(expand_builtin, case BUILT_IN_NEXT_ARG): Strip off INDIRECT_REF when

checking second arg.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@11139 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/expr.c b/gcc/expr.c
index 2fe100c..342fa37 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -8047,10 +8047,13 @@ expand_builtin (exp, target, subtarget, mode, ignore)
            tree arg = TREE_VALUE (arglist);
 
            /* Strip off all nops for the sake of the comparison.  This
-              is not quite the same as STRIP_NOPS.  It does more.  */
+              is not quite the same as STRIP_NOPS.  It does more.  
+              We must also strip off INDIRECT_EXPR for C++ reference
+              parameters.  */
            while (TREE_CODE (arg) == NOP_EXPR
                   || TREE_CODE (arg) == CONVERT_EXPR
-                  || TREE_CODE (arg) == NON_LVALUE_EXPR)
+                  || TREE_CODE (arg) == NON_LVALUE_EXPR
+                  || TREE_CODE (arg) == INDIRECT_REF)
              arg = TREE_OPERAND (arg, 0);
            if (arg != last_parm)
              warning ("second parameter of `va_start' not last named argument");