parse.y (end_artificial_method_body): Fixed undefined behavior.

2000-12-15  Alexandre Petit-Bianco  <apbianco@cygnus.com>

	* parse.y (end_artificial_method_body): Fixed undefined behavior.
	Credits go to rth for finding it.

(http://gcc.gnu.org/ml/gcc/2000-12/msg00495.html)

From-SVN: r38278

gcc/java/ChangeLog

+2000-12-15  Alexandre Petit-Bianco  <apbianco@cygnus.com>
+
+	* parse.y (end_artificial_method_body): Fixed undefined behavior.
+	Credits go to rth for finding it.
+
 2000-12-13  Mike Stump  <mrs@wrs.com>
 
 	* parse.y (check_static_final_variable_assignment_flag): Fix spelling.

gcc/java/parse.y

@@ -7200,7 +7200,11 @@ static void
 end_artificial_method_body (mdecl)
      tree mdecl;
 {
-  BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (mdecl)) = exit_block ();
+  /* exit_block modifies DECL_FUNCTION_BODY (current_function_decl).
+     It has to be evaluated first. (if mdecl is current_function_decl,
+     we have an undefined behavior if no temporary variable is used.) */
+  tree b = exit_block ();
+  BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (mdecl)) = b;
   exit_block ();
 }