re PR debug/41695 (Invalid .debug_loc created)

	PR debug/41695
	* dwarf2out.c (dwarf2out_var_location): Always clear
	last_postcall_label when changing last_label.

	* gcc.dg/debug/dwarf2/pr41695.c: New test.

From-SVN: r152760

gcc/ChangeLog

+2009-10-14  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/41695
+	* dwarf2out.c (dwarf2out_var_location): Always clear
+	last_postcall_label when changing last_label.
+
 2009-10-14  Pascal Obry  <obry@adacore.com>
 
 	* gcc.c (DEFAULT_SWITCH_CURTAILS_COMPILATION): Add -E.

gcc/dwarf2out.c

@@ -20013,8 +20013,7 @@ dwarf2out_var_location (rtx loc_note)
       ASM_OUTPUT_DEBUG_LABEL (asm_out_file, "LVL", loclabel_num);
       loclabel_num++;
       last_label = ggc_strdup (loclabel);
-      if (!NOTE_DURING_CALL_P (loc_note))
-	last_postcall_label = NULL;
+      last_postcall_label = NULL;
     }
   newloc->var_loc_note = loc_note;
   newloc->next = NULL;

gcc/testsuite/ChangeLog

+2009-10-14  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/41695
+	* gcc.dg/debug/dwarf2/pr41695.c: New test.
+
 2009-10-14  Uros Bizjak  <ubizjak@gmail.com>
 
 	* gcc.target/i386/i386.exp (check_effective_target_ms_hook_prologue):
 	New procedure.
-	* gcc.target/i386/ms_hook_prologue.c: Check for  ms_hook_prologue
+	* gcc.target/i386/ms_hook_prologue.c: Check for ms_hook_prologue
 	effective target.
 
 2009-10-14  Jason Merrill  <jason@redhat.com>

gcc/testsuite/gcc.dg/debug/dwarf2/pr41695.c

+/* PR debug/41695 */
+/* { dg-do compile } */
+/* { dg-options "-g -O2 -dA -fno-merge-debug-strings" } */
+
+int bar (int);
+
+void
+foo (void)
+{
+  int b = 0;
+  b = bar (b);
+  b = bar (b);
+  b = bar (b);
+  b = bar (b);
+  bar (b);
+}
+
+/* { dg-final { scan-assembler-not "LVL(\[0-9\]+)-\[^1\]\[^\\r\\n\]*Location list begin address\[^\\r\\n\]*\[\\r\\n\]+\[^\\r\\n\]*LVL\\1-1-" } } */