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123 lines
3.5 KiB
123 lines
3.5 KiB
// RUN: %clang_cc1 %s -triple=i686-apple-darwin9 -verify -DVERIFY
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// RUN: %clang_cc1 %s -E -triple=i686-apple-darwin9
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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(__builtin_types_compatible_p)
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#error Clang should have these
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#endif
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// These are C++-only builtins.
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#if __has_builtin(__array_rank) || \
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__has_builtin(__underlying_type) || \
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__has_builtin(__is_trivial)
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#error Clang should not have these 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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#if !__has_feature(__attribute_deprecated_with_message__)
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#error Feature name in double underscores does not work
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#endif
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// Make sure we have x86 builtins only (forced with target triple).
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#if !__has_builtin(__builtin_ia32_emms) || \
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__has_builtin(__builtin_altivec_abs_v4sf)
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#error Broken handling of target-specific builtins
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#endif
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// Macro expansion does not occur in the parameter to __has_builtin,
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// __has_feature, etc. (as is also expected behaviour for ordinary
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// macros), so the following should not expand:
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#define MY_ALIAS_BUILTIN __c11_atomic_init
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#define MY_ALIAS_FEATURE attribute_overloadable
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#if __has_builtin(MY_ALIAS_BUILTIN) || __has_feature(MY_ALIAS_FEATURE)
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#error Alias expansion not allowed
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#endif
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// But deferring should expand:
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#define HAS_BUILTIN(X) __has_builtin(X)
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#define HAS_FEATURE(X) __has_feature(X)
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#if !HAS_BUILTIN(MY_ALIAS_BUILTIN) || !HAS_FEATURE(MY_ALIAS_FEATURE)
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#error Expansion should have occurred
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#endif
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#ifdef VERIFY
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// expected-error@+1 {{builtin feature check macro requires a parenthesized identifier}}
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#if __has_feature('x')
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#endif
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// The following are not identifiers:
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_Static_assert(!__is_identifier("string"), "oops");
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_Static_assert(!__is_identifier('c'), "oops");
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_Static_assert(!__is_identifier(123), "oops");
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_Static_assert(!__is_identifier(int), "oops");
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// The following are:
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_Static_assert(__is_identifier(abc /* comment */), "oops");
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_Static_assert(__is_identifier /* comment */ (xyz), "oops");
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// expected-error@+1 {{too few arguments}}
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#if __is_identifier()
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#endif
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// expected-error@+1 {{too many arguments}}
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#if __is_identifier(,())
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#endif
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// expected-error@+1 {{missing ')' after 'abc'}}
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#if __is_identifier(abc xyz) // expected-note {{to match this '('}}
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#endif
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// expected-error@+1 {{missing ')' after 'abc'}}
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#if __is_identifier(abc()) // expected-note {{to match this '('}}
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#endif
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// expected-error@+1 {{missing ')' after '.'}}
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#if __is_identifier(.abc) // expected-note {{to match this '('}}
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#endif
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// expected-error@+1 {{nested parentheses not permitted in '__is_identifier'}}
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#if __is_identifier((abc))
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#endif
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// expected-error@+1 {{missing '(' after '__is_identifier'}} expected-error@+1 {{expected value}}
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#if __is_identifier
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#endif
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// expected-error@+1 {{unterminated}} expected-error@+1 {{expected value}}
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#if __is_identifier(
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#endif
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#endif
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