c-lex.c: Move main_input_filename handling to FC_ENTER.

        * c-lex.c: Move main_input_filename handling to FC_ENTER. Clean up.
        * cpperror.c (print_containing_files): Get right line number.
        (print_location): Output column of 1 if 0.
        * cppfiles.c (stack_include_file): cpp_push_buffer handles
        the callback.
        * cpphash.h (_cpp_do_file_change): No longer external.
        * cpplib.c (do_file_change): Now local to cpplib.c.
        (do_line): Fake a buffer stack for preprocessed files.
        (cpp_push_buffer): Create a file_change callback.  Handle faked
        buffers.
        (cpp_pop_buffer): Similarly.
        * cpplib.h: BUF_FAKE: New buffer type.
        * cppmain.c: Update to handle correct file renaming where a
        #line is the first line of the main file, and produce only
        the renamed file, not the original file, as output.

From-SVN: r38319

1 files changed, 4 insertions, 8 deletions

diff --git a/gcc/c-lex.c b/gcc/c-lex.c
index cf65cea..13e0ef2 100644
--- a/gcc/c-lex.c
+++ b/gcc/c-lex.c
@@ -234,14 +234,10 @@ cb_change_file (pfile, fc)
      cpp_reader *pfile ATTRIBUTE_UNUSED;
      const cpp_file_change *fc;
 {
-  if (fc->from.filename == 0)
-    main_input_filename = fc->to.filename;
-  in_system_header = fc->sysp;
-
   /* Do the actions implied by the preceding numbers.  */
   if (fc->reason == FC_ENTER)
     {
-      /* FIXME.  Don't stack the main buffer on the input stack.  */
+      /* Don't stack the main buffer on the input stack.  */
       if (fc->from.filename)
 	{
 	  lineno = lex_lineno;
@@ -258,6 +254,8 @@ cb_change_file (pfile, fc)
 	    }
 #endif
 	}
+      else
+	main_input_filename = fc->to.filename;
     }
   else if (fc->reason == FC_LEAVE)
     {
@@ -288,11 +286,9 @@ cb_change_file (pfile, fc)
       else
 	error ("leaving more files than we entered");
     }
-  else if (fc->reason == FC_RENAME)
-    input_filename = fc->to.filename;
 
   update_header_times (fc->to.filename);
-
+  in_system_header = fc->sysp;
   input_filename = fc->to.filename;
   lex_lineno = fc->to.lineno;