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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2023-12-06 21:33:11 -0800 |
|---|---|---|
| committer | Jason Merrill <jason@redhat.com> | 2023-12-10 13:11:23 -0500 |
| commit | 5bca9af579a06bbf7160613f948ecf2092299437 (patch) | |
| tree | d7ba523551e6af7a45b724b21655e6fa0861906e /gcc/cp | |
| parent | f4007cb78e428c7a82b85b7c1c4104946b98c933 (diff) | |
| download | gcc-5bca9af579a06bbf7160613f948ecf2092299437.zip gcc-5bca9af579a06bbf7160613f948ecf2092299437.tar.gz gcc-5bca9af579a06bbf7160613f948ecf2092299437.tar.bz2 | |
c++: Implement __is_reference built-in trait
This patch implements built-in trait for std::is_reference.
gcc/cp/ChangeLog:
* cp-trait.def: Define __is_reference.
* constraint.cc (diagnose_trait_expr): Handle CPTK_IS_REFERENCE.
* semantics.cc (trait_expr_value): Likewise.
(finish_trait_expr): Likewise.
gcc/testsuite/ChangeLog:
* g++.dg/ext/has-builtin-1.C: Test existence of __is_reference.
* g++.dg/ext/is_reference.C: New test.
Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
Diffstat (limited to 'gcc/cp')
| -rw-r--r-- | gcc/cp/constraint.cc | 3 | ||||
| -rw-r--r-- | gcc/cp/cp-trait.def | 1 | ||||
| -rw-r--r-- | gcc/cp/semantics.cc | 4 |
3 files changed, 8 insertions, 0 deletions
diff --git a/gcc/cp/constraint.cc b/gcc/cp/constraint.cc index 204b998..aa42017 100644 --- a/gcc/cp/constraint.cc +++ b/gcc/cp/constraint.cc @@ -3789,6 +3789,9 @@ diagnose_trait_expr (tree expr, tree args) case CPTK_IS_POLYMORPHIC: inform (loc, " %qT is not a polymorphic type", t1); break; + case CPTK_IS_REFERENCE: + inform (loc, " %qT is not a reference", t1); + break; case CPTK_IS_SAME: inform (loc, " %qT is not the same as %qT", t1, t2); break; diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def index f5efffd..2d82ed3 100644 --- a/gcc/cp/cp-trait.def +++ b/gcc/cp/cp-trait.def @@ -80,6 +80,7 @@ DEFTRAIT_EXPR (IS_NOTHROW_CONVERTIBLE, "__is_nothrow_convertible", 2) DEFTRAIT_EXPR (IS_POINTER_INTERCONVERTIBLE_BASE_OF, "__is_pointer_interconvertible_base_of", 2) DEFTRAIT_EXPR (IS_POD, "__is_pod", 1) DEFTRAIT_EXPR (IS_POLYMORPHIC, "__is_polymorphic", 1) +DEFTRAIT_EXPR (IS_REFERENCE, "__is_reference", 1) DEFTRAIT_EXPR (IS_SAME, "__is_same", 2) DEFTRAIT_EXPR (IS_SCOPED_ENUM, "__is_scoped_enum", 1) DEFTRAIT_EXPR (IS_STD_LAYOUT, "__is_standard_layout", 1) diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc index 5478c4b..4af5a60 100644 --- a/gcc/cp/semantics.cc +++ b/gcc/cp/semantics.cc @@ -12452,6 +12452,9 @@ trait_expr_value (cp_trait_kind kind, tree type1, tree type2) case CPTK_IS_POLYMORPHIC: return CLASS_TYPE_P (type1) && TYPE_POLYMORPHIC_P (type1); + case CPTK_IS_REFERENCE: + return type_code1 == REFERENCE_TYPE; + case CPTK_IS_SAME: return same_type_p (type1, type2); @@ -12639,6 +12642,7 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2) case CPTK_IS_MEMBER_FUNCTION_POINTER: case CPTK_IS_MEMBER_OBJECT_POINTER: case CPTK_IS_MEMBER_POINTER: + case CPTK_IS_REFERENCE: case CPTK_IS_SAME: case CPTK_IS_SCOPED_ENUM: case CPTK_IS_UNION: |