1// RUN: %clang_cc1 %s -triple=i686-apple-darwin9 -verify -DVERIFY
2// RUN: %clang_cc1 %s -E -triple=i686-apple-darwin9
3#ifndef __has_feature
4#error Should have __has_feature
5#endif
6
7
8#if __has_feature(something_we_dont_have)
9#error Bad
10#endif
11
12#if  !__has_builtin(__builtin_huge_val) || \
13     !__has_builtin(__builtin_shufflevector) || \
14     !__has_builtin(__builtin_convertvector) || \
15     !__has_builtin(__builtin_trap) || \
16     !__has_builtin(__c11_atomic_init) || \
17     !__has_feature(attribute_analyzer_noreturn) || \
18     !__has_feature(attribute_overloadable)
19#error Clang should have these
20#endif
21
22#if __has_builtin(__builtin_insanity)
23#error Clang should not have this
24#endif
25
26#if !__has_feature(__attribute_deprecated_with_message__)
27#error Feature name in double underscores does not work
28#endif
29
30// Make sure we have x86 builtins only (forced with target triple).
31
32#if !__has_builtin(__builtin_ia32_emms) || \
33    __has_builtin(__builtin_altivec_abs_v4sf)
34#error Broken handling of target-specific builtins
35#endif
36
37// Macro expansion does not occur in the parameter to __has_builtin,
38// __has_feature, etc. (as is also expected behaviour for ordinary
39// macros), so the following should not expand:
40
41#define MY_ALIAS_BUILTIN __c11_atomic_init
42#define MY_ALIAS_FEATURE attribute_overloadable
43
44#if __has_builtin(MY_ALIAS_BUILTIN) || __has_feature(MY_ALIAS_FEATURE)
45#error Alias expansion not allowed
46#endif
47
48// But deferring should expand:
49
50#define HAS_BUILTIN(X) __has_builtin(X)
51#define HAS_FEATURE(X) __has_feature(X)
52
53#if !HAS_BUILTIN(MY_ALIAS_BUILTIN) || !HAS_FEATURE(MY_ALIAS_FEATURE)
54#error Expansion should have occurred
55#endif
56
57#ifdef VERIFY
58// expected-error@+1 {{builtin feature check macro requires a parenthesized identifier}}
59#if __has_feature('x')
60#endif
61
62// The following are not identifiers:
63_Static_assert(!__is_identifier("string"), "oops");
64_Static_assert(!__is_identifier('c'), "oops");
65_Static_assert(!__is_identifier(123), "oops");
66_Static_assert(!__is_identifier(int), "oops");
67
68// The following are:
69_Static_assert(__is_identifier(abc /* comment */), "oops");
70_Static_assert(__is_identifier /* comment */ (xyz), "oops");
71
72// expected-error@+1 {{too few arguments}}
73#if __is_identifier()
74#endif
75
76// expected-error@+1 {{too many arguments}}
77#if __is_identifier(,())
78#endif
79
80// expected-error@+1 {{missing ')' after 'abc'}}
81#if __is_identifier(abc xyz) // expected-note {{to match this '('}}
82#endif
83
84// expected-error@+1 {{missing ')' after 'abc'}}
85#if __is_identifier(abc())   // expected-note {{to match this '('}}
86#endif
87
88// expected-error@+1 {{missing ')' after '.'}}
89#if __is_identifier(.abc)    // expected-note {{to match this '('}}
90#endif
91
92// expected-error@+1 {{nested parentheses not permitted in '__is_identifier'}}
93#if __is_identifier((abc))
94#endif
95
96// expected-error@+1 {{missing '(' after '__is_identifier'}} expected-error@+1 {{expected value}}
97#if __is_identifier
98#endif
99
100// expected-error@+1 {{unterminated}} expected-error@+1 {{expected value}}
101#if __is_identifier(
102#endif
103
104#endif
105