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re PR c++/55419 (ICE in gimplify_init_ctor_preeval, at gimplify.c:3587) 

PR c++/55419
	PR c++/55753
	* pt.c (tsubst_copy_and_build) [TARGET_EXPR]: Don't touch
	TREE_CONSTANT.

From-SVN: r194872
This commit is contained in:
Jason Merrill 2013-01-03 15:37:28 -05:00 committed by Jason Merrill
parent 7b9ee230c9
commit 1f1c2f93f6
3 changed files with 19 additions and 2 deletions
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5
gcc/cp/ChangeLog
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@ -1,5 +1,10 @@
2013-01-03 Jason Merrill <jason@redhat.com>
PR c++/55419
PR c++/55753
* pt.c (tsubst_copy_and_build) [TARGET_EXPR]: Don't touch
TREE_CONSTANT.
PR c++/55842
* semantics.c (trait_expr_value): Call maybe_instantiate_noexcept.

2
gcc/cp/pt.c
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@ -14119,10 +14119,8 @@ tsubst_copy_and_build (tree t,
case TARGET_EXPR:
/* We can get here for a constant initializer of non-dependent type.
FIXME stop folding in cp_parser_initializer_clause. */
gcc_assert (TREE_CONSTANT (t));
{
tree r = get_target_expr (RECUR (TARGET_EXPR_INITIAL (t)));
TREE_CONSTANT (r) = true;
return r;
}

14
gcc/testsuite/g++.dg/cpp0x/constexpr-ctor12.C Normal file
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@ -0,0 +1,14 @@
// PR c++/55753
// { dg-options -std=c++11 }
template <typename Tp>
struct C {
constexpr C(const Tp& r) { }
};
template <typename Tp>
struct B {
B() {
C<double> cpl = C<double>((true ? 1.0 : C<double>()));
}
};