From: Marek Polacek <polacek@redhat.com>
To: Jason Merrill <jason@redhat.com>, GCC Patches <gcc-patches@gcc.gnu.org>
Subject: [PATCH] c++: __has_builtin gives the wrong answer [PR106759]
Date: Mon, 29 Aug 2022 17:26:03 -0400 [thread overview]
Message-ID: <20220829212603.632168-1-polacek@redhat.com> (raw)
We've supported __is_nothrow_constructible since r11-4386, but
names_builtin_p didn't know about it, so it gave the wrong answer for
#if __has_builtin(__is_nothrow_constructible)
...
#endif
I've tested all C++-only built-ins and only two were missing.
Bootstrapped/regtested on x86_64-pc-linux-gnu, ok for trunk?
PR c++/106759
gcc/cp/ChangeLog:
* cp-objcp-common.cc (names_builtin_p): Handle RID_IS_NOTHROW_ASSIGNABLE
and RID_IS_NOTHROW_CONSTRUCTIBLE.
gcc/testsuite/ChangeLog:
* g++.dg/ext/has-builtin-1.C: New test.
---
gcc/cp/cp-objcp-common.cc | 2 +
gcc/testsuite/g++.dg/ext/has-builtin-1.C | 133 +++++++++++++++++++++++
2 files changed, 135 insertions(+)
create mode 100644 gcc/testsuite/g++.dg/ext/has-builtin-1.C
diff --git a/gcc/cp/cp-objcp-common.cc b/gcc/cp/cp-objcp-common.cc
index 4079a4b4aec..1ffac08c32f 100644
--- a/gcc/cp/cp-objcp-common.cc
+++ b/gcc/cp/cp-objcp-common.cc
@@ -460,6 +460,8 @@ names_builtin_p (const char *name)
case RID_IS_UNION:
case RID_IS_ASSIGNABLE:
case RID_IS_CONSTRUCTIBLE:
+ case RID_IS_NOTHROW_ASSIGNABLE:
+ case RID_IS_NOTHROW_CONSTRUCTIBLE:
case RID_UNDERLYING_TYPE:
case RID_REF_CONSTRUCTS_FROM_TEMPORARY:
case RID_REF_CONVERTS_FROM_TEMPORARY:
diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
new file mode 100644
index 00000000000..fe25cb2f669
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
@@ -0,0 +1,133 @@
+// PR c++/106759
+// { dg-do compile }
+// Verify that __has_builtin gives the correct answer for C++ built-ins.
+
+#if !__has_builtin (__builtin_addressof)
+# error "__has_builtin (__builtin_addressof) failed"
+#endif
+#if !__has_builtin (__builtin_bit_cast)
+# error "__has_builtin (__builtin_bit_cast) failed"
+#endif
+#if !__has_builtin (__builtin_launder)
+# error "__has_builtin (__builtin_launder) failed"
+#endif
+#if !__has_builtin (__has_nothrow_assign)
+# error "__has_builtin (__has_nothrow_assign) failed"
+#endif
+#if !__has_builtin (__has_nothrow_constructor)
+# error "__has_builtin (__has_nothrow_constructor) failed"
+#endif
+#if !__has_builtin (__has_nothrow_copy)
+# error "__has_builtin (__has_nothrow_copy) failed"
+#endif
+#if !__has_builtin (__has_trivial_assign)
+# error "__has_builtin (__has_trivial_assign) failed"
+#endif
+#if !__has_builtin (__has_trivial_constructor)
+# error "__has_builtin (__has_trivial_constructor) failed"
+#endif
+#if !__has_builtin (__has_trivial_copy)
+# error "__has_builtin (__has_trivial_copy) failed"
+#endif
+#if !__has_builtin (__has_trivial_destructor)
+# error "__has_builtin (__has_trivial_destructor) failed"
+#endif
+#if !__has_builtin (__has_unique_object_representations)
+# error "__has_builtin (__has_unique_object_representations) failed"
+#endif
+#if !__has_builtin (__has_virtual_destructor)
+# error "__has_builtin (__has_virtual_destructor) failed"
+#endif
+#if !__has_builtin (__is_abstract)
+# error "__has_builtin (__is_abstract) failed"
+#endif
+#if !__has_builtin (__is_aggregate)
+# error "__has_builtin (__is_aggregate) failed"
+#endif
+#if !__has_builtin (__is_base_of)
+# error "__has_builtin (__is_base_of) failed"
+#endif
+#if !__has_builtin (__is_class)
+# error "__has_builtin (__is_class) failed"
+#endif
+#if !__has_builtin (__is_empty)
+# error "__has_builtin (__is_empty) failed"
+#endif
+#if !__has_builtin (__is_enum)
+# error "__has_builtin (__is_enum) failed"
+#endif
+#if !__has_builtin (__is_final)
+# error "__has_builtin (__is_final) failed"
+#endif
+#if !__has_builtin (__is_layout_compatible)
+# error "__has_builtin (__is_layout_compatible) failed"
+#endif
+#if !__has_builtin (__is_literal_type)
+# error "__has_builtin (__is_literal_type) failed"
+#endif
+#if !__has_builtin (__is_pointer_interconvertible_base_of)
+# error "__has_builtin (__is_pointer_interconvertible_base_of) failed"
+#endif
+#if !__has_builtin (__is_pod)
+# error "__has_builtin (__is_pod) failed"
+#endif
+#if !__has_builtin (__is_polymorphic)
+# error "__has_builtin (__is_polymorphic) failed"
+#endif
+#if !__has_builtin (__is_same)
+# error "__has_builtin (__is_same) failed"
+#endif
+#if !__has_builtin (__is_same_as)
+# error "__has_builtin (__is_same_as) failed"
+#endif
+#if !__has_builtin (__is_standard_layout)
+# error "__has_builtin (__is_standard_layout) failed"
+#endif
+#if !__has_builtin (__is_trivial)
+# error "__has_builtin (__is_trivial) failed"
+#endif
+#if !__has_builtin (__is_trivially_assignable)
+# error "__has_builtin (__is_trivially_assignable) failed"
+#endif
+#if !__has_builtin (__is_trivially_constructible)
+# error "__has_builtin (__is_trivially_constructible) failed"
+#endif
+#if !__has_builtin (__is_trivially_copyable)
+# error "__has_builtin (__is_trivially_copyable) failed"
+#endif
+#if !__has_builtin (__is_union)
+# error "__has_builtin (__is_union) failed"
+#endif
+#if !__has_builtin (__underlying_type)
+# error "__has_builtin (__underlying_type) failed"
+#endif
+#if !__has_builtin (__is_assignable)
+# error "__has_builtin (__is_assignable) failed"
+#endif
+#if !__has_builtin (__is_constructible)
+# error "__has_builtin (__is_constructible) failed"
+#endif
+#if !__has_builtin (__is_nothrow_assignable)
+# error "__has_builtin (__is_nothrow_assignable) failed"
+#endif
+#if !__has_builtin (__is_nothrow_constructible)
+# error "__has_builtin (__is_nothrow_constructible) failed"
+#endif
+#if !__has_builtin (__reference_constructs_from_temporary)
+# error "__has_builtin (__reference_constructs_from_temporary) failed"
+#endif
+#if !__has_builtin (__reference_converts_from_temporary)
+# error "__has_builtin (__reference_converts_from_temporary) failed"
+#endif
+#if !__has_builtin (__builtin_is_constant_evaluated)
+# error "__has_builtin (__builtin_is_constant_evaluated) failed"
+#endif
+#if !__has_builtin (__builtin_source_location)
+# error "__has_builtin (__builtin_source_location) failed"
+#endif
+#if !__has_builtin (__builtin_is_corresponding_member)
+# error "__has_builtin (__builtin_is_corresponding_member) failed"
+#endif
+#if !__has_builtin (__builtin_is_pointer_interconvertible_with_class)
+# error "__has_builtin (__builtin_is_pointer_interconvertible_with_class) failed"
+#endif
base-commit: b504149d2c92ddfcfab62ea6d1ed49ae72493e38
--
2.37.2
next reply other threads:[~2022-08-29 21:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-29 21:26 Marek Polacek [this message]
2022-08-30 3:33 ` Jason Merrill
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