Fix -feliminate-dwarf2-dups ICE.

       gcc
       * dwarf2out.c (is_main_source): Remove variable.
       (dwarf2out_start_source_file): Do not check is_main_source.
       Do not reset is_main_source.
       (dwarf2out_init): Do not initialize is_main_source.

       testsuite
       * gcc.dg/debug/dwarf2-3.h: New test.
       * gcc.dg/debug/dwarf2-3.c: New test case for -feliminate-dwarf2-dups.

From-SVN: r72166

gcc/ChangeLog

+2003-10-06  Devang Patel  <dpatel@apple.com>
+
+	* dwarf2out.c (is_main_source): Remove variable.
+	(dwarf2out_start_source_file): Do not check is_main_source.
+	Do not reset is_main_source.
+	(dwarf2out_init): Do not initialize is_main_source.
+	
 2003-10-06  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
 
 	* fixinc/inclhack.def (stdio_va_list): Removed _ap fix.

gcc/dwarf2out.c

@@ -3443,12 +3443,6 @@ static unsigned long next_die_offset;
 /* Record the root of the DIE's built for the current compilation unit.  */
 static GTY(()) dw_die_ref comp_unit_die;
 
-#ifdef DWARF2_DEBUGGING_INFO
-/* We need special handling in dwarf2out_start_source_file if it is
-   first one.  */
-static int is_main_source;
-#endif
-
 /* A list of DIEs with a NULL parent waiting to be relocated.  */
 static GTY(()) limbo_die_node *limbo_die_list;
 
@@ -12285,7 +12279,7 @@ dwarf2out_source_line (unsigned int line, const char *filename)
 static void
 dwarf2out_start_source_file (unsigned int lineno, const char *filename)
 {
-  if (flag_eliminate_dwarf2_dups && !is_main_source)
+  if (flag_eliminate_dwarf2_dups)
     {
       /* Record the beginning of the file for break_out_includes.  */
       dw_die_ref bincl_die;
@@ -12294,8 +12288,6 @@ dwarf2out_start_source_file (unsigned int lineno, const char *filename)
       add_AT_string (bincl_die, DW_AT_name, filename);
     }
 
-  is_main_source = 0;
-
   if (debug_info_level >= DINFO_LEVEL_VERBOSE)
     {
       named_section_flags (DEBUG_MACINFO_SECTION, SECTION_DEBUG);
@@ -12396,7 +12388,6 @@ dwarf2out_init (const char *filename ATTRIBUTE_UNUSED)
      invoked when the given (base) source file was compiled.  We will fill
      in this value in dwarf2out_finish.  */
   comp_unit_die = gen_compile_unit_die (NULL);
-  is_main_source = 1;
 
   VARRAY_TREE_INIT (incomplete_types, 64, "incomplete_types");
 

gcc/testsuite/ChangeLog

+2003-10-06  Devang Patel  <dpatel@apple.com>
+
+	* gcc.dg/debug/dwarf2-3.h: New test.
+	* gcc.dg/debug/dwarf2-3.c: New test case for -feliminate-dwarf2-dups.
+	
 2003-10-06  Wolfgang Bangerth  <bangerth@ticam.utexas.edu>
 
 	* g++.dg/opt/cfg2.C: New test.

gcc/testsuite/gcc.dg/debug/dwarf2-3.c

+/* Test -feliminate-dwarf2-dups */
+/* Contributed by Devang Patel <dpatel@apple.com> */
+/* { dg-do compile } */
+/* { dg-options "-feliminate-dwarf2-dups" } */
+
+#include "dwarf2-3.h"
+
+int main()
+{
+  struct point p;
+  p.x = 0;
+  p.y = 0;
+}

gcc/testsuite/gcc.dg/debug/dwarf2-3.h

+/* Test -feliminate-dwarf2-dups */
+/* Contributed by Devang Patel <dpatel@apple.com> */
+
+struct point
+{
+  int x;
+  int y;
+};
+