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| author | Ken Matsui <kmatsui@gcc.gnu.org> | 2024-02-15 00:48:14 -0800 |
|---|---|---|
| committer | Ken Matsui <kmatsui@gcc.gnu.org> | 2024-05-10 18:17:21 -0700 |
| commit | 85c2ba4244196dcccdf0647ff49f376c52513f65 (patch) | |
| tree | 20531c85d5e797e916a4c5e86c9d78e6af18a704 /gcc | |
| parent | c08d1afbf539a672f28100640d964565ac575ff5 (diff) | |
| download | gcc-85c2ba4244196dcccdf0647ff49f376c52513f65.zip gcc-85c2ba4244196dcccdf0647ff49f376c52513f65.tar.gz gcc-85c2ba4244196dcccdf0647ff49f376c52513f65.tar.bz2 | |
c++: Implement __add_rvalue_reference built-in trait
This patch implements built-in trait for std::add_rvalue_reference.
gcc/cp/ChangeLog:
* cp-trait.def: Define __add_rvalue_reference.
* semantics.cc (finish_trait_type): Handle
CPTK_ADD_RVALUE_REFERENCE.
gcc/testsuite/ChangeLog:
* g++.dg/ext/has-builtin-1.C: Test existence of
__add_rvalue_reference.
* g++.dg/ext/add_rvalue_reference.C: New test.
Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
Reviewed-by: Jason Merrill <jason@redhat.com>
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/cp-trait.def | 1 | ||||
| -rw-r--r-- | gcc/cp/semantics.cc | 6 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/ext/add_rvalue_reference.C | 20 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/ext/has-builtin-1.C | 3 |
4 files changed, 30 insertions, 0 deletions
diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def index 9a27dca..173818a 100644 --- a/gcc/cp/cp-trait.def +++ b/gcc/cp/cp-trait.def @@ -50,6 +50,7 @@ DEFTRAIT_TYPE (ADD_LVALUE_REFERENCE, "__add_lvalue_reference", 1) DEFTRAIT_TYPE (ADD_POINTER, "__add_pointer", 1) +DEFTRAIT_TYPE (ADD_RVALUE_REFERENCE, "__add_rvalue_reference", 1) DEFTRAIT_EXPR (HAS_NOTHROW_ASSIGN, "__has_nothrow_assign", 1) DEFTRAIT_EXPR (HAS_NOTHROW_CONSTRUCTOR, "__has_nothrow_constructor", 1) DEFTRAIT_EXPR (HAS_NOTHROW_COPY, "__has_nothrow_copy", 1) diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc index a6f795d..f6338f7 100644 --- a/gcc/cp/semantics.cc +++ b/gcc/cp/semantics.cc @@ -12940,6 +12940,12 @@ finish_trait_type (cp_trait_kind kind, tree type1, tree type2, } return type1; + case CPTK_ADD_RVALUE_REFERENCE: + /* [meta.trans.ref]. */ + if (referenceable_type_p (type1)) + return cp_build_reference_type (type1, /*rval=*/true); + return type1; + case CPTK_REMOVE_ALL_EXTENTS: return strip_array_types (type1); diff --git a/gcc/testsuite/g++.dg/ext/add_rvalue_reference.C b/gcc/testsuite/g++.dg/ext/add_rvalue_reference.C new file mode 100644 index 0000000..c92fe6b --- /dev/null +++ b/gcc/testsuite/g++.dg/ext/add_rvalue_reference.C @@ -0,0 +1,20 @@ +// { dg-do compile { target c++11 } } + +#define SA(X) static_assert((X),#X) + +class ClassType { }; + +SA(__is_same(__add_rvalue_reference(int), int&&)); +SA(__is_same(__add_rvalue_reference(int&&), int&&)); +SA(__is_same(__add_rvalue_reference(int&), int&)); +SA(__is_same(__add_rvalue_reference(const int), const int&&)); +SA(__is_same(__add_rvalue_reference(int*), int*&&)); +SA(__is_same(__add_rvalue_reference(ClassType&&), ClassType&&)); +SA(__is_same(__add_rvalue_reference(ClassType), ClassType&&)); +SA(__is_same(__add_rvalue_reference(int(int)), int(&&)(int))); +SA(__is_same(__add_rvalue_reference(void), void)); +SA(__is_same(__add_rvalue_reference(const void), const void)); +SA(__is_same(__add_rvalue_reference(bool(int) const), bool(int) const)); +SA(__is_same(__add_rvalue_reference(bool(int) &), bool(int) &)); +SA(__is_same(__add_rvalue_reference(bool(int) const &&), bool(int) const &&)); +SA(__is_same(__add_rvalue_reference(bool(int)), bool(&&)(int))); diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C b/gcc/testsuite/g++.dg/ext/has-builtin-1.C index a8b2f0f..266cb35 100644 --- a/gcc/testsuite/g++.dg/ext/has-builtin-1.C +++ b/gcc/testsuite/g++.dg/ext/has-builtin-1.C @@ -8,6 +8,9 @@ #if !__has_builtin (__add_pointer) # error "__has_builtin (__add_pointer) failed" #endif +#if !__has_builtin (__add_rvalue_reference) +# error "__has_builtin (__add_rvalue_reference) failed" +#endif #if !__has_builtin (__builtin_addressof) # error "__has_builtin (__builtin_addressof) failed" #endif |