@@ -3751,6 +3751,9 @@ diagnose_trait_expr (tree expr, tree args)
case CPTK_IS_UNION:
inform (loc, " %qT is not a union", t1);
break;
+ case CPTK_IS_SCALAR:
+ inform (loc, " %qT is not a scalar type", t1);
+ break;
case CPTK_IS_AGGREGATE:
inform (loc, " %qT is not an aggregate", t1);
break;
@@ -82,6 +82,7 @@ DEFTRAIT_EXPR (IS_TRIVIALLY_ASSIGNABLE, "__is_trivially_assignable", 2)
DEFTRAIT_EXPR (IS_TRIVIALLY_CONSTRUCTIBLE, "__is_trivially_constructible", -1)
DEFTRAIT_EXPR (IS_TRIVIALLY_COPYABLE, "__is_trivially_copyable", 1)
DEFTRAIT_EXPR (IS_UNION, "__is_union", 1)
+DEFTRAIT_EXPR (IS_SCALAR, "__is_scalar", 1)
DEFTRAIT_EXPR (REF_CONSTRUCTS_FROM_TEMPORARY, "__reference_constructs_from_temporary", 2)
DEFTRAIT_EXPR (REF_CONVERTS_FROM_TEMPORARY, "__reference_converts_from_temporary", 2)
/* FIXME Added space to avoid direct usage in GCC 13. */
@@ -12118,6 +12118,9 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2)
case CPTK_IS_UNION:
return type_code1 == UNION_TYPE;
+ case CPTK_IS_SCALAR:
+ return SCALAR_TYPE_P (type1);
+
case CPTK_IS_ASSIGNABLE:
return is_xible (MODIFY_EXPR, type1, type2);
@@ -12296,6 +12299,7 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2)
case CPTK_IS_ENUM:
case CPTK_IS_UNION:
case CPTK_IS_SAME:
+ case CPTK_IS_SCALAR:
break;
case CPTK_IS_LAYOUT_COMPATIBLE:
@@ -146,3 +146,6 @@
#if !__has_builtin (__remove_cvref)
# error "__has_builtin (__remove_cvref) failed"
#endif
+#if !__has_builtin (__is_scalar)
+# error "__has_builtin (__is_scalar) failed"
+#endif
new file mode 100644
@@ -0,0 +1,31 @@
+// { dg-do compile { target c++11 } }
+
+#include <cstddef> // std::nullptr_t
+#include <testsuite_tr1.h>
+
+using namespace __gnu_test;
+
+#define SA(X) static_assert((X),#X)
+
+#define SA_TEST_CATEGORY(TRAIT, TYPE, EXPECT) \
+ SA(TRAIT(TYPE) == EXPECT); \
+ SA(TRAIT(const TYPE) == EXPECT); \
+ SA(TRAIT(volatile TYPE) == EXPECT); \
+ SA(TRAIT(const volatile TYPE) == EXPECT)
+
+// volatile return type would cause a warning.
+#define SA_FN_TEST_CATEGORY(TRAIT, TYPE, EXPECT) \
+ SA(TRAIT(TYPE) == EXPECT); \
+ SA(TRAIT(const TYPE) == EXPECT)
+
+SA_TEST_CATEGORY(__is_scalar, int, true);
+SA_TEST_CATEGORY(__is_scalar, float, true);
+SA_TEST_CATEGORY(__is_scalar, EnumType, true);
+SA_TEST_CATEGORY(__is_scalar, int*, true);
+SA_FN_TEST_CATEGORY(__is_scalar, int(*)(int), true);
+SA_TEST_CATEGORY(__is_scalar, int (ClassType::*), true);
+SA_FN_TEST_CATEGORY(__is_scalar, int (ClassType::*) (int), true);
+SA_TEST_CATEGORY(__is_scalar, std::nullptr_t, true);
+
+// Sanity check.
+SA_TEST_CATEGORY(__is_scalar, ClassType, false);
@@ -225,7 +225,7 @@ namespace std __attribute__ ((__visibility__ ("default"))) {
: public __traitor<__is_void<_Tp>, __is_arithmetic<_Tp> >
{ };
template<typename _Tp>
- struct __is_scalar
+ struct ____is_scalar
: public __traitor<__is_arithmetic<_Tp>, __is_pointer<_Tp> >
{ };
template<typename _Tp>
@@ -1325,7 +1325,7 @@ namespace std __attribute__ ((__visibility__ ("default"))) {
}
template<typename _ForwardIterator, typename _Tp>
inline typename
- __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, void>::__type
+ __gnu_cxx::__enable_if<!____is_scalar<_Tp>::__value, void>::__type
__fill_a(_ForwardIterator __first, _ForwardIterator __last,
const _Tp& __value)
{
@@ -1334,7 +1334,7 @@ namespace std __attribute__ ((__visibility__ ("default"))) {
}
template<typename _ForwardIterator, typename _Tp>
inline typename
- __gnu_cxx::__enable_if<__is_scalar<_Tp>::__value, void>::__type
+ __gnu_cxx::__enable_if<____is_scalar<_Tp>::__value, void>::__type
__fill_a(_ForwardIterator __first, _ForwardIterator __last,
const _Tp& __value)
{
@@ -1362,7 +1362,7 @@ namespace std __attribute__ ((__visibility__ ("default"))) {
}
template<typename _OutputIterator, typename _Size, typename _Tp>
inline typename
- __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, _OutputIterator>::__type
+ __gnu_cxx::__enable_if<!____is_scalar<_Tp>::__value, _OutputIterator>::__type
__fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value)
{
for (; __n > 0; --__n, ++__first)
@@ -1371,7 +1371,7 @@ namespace std __attribute__ ((__visibility__ ("default"))) {
}
template<typename _OutputIterator, typename _Size, typename _Tp>
inline typename
- __gnu_cxx::__enable_if<__is_scalar<_Tp>::__value, _OutputIterator>::__type
+ __gnu_cxx::__enable_if<____is_scalar<_Tp>::__value, _OutputIterator>::__type
__fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value)
{
const _Tp __tmp = __value;
@@ -27,7 +27,7 @@ namespace std __attribute__ ((__visibility__ ("default"))) {
};
template<typename _Tp> struct __is_arithmetic : public __traitor<__is_integer<_Tp>, __is_floating<_Tp> > {
};
- template<typename _Tp> struct __is_scalar : public __traitor<__is_arithmetic<_Tp>, __is_pointer<_Tp> > {
+ template<typename _Tp> struct ____is_scalar : public __traitor<__is_arithmetic<_Tp>, __is_pointer<_Tp> > {
};
}
namespace __gnu_cxx __attribute__ ((__visibility__ ("default"))) {
@@ -54,7 +54,7 @@ namespace std __attribute__ ((__visibility__ ("default"))) {
};
template<typename _Iterator> inline typename _Niter_base<_Iterator>::iterator_type __niter_base(_Iterator __it) {
}
- template<typename _OutputIterator, typename _Size, typename _Tp> inline typename __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, _OutputIterator>::__type __fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value) {
+ template<typename _OutputIterator, typename _Size, typename _Tp> inline typename __gnu_cxx::__enable_if<!____is_scalar<_Tp>::__value, _OutputIterator>::__type __fill_n_a(_OutputIterator __first, _Size __n, const _Tp& __value) {
for (__decltype(__n + 0) __niter = __n;
__niter > 0;
--__niter, ++__first) *__first = __value;
@@ -389,7 +389,7 @@ __INT_N(__GLIBCXX_TYPE_INT_N_3)
// A scalar type is an arithmetic type or a pointer type
//
template<typename _Tp>
- struct __is_scalar
+ struct ____is_scalar
: public __traitor<__is_arithmetic<_Tp>, __is_pointer<_Tp> >
{ };
@@ -911,7 +911,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
template<typename _ForwardIterator, typename _Tp>
_GLIBCXX20_CONSTEXPR
inline typename
- __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, void>::__type
+ __gnu_cxx::__enable_if<!____is_scalar<_Tp>::__value, void>::__type
__fill_a1(_ForwardIterator __first, _ForwardIterator __last,
const _Tp& __value)
{
@@ -922,7 +922,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
template<typename _ForwardIterator, typename _Tp>
_GLIBCXX20_CONSTEXPR
inline typename
- __gnu_cxx::__enable_if<__is_scalar<_Tp>::__value, void>::__type
+ __gnu_cxx::__enable_if<____is_scalar<_Tp>::__value, void>::__type
__fill_a1(_ForwardIterator __first, _ForwardIterator __last,
const _Tp& __value)
{
@@ -1060,7 +1060,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
template<typename _OutputIterator, typename _Size, typename _Tp>
_GLIBCXX20_CONSTEXPR
inline typename
- __gnu_cxx::__enable_if<!__is_scalar<_Tp>::__value, _OutputIterator>::__type
+ __gnu_cxx::__enable_if<!____is_scalar<_Tp>::__value, _OutputIterator>::__type
__fill_n_a1(_OutputIterator __first, _Size __n, const _Tp& __value)
{
for (; __n > 0; --__n, (void) ++__first)
@@ -1071,7 +1071,7 @@ _GLIBCXX_END_NAMESPACE_CONTAINER
template<typename _OutputIterator, typename _Size, typename _Tp>
_GLIBCXX20_CONSTEXPR
inline typename
- __gnu_cxx::__enable_if<__is_scalar<_Tp>::__value, _OutputIterator>::__type
+ __gnu_cxx::__enable_if<____is_scalar<_Tp>::__value, _OutputIterator>::__type
__fill_n_a1(_OutputIterator __first, _Size __n, const _Tp& __value)
{
const _Tp __tmp = __value;
@@ -90,7 +90,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
inline void
__valarray_default_construct(_Tp* __b, _Tp* __e)
{
- _Array_default_ctor<_Tp, __is_scalar<_Tp>::__value>::_S_do_it(__b, __e);
+ _Array_default_ctor<_Tp, ____is_scalar<_Tp>::__value>::_S_do_it(__b, __e);
}
// Turn a raw-memory into an array of _Tp filled with __t