While working on the latest 52748 patch, it occurred to me that using
tsubst_expr for DECLTYPE_TYPE is wrong, since that function deals with
statements; since we only have to deal with expressions there,
tsubst_copy_and_build is a better choice.
Tested x86_64-pc-linux-gnu, applying to trunk.
commit b48d4d61ceffc2989f0ea1e32ca6e9cc41923b9c
Author: Jason Merrill <ja...@redhat.com>
Date: Sun Apr 14 16:41:27 2013 +0200
* pt.c (tsubst) [DECLTYPE_TYPE]: Use tsubst_copy_and_build.
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index ba386a2..411ca55 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -11770,9 +11770,10 @@ tsubst (tree t, tree args, tsubst_flags_t complain, tree in_decl)
++cp_unevaluated_operand;
++c_inhibit_evaluation_warnings;
- type = tsubst_expr (DECLTYPE_TYPE_EXPR (t), args,
- complain|tf_decltype, in_decl,
- /*integral_constant_expression_p=*/false);
+ type = tsubst_copy_and_build (DECLTYPE_TYPE_EXPR (t), args,
+ complain|tf_decltype, in_decl,
+ /*function_p*/false,
+ /*integral_constant_expression*/false);
--cp_unevaluated_operand;
--c_inhibit_evaluation_warnings;
