialize_builtins ();
 
-  /* Do defines specified with -D.  */
+  /* Do defines specified with -D and undefines specified with -U.  */
   for (i = 1; i < argc; i++)
     if (pend_defs[i])
       make_definition ((U_CHAR *)pend_defs[i]);
-
-  /* Do undefines specified with -U.  */
-  for (i = 1; i < argc; i++)
-    if (pend_undefs[i])
+    else if (pend_undefs[i])
       make_undef ((U_CHAR *)pend_undefs[i]);
 
   /* Unless -fnostdinc,