Partially revert/redo 2003-10-01 change; fix -fworking-directory.

	* c-ppoutput.c (pp_dir_change):  New function.
	* c-common.h (pp_dir_change):  New declaration.
	* cpplib.h (struct cpp_options):  Remove working_directory field.
	* cppinit.c (cpp_find_main_file, cpp_push_main_file):  Merge back to
	(cpp_read_main_file):  as before 10-01.  Call _cpp_stack_file.
	Don't handle -fworking_directory here, but in c_common_post_options.
	(read_original_directory): Don't back up when done.
	Don't clear no-longer used working_directory flag.
	* cpplib.h:  Update declarations to match.
	* c-lex.c (cb_dir_change):  Move to c-opts.c.
	(init_c_lex):  Don't set dir_change callback here, since we want
	to set it even if flag_preprocess_only.
	* c-opts.c (cb_dir_change):  Function moved from c-lex.c.
	(c_common_post_options):  Set dir_change callback.
	Call pp_dir_change if approporiate.
	(finish_options):  Don't call cpp_find_main_file here.	Hence remove
	unneeded parameter and result. Do LC_RENAME for <built-in>.
	(c_common_post_options):  Call cpp_read_main_file here instead.
	(c_common_init):  Update accordingly.
	(push_command_line_include):  Don't cpp_push_main_file.
	Do LC_RENAME rather than LC_LEASE to get back to main file.
	Compared to pre-10-01 version, inline cpp_rename_to_main_file.
	(c_common_parse_file):  Call cpp_read_main_file for subsequent main
	files, but call finish_options for all files.
	* c-opts.c (sanitize_cpp_opts):  Don't set cpp_opts->working_directory.
	* fix-header.c (read_scan_file):  Call cpp_read_main_file instead of
	cpp_find_main_file + cpp_push_main_file.
	* c-lex.c (fe_file_change):  Don't set main_input_filename here.
	* opts.c (handle_options):  Only set main_input_filename first time.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@77303 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 1 insertions, 12 deletions

diff --git a/gcc/c-lex.c b/gcc/c-lex.c
index 64471259e43..aba571fab9a 100644
--- a/gcc/c-lex.c
+++ b/gcc/c-lex.c
@@ -69,7 +69,6 @@ static tree lex_charconst (const cpp_token *);
 static void update_header_times (const char *);
 static int dump_one_header (splay_tree_node, void *);
 static void cb_line_change (cpp_reader *, const cpp_token *, int);
-static void cb_dir_change (cpp_reader *, const char *);
 static void cb_ident (cpp_reader *, unsigned int, const cpp_string *);
 static void cb_def_pragma (cpp_reader *, unsigned int);
 static void cb_define (cpp_reader *, unsigned int, cpp_hashnode *);
@@ -96,7 +95,6 @@ init_c_lex (void)
   cb = cpp_get_callbacks (parse_in);
 
   cb->line_change = cb_line_change;
-  cb->dir_change = cb_dir_change;
   cb->ident = cb_ident;
   cb->def_pragma = cb_def_pragma;
   cb->valid_pch = c_common_valid_pch;
@@ -202,13 +200,6 @@ cb_line_change (cpp_reader *pfile ATTRIBUTE_UNUSED, const cpp_token *token,
   input_line = SOURCE_LINE (map, token->line);
 }
 
-static void
-cb_dir_change (cpp_reader *pfile ATTRIBUTE_UNUSED, const char *dir)
-{
-  if (! set_src_pwd (dir))
-    warning ("too late for # directive to set debug directory");
-}
-
 void
 fe_file_change (const struct line_map *new_map)
 {
@@ -222,9 +213,7 @@ fe_file_change (const struct line_map *new_map)
     {
       /* Don't stack the main buffer on the input stack;
 	 we already did in compile_file.  */
-      if (map == NULL)
-	main_input_filename = new_map->to_file;
-      else
+      if (map != NULL)
 	{
           int included_at = SOURCE_LINE (new_map - 1, new_map->from_line - 1);