This hack to attach a line 0 source_location to the return statement of main...

This hack to attach a line 0 source_location to the
return statement of main, after parsing is over, was
creating a bug in the line_table, creating an extra
entry, which was creating problems now that we are
trying to serialize the line_table in pph.

* decl.c (finish_function): Remove unecessary line 0 hack.

From-SVN: r177485

gcc/cp/ChangeLog

+2011-08-05  Gabriel Charette  <gchare@google.com>
+
+	* decl.c (finish_function): Remove unecessary line 0 hack.
+
 2011-08-05  Jason Merrill  <jason@redhat.com>
 
 	PR c++/47453

gcc/cp/decl.c

@@ -13227,22 +13227,13 @@ finish_function (int flags)
     {
       if (DECL_MAIN_P (current_function_decl))
 	{
-	  tree stmt;
-
 	  /* Make it so that `main' always returns 0 by default (or
 	     1 for VMS).  */
 #if VMS_TARGET
-	  stmt = finish_return_stmt (integer_one_node);
+	  finish_return_stmt (integer_one_node);
 #else
-	  stmt = finish_return_stmt (integer_zero_node);
+	  finish_return_stmt (integer_zero_node);
 #endif
-	  /* Hack.  We don't want the middle-end to warn that this
-	     return is unreachable, so put the statement on the
-	     special line 0.  */
-	  {
-	    location_t linezero = linemap_line_start (line_table, 0, 1);
-	    SET_EXPR_LOCATION (stmt, linezero);
-	  }
 	}
 
       if (use_eh_spec_block (current_function_decl))