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-rw-r--r--gcc/cp/ChangeLog6
-rw-r--r--gcc/cp/tree.c6
2 files changed, 11 insertions, 1 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index f4255d6..14fc98f 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2005-10-02 Mark Mitchell <mark@codesourcery.com>
+
+ PR c++/23840
+ * tree.c (lvalue_p1): A VA_ARG_EXPR with class type is an lvalue,
+ when class rvalues are lvalues.
+
2005-09-28 Mark Mitchell <mark@codesourcery.com>
PR c++/16782
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index 9c28f13..954a809 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -158,8 +158,12 @@ lvalue_p_1 (tree ref,
case TARGET_EXPR:
return treat_class_rvalues_as_lvalues ? clk_class : clk_none;
- case CALL_EXPR:
case VA_ARG_EXPR:
+ return (treat_class_rvalues_as_lvalues
+ && CLASS_TYPE_P (TREE_TYPE (ref))
+ ? clk_class : clk_none);
+
+ case CALL_EXPR:
/* Any class-valued call would be wrapped in a TARGET_EXPR. */
return clk_none;