ср, 19 авг. 2020 г. в 14:29, Jonathan Wakely <jwak...@redhat.com>:
<...>
> Do we also want to check
> (std::__is_complete_or_unbounded(__type_identity<_ArgTypes>{}) && ...)
> for invoke_result and the is_invocable traits?
Done.
Changelog:
2020-08-20 Antony Polukhin <antosh...@gmail.com>
PR libstdc/71579
* include/std/type_traits (invoke_result, is_invocable, is_invocable_r)
(is_nothrow_invocable, is_nothrow_invocable_r): Add static_asserts
to make sure that the arguments of the type traits are not misused
with incomplete types.`
* testsuite/20_util/invoke_result/incomplete_args_neg.cc: New test.
* testsuite/20_util/is_invocable/incomplete_args_neg.cc: New test.
* testsuite/20_util/is_invocable/incomplete_neg.cc: New test.
* testsuite/20_util/is_nothrow_invocable/incomplete_args_neg.cc: New test.
* testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc: Check for
error on incomplete response type usage in trait.
--
Best regards,
Antony Polukhin
diff --git a/libstdc++-v3/include/std/type_traits
b/libstdc++-v3/include/std/type_traits
index 6ced781..bf2260a 100644
--- a/libstdc++-v3/include/std/type_traits
+++ b/libstdc++-v3/include/std/type_traits
@@ -2965,6 +2965,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
static_assert(std::__is_complete_or_unbounded(__type_identity<_Functor>{}),
"_Functor must be a complete class or an unbounded array");
+ static_assert((std::__is_complete_or_unbounded(
+ __type_identity<_ArgTypes>{}) && ...),
+ "Argument types must be a complete class or an unbounded array");
};
/// std::invoke_result_t
@@ -2978,6 +2981,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
static_assert(std::__is_complete_or_unbounded(__type_identity<_Fn>{}),
"_Fn must be a complete class or an unbounded array");
+ static_assert((std::__is_complete_or_unbounded(
+ __type_identity<_ArgTypes>{}) && ...),
+ "Argument types must be a complete class or an unbounded array");
};
/// std::is_invocable_r
@@ -2987,6 +2993,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
static_assert(std::__is_complete_or_unbounded(__type_identity<_Fn>{}),
"_Fn must be a complete class or an unbounded array");
+ static_assert((std::__is_complete_or_unbounded(
+ __type_identity<_ArgTypes>{}) && ...),
+ "Argument types must be a complete class or an unbounded array");
+ static_assert(std::__is_complete_or_unbounded(__type_identity<_Ret>{}),
+ "_Ret must be a complete class or an unbounded array");
};
/// std::is_nothrow_invocable
@@ -2997,6 +3008,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
static_assert(std::__is_complete_or_unbounded(__type_identity<_Fn>{}),
"_Fn must be a complete class or an unbounded array");
+ static_assert((std::__is_complete_or_unbounded(
+ __type_identity<_ArgTypes>{}) && ...),
+ "Argument types must be a complete class or an unbounded array");
};
template<typename _Result, typename _Ret, typename = void>
@@ -3017,6 +3031,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
static_assert(std::__is_complete_or_unbounded(__type_identity<_Fn>{}),
"_Fn must be a complete class or an unbounded array");
+ static_assert((std::__is_complete_or_unbounded(
+ __type_identity<_ArgTypes>{}) && ...),
+ "Argument types must be a complete class or an unbounded array");
+ static_assert(std::__is_complete_or_unbounded(__type_identity<_Ret>{}),
+ "_Ret must be a complete class or an unbounded array");
};
/// std::is_invocable_v
diff --git
a/libstdc++-v3/testsuite/20_util/invoke_result/incomplete_args_neg.cc
b/libstdc++-v3/testsuite/20_util/invoke_result/incomplete_args_neg.cc
new file mode 100644
index 0000000..a35ff4c
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/invoke_result/incomplete_args_neg.cc
@@ -0,0 +1,47 @@
+// { dg-do compile { target c++17 } }
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-error "must be a complete class" "" { target *-*-* } 0 }
+
+#include <type_traits>
+
+class X;
+
+void test01()
+{
+ std::invoke_result<int(X), X>(); // { dg-error "required from
here" }
+ std::invoke_result<int(int, X), int, X>(); // { dg-error "required
from here" }
+ std::invoke_result<int(int, X), X, int>(); // { dg-error "required
from here" }
+
+
+ std::invoke_result<int(X&), X&>(); // { dg-bogus "required from
here" }
+ std::invoke_result<int(int, X&), int, X&>(); // { dg-bogus "required
from here" }
+
+ std::invoke_result<int(X&&), X&&>(); // { dg-bogus "required from
here" }
+ std::invoke_result<int(int, X&&), int, X&&>(); // { dg-bogus
"required from here" }
+
+ std::invoke_result<int(const X&&), const X&&>(); // { dg-bogus
"required from here" }
+ std::invoke_result<int(int, const X&&), int, const X&&>(); // {
dg-bogus "required from here" }
+
+ std::invoke_result<int(const X&), const X&>(); // { dg-bogus
"required from here" }
+ std::invoke_result<int(int, const X&), int, const X&>(); // {
dg-bogus "required from here" }
+
+ std::invoke_result<int(const X&), X&>(); // { dg-bogus "required
from here" }
+ std::invoke_result<int(int, const X&), int, X&>(); // { dg-bogus
"required from here" }
+}
diff --git a/libstdc++-v3/testsuite/20_util/is_invocable/incomplete_args_neg.cc
b/libstdc++-v3/testsuite/20_util/is_invocable/incomplete_args_neg.cc
new file mode 100644
index 0000000..a5ce49a
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/is_invocable/incomplete_args_neg.cc
@@ -0,0 +1,70 @@
+// { dg-do compile { target c++17 } }
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-error "must be a complete class" "" { target *-*-* } 0 }
+
+#include <type_traits>
+
+class X;
+
+void test01()
+{
+ std::is_invocable<int(X), X>(); // { dg-error "required from
here" }
+ std::is_invocable<int(int, X), int, X>(); // { dg-error "required
from here" }
+ std::is_invocable<int(int, X), X, int>(); // { dg-error "required
from here" }
+
+
+ std::is_invocable<int(X&), X&>(); // { dg-bogus "required from
here" }
+ std::is_invocable<int(int, X&), int, X&>(); // { dg-bogus "required
from here" }
+
+ std::is_invocable<int(X&&), X&&>(); // { dg-bogus "required from
here" }
+ std::is_invocable<int(int, X&&), int, X&&>(); // { dg-bogus
"required from here" }
+
+ std::is_invocable<int(const X&&), const X&&>(); // { dg-bogus
"required from here" }
+ std::is_invocable<int(int, const X&&), int, const X&&>(); // {
dg-bogus "required from here" }
+
+ std::is_invocable<int(const X&), const X&>(); // { dg-bogus
"required from here" }
+ std::is_invocable<int(int, const X&), int, const X&>(); // {
dg-bogus "required from here" }
+
+ std::is_invocable<int(const X&), X&>(); // { dg-bogus "required
from here" }
+ std::is_invocable<int(int, const X&), int, X&>(); // { dg-bogus
"required from here" }
+}
+
+void test02()
+{
+ std::is_invocable_r<int, int(X), X>(); // { dg-error "required
from here" }
+ std::is_invocable_r<int, int(int, X), int, X>(); // { dg-error
"required from here" }
+ std::is_invocable_r<int, int(int, X), X, int>(); // { dg-error
"required from here" }
+
+
+ std::is_invocable_r<int, int(X&), X&>(); // { dg-bogus "required
from here" }
+ std::is_invocable_r<int, int(int, X&), int, X&>(); // { dg-bogus
"required from here" }
+
+ std::is_invocable_r<int, int(X&&), X&&>(); // { dg-bogus "required
from here" }
+ std::is_invocable_r<int, int(int, X&&), int, X&&>(); // { dg-bogus
"required from here" }
+
+ std::is_invocable_r<int, int(const X&&), const X&&>(); // {
dg-bogus "required from here" }
+ std::is_invocable_r<int, int(int, const X&&), int, const X&&>();
// { dg-bogus "required from here" }
+
+ std::is_invocable_r<int, int(const X&), const X&>(); // { dg-bogus
"required from here" }
+ std::is_invocable_r<int, int(int, const X&), int, const X&>();
// { dg-bogus "required from here" }
+
+ std::is_invocable_r<int, int(const X&), X&>(); // { dg-bogus
"required from here" }
+ std::is_invocable_r<int, int(int, const X&), int, X&>(); // {
dg-bogus "required from here" }
+}
diff --git a/libstdc++-v3/testsuite/20_util/is_invocable/incomplete_neg.cc
b/libstdc++-v3/testsuite/20_util/is_invocable/incomplete_neg.cc
new file mode 100644
index 0000000..3041554
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/is_invocable/incomplete_neg.cc
@@ -0,0 +1,39 @@
+// { dg-do compile { target c++17 } }
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-error "must be a complete class" "" { target *-*-* } 0 }
+
+#include <type_traits>
+
+class X;
+
+void test01()
+{
+ std::is_invocable<X, int>(); // { dg-error "required from here" }
+ std::is_invocable<X>(); // { dg-error "required from here" }
+
+ std::is_invocable_r<int, X, int>(); // { dg-error "required from
here" }
+ std::is_invocable_r<int, X>(); // { dg-error "required from
here" }
+
+ std::is_invocable_r<X, X()>(); // { dg-error "required from
here" }
+ std::is_invocable_r<X, X(int), int>(); // { dg-error "required
from here" }
+ std::is_invocable_r<X, X(int, int), int, int>(); // { dg-error
"required from here" }
+
+ std::is_invocable_r<X, X(), int, int>(); // { dg-error "required
from here" }
+}
diff --git
a/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/incomplete_args_neg.cc
b/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/incomplete_args_neg.cc
new file mode 100644
index 0000000..c60e73b
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/incomplete_args_neg.cc
@@ -0,0 +1,70 @@
+// { dg-do compile { target c++17 } }
+
+// Copyright (C) 2020 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+// { dg-error "must be a complete class" "" { target *-*-* } 0 }
+
+#include <type_traits>
+
+class X;
+
+void test01()
+{
+ std::is_nothrow_invocable<int(X), X>(); // { dg-error "required
from here" }
+ std::is_nothrow_invocable<int(int, X), int, X>(); // { dg-error
"required from here" }
+ std::is_nothrow_invocable<int(int, X), X, int>(); // { dg-error
"required from here" }
+
+
+ std::is_nothrow_invocable<int(X&), X&>(); // { dg-bogus "required
from here" }
+ std::is_nothrow_invocable<int(int, X&), int, X&>(); // { dg-bogus
"required from here" }
+
+ std::is_nothrow_invocable<int(X&&), X&&>(); // { dg-bogus "required
from here" }
+ std::is_nothrow_invocable<int(int, X&&), int, X&&>(); // {
dg-bogus "required from here" }
+
+ std::is_nothrow_invocable<int(const X&&), const X&&>(); // {
dg-bogus "required from here" }
+ std::is_nothrow_invocable<int(int, const X&&), int, const X&&>();
// { dg-bogus "required from here" }
+
+ std::is_nothrow_invocable<int(const X&), const X&>(); // {
dg-bogus "required from here" }
+ std::is_nothrow_invocable<int(int, const X&), int, const X&>();
// { dg-bogus "required from here" }
+
+ std::is_nothrow_invocable<int(const X&), X&>(); // { dg-bogus
"required from here" }
+ std::is_nothrow_invocable<int(int, const X&), int, X&>(); // {
dg-bogus "required from here" }
+}
+
+void test02()
+{
+ std::is_nothrow_invocable_r<int, int(X), X>(); // { dg-error
"required from here" }
+ std::is_nothrow_invocable_r<int, int(int, X), int, X>(); // {
dg-error "required from here" }
+ std::is_nothrow_invocable_r<int, int(int, X), X, int>(); // {
dg-error "required from here" }
+
+
+ std::is_nothrow_invocable_r<int, int(X&), X&>(); // { dg-bogus
"required from here" }
+ std::is_nothrow_invocable_r<int, int(int, X&), int, X&>(); // {
dg-bogus "required from here" }
+
+ std::is_nothrow_invocable_r<int, int(X&&), X&&>(); // { dg-bogus
"required from here" }
+ std::is_nothrow_invocable_r<int, int(int, X&&), int, X&&>(); // {
dg-bogus "required from here" }
+
+ std::is_nothrow_invocable_r<int, int(const X&&), const X&&>();
// { dg-bogus "required from here" }
+ std::is_nothrow_invocable_r<int, int(int, const X&&), int, const X&&>();
// { dg-bogus "required from here" }
+
+ std::is_nothrow_invocable_r<int, int(const X&), const X&>(); // {
dg-bogus "required from here" }
+ std::is_nothrow_invocable_r<int, int(int, const X&), int, const X&>();
// { dg-bogus "required from here" }
+
+ std::is_nothrow_invocable_r<int, int(const X&), X&>(); // {
dg-bogus "required from here" }
+ std::is_nothrow_invocable_r<int, int(int, const X&), int, X&>();
// { dg-bogus "required from here" }
+}
diff --git
a/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc
b/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc
index ad16809..ef87171 100644
--- a/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc
+++ b/libstdc++-v3/testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc
@@ -30,4 +30,10 @@ void test01()
std::is_nothrow_invocable_r<int, X>(); // { dg-error "required
from here" }
std::is_nothrow_invocable_r<int, X, short>(); // { dg-error
"required from here" }
+
+ std::is_nothrow_invocable_r<X, X()>(); // { dg-error "required
from here" }
+ std::is_nothrow_invocable_r<X, X(int), int>(); // { dg-error
"required from here" }
+ std::is_nothrow_invocable_r<X, X(int, int), int, int>(); // {
dg-error "required from here" }
+
+ std::is_nothrow_invocable_r<X, X(), int, int>(); // { dg-error
"required from here" }
}
