re PR preprocessor/33919 (__BASE_FILE__ does not expand correctly when included from the command line)

libcpp/
	PR preprocessor/33919
	* files.c (_cpp_get_file_name): New. Implement file name
	access function.
	* internal.h (_cpp_get_file_name): New prototype.
	* macro.c (_cpp_builtin_macro_text): Call _cpp_get_file_name()
	to use pfile->main_file in lieu of traversing INCLUDED_FROM chain.

gcc/testsuite/
	PR preprocessor/33919
	* gcc.dg/pr33919.c: New test.
	* gcc.dg/pr33919-0.h: New test header file.
	* gcc.dg/pr33919-1.h: Ditto.
	* gcc.dg/pr33919-2.h: Ditto.

From-SVN: r183003

4 files changed, 24 insertions, 8 deletions

diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index dfe18d0..8a1eb05 100644
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,12 @@
+2012-01-09  Gary Funck  <gary@intrepid.com>
+
+	PR preprocessor/33919
+	* files.c (_cpp_get_file_name): New. Implement file name
+	access function.
+	* internal.h (_cpp_get_file_name): New prototype.
+	* macro.c (_cpp_builtin_macro_text): Call _cpp_get_file_name()
+	to use pfile->main_file in lieu of traversing INCLUDED_FROM chain.
+
 2012-01-03  Olivier Hainque  <hainque@adacore.com>
 
 	* system.h: Prior to #define, #undef fopen and freopen unconditionally.
diff --git a/libcpp/files.c b/libcpp/files.c
index fad8b75..29ccf3b 100644
--- a/libcpp/files.c
+++ b/libcpp/files.c
@@ -1,7 +1,7 @@
 /* Part of CPP library.  File handling.
    Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
-   Free Software Foundation, Inc.
+   1999, 2000, 2001, 2002, 2003, 2004, 2005,
+   2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
    Written by Per Bothner, 1994.
    Based on CCCP program by Paul Rubin, June 1986
    Adapted to ANSI C, Richard Stallman, Jan 1987
@@ -1370,6 +1370,13 @@ _cpp_pop_file_buffer (cpp_reader *pfile, _cpp_file *file)
     }
 }
 
+/* Return the file name associated with FILE.  */
+const char *
+_cpp_get_file_name (_cpp_file *file)
+{
+  return file->name;
+}
+
 /* Inteface to file statistics record in _cpp_file structure. */
 struct stat *
 _cpp_get_file_stat (_cpp_file *file)
diff --git a/libcpp/internal.h b/libcpp/internal.h
index 7e2932a..5b3731b 100644
--- a/libcpp/internal.h
+++ b/libcpp/internal.h
@@ -1,6 +1,6 @@
 /* Part of CPP library.
    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
-   2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+   2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
 
 This program is free software; you can redistribute it and/or modify it
 under the terms of the GNU General Public License as published by the
@@ -635,6 +635,7 @@ extern void _cpp_cleanup_files (cpp_reader *);
 extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *);
 extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f);
 extern bool _cpp_read_file_entries (cpp_reader *, FILE *);
+extern const char *_cpp_get_file_name (_cpp_file *);
 extern struct stat *_cpp_get_file_stat (_cpp_file *);
 
 /* In expr.c */
diff --git a/libcpp/macro.c b/libcpp/macro.c
index d96b2631a..32f99ca 100644
--- a/libcpp/macro.c
+++ b/libcpp/macro.c
@@ -1,7 +1,7 @@
 /* Part of CPP library.  (Macro and #define handling.)
    Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1998,
    1999, 2000, 2001, 2002, 2003, 2004, 2005,
-   2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+   2006, 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
    Written by Per Bothner, 1994.
    Based on CCCP program by Paul Rubin, June 1986
    Adapted to ANSI C, Richard Stallman, Jan 1987
@@ -278,10 +278,9 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node)
 						 pfile->line_table->highest_line);
 	else
 	  {
-	    map = linemap_lookup (pfile->line_table, pfile->line_table->highest_line);
-	    while (! MAIN_FILE_P (map))
-	      map = INCLUDED_FROM (pfile->line_table, map);
-	    name = ORDINARY_MAP_FILE_NAME (map);
+	    name = _cpp_get_file_name (pfile->main_file);
+	    if (!name)
+	      abort ();
 	  }
 	len = strlen (name);
 	buf = _cpp_unaligned_alloc (pfile, len * 2 + 3);