dac3ea4eb3
Summary: Previously __has_builtin(__builtin_*) would return false for __builtin_*s that we modeled as keywords rather than as functions (because they take type arguments). With this patch, all builtins that are called with function-call-like syntax return true from __has_builtin (covering __builtin_* and also the __is_* and __has_* type traits and the handful of similar builtins without such a prefix). Update the documentation on __has_builtin and on type traits to match. While doing this I noticed the type trait documentation was out of date and incomplete; that's fixed here too. Reviewers: aaron.ballman Subscribers: jfb, kristina, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D66100 llvm-svn: 368785
44 lines
1.3 KiB
C++
44 lines
1.3 KiB
C++
// RUN: %clang_cc1 %s -triple=i686-apple-darwin9 -verify -DVERIFY
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// expected-no-diagnostics
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#ifndef __has_feature
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#error Should have __has_feature
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#endif
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#if __has_feature(something_we_dont_have)
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#error Bad
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#endif
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#if !__has_builtin(__builtin_huge_val) || \
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!__has_builtin(__builtin_shufflevector) || \
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!__has_builtin(__builtin_convertvector) || \
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!__has_builtin(__builtin_trap) || \
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!__has_builtin(__c11_atomic_init) || \
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!__has_builtin(__builtin_launder) || \
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!__has_feature(attribute_analyzer_noreturn) || \
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!__has_feature(attribute_overloadable)
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#error Clang should have these
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#endif
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// These are technically implemented as keywords, but __has_builtin should
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// still return true.
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#if !__has_builtin(__builtin_LINE) || \
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!__has_builtin(__builtin_FILE) || \
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!__has_builtin(__builtin_FUNCTION) || \
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!__has_builtin(__builtin_COLUMN) || \
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!__has_builtin(__array_rank) || \
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!__has_builtin(__underlying_type) || \
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!__has_builtin(__is_trivial) || \
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!__has_builtin(__has_unique_object_representations)
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#error Clang should have these
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#endif
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// This is a C-only builtin.
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#if __has_builtin(__builtin_types_compatible_p)
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#error Clang should not have this in C++ mode
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#endif
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#if __has_builtin(__builtin_insanity)
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#error Clang should not have this
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#endif
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