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
