re PR debug/52027 (ICE: SIGSEGV in set_cur_line_info_table (dwarf2out.c:20428)…

re PR debug/52027 (ICE: SIGSEGV in set_cur_line_info_table (dwarf2out.c:20428) with -O -freorder-blocks-and-partition -fno-reorder-functions -fprofile-use)

	PR debug/52027
	* dwarf2out.c (dwarf2out_switch_text_section): Don't call
	set_cur_line_info_table if not emitting debug info.

	* gcc.dg/tree-prof/pr52027.c: New test.

From-SVN: r183725

gcc/ChangeLog

 2012-01-30  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/52027
+	* dwarf2out.c (dwarf2out_switch_text_section): Don't call
+	set_cur_line_info_table if not emitting debug info.
+
 	PR tree-optimization/52046
 	* tree-vect-patterns.c (check_bool_pattern): Give up if
 	a comparison could throw.

gcc/dwarf2out.c

@@ -1177,6 +1177,7 @@ dwarf2out_switch_text_section (void)
 
   var_location_switch_text_section ();
 
+  if (cold_text_section != NULL)
     set_cur_line_info_table (sect);
 }
 

gcc/testsuite/ChangeLog

 2012-01-30  Jakub Jelinek  <jakub@redhat.com>
 
+	PR debug/52027
+	* gcc.dg/tree-prof/pr52027.c: New test.
+
 	PR tree-optimization/52046
 	* gcc.dg/pr52046.c: New test.
 

gcc/testsuite/gcc.dg/tree-prof/pr52027.c

+/* PR debug/52027 */
+/* { dg-require-effective-target freorder } */
+/* { dg-options "-O -freorder-blocks-and-partition -fno-reorder-functions" } */
+
+void
+foo (int len)
+{
+  char array[1000];
+  __builtin_memset (array, 0, len);
+}
+
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 1000; i++)
+    foo (8);
+  return 0;
+}