re PR debug/20253 (Macro debug info broken due to lexer change)

2005-03-03  Daniel Berlin <dberlin@dbrelin.org>

	Fix PR debug/20253

	* c-opts.c (c_common_parse_file): Call start_source_file
	and end_source_file at the approriate times.

	* dwarf2out.c (dwarf2out_finish): Don't auto-end
	the main file, it will be done for us now.

From-SVN: r95872

gcc/ChangeLog

+2005-03-03  Daniel Berlin <dberlin@dbrelin.org>
+
+	Fix PR debug/20253
+	
+	* c-opts.c (c_common_parse_file): Call start_source_file
+	and end_source_file at the approriate times.
+
+	* dwarf2out.c (dwarf2out_finish): Don't auto-end
+	the main file, it will be done for us now.
+	
 2005-03-04  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* fold-const.c (fold_ternary): New.

gcc/c-opts.c

@@ -1089,13 +1089,16 @@ c_common_parse_file (int set_yydebug)
   i = 0;
   for (;;)
     {
+      /* Start the main input file */
+      (*debug_hooks->start_source_file) (0, this_input_filename);
       finish_options ();
       pch_init ();
       push_file_scope ();
       c_parse_file ();
       finish_file ();
       pop_file_scope ();
-
+      /* And end the main input file. */
+      (*debug_hooks->end_source_file) (0);
       if (++i >= num_in_fnames)
 	break;
       cpp_undef_all (parse_in);

gcc/dwarf2out.c

@@ -10497,8 +10497,12 @@ add_abstract_origin_attribute (dw_die_ref die, tree origin)
 
       if (TYPE_P (fn))
 	fn = TYPE_STUB_DECL (fn);
+      
+      /* TYPE_STUB_DECL may have given us a NULL, which decl_function_context
+	 won't like.  */
+      if (fn)	
+	fn = decl_function_context (fn);
 
-      fn = decl_function_context (fn);
       if (fn)
 	dwarf2out_abstract_function (fn);
     }
@@ -13795,11 +13799,10 @@ dwarf2out_finish (const char *filename)
       output_ranges ();
     }
 
-  /* Have to end the primary source file.  */
+  /* Have to end the macro section.  */
   if (debug_info_level >= DINFO_LEVEL_VERBOSE)
     {
       named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG);
-      dw2_asm_output_data (1, DW_MACINFO_end_file, "End file");
       dw2_asm_output_data (1, 0, "End compilation unit");
     }
 

gcc/testsuite/gcc.dg/debug/dwarf2/dwarf2-macro.c

+/* Test to make sure the mcaro info includes a start file command for the main source */
+/* { dg-do compile */
+/* { dg-options "-g3 -gdwarf-2 -dA -fverbose-asm" } */
+/* { dg-final { scan-assembler "Start new file" } } */
+
+#define ADD(x) (M + x)
+
+int main (void)
+{
+#define N 28
+#define M 42
+   return ADD(N);
+}