1 // RUN: %clang_cc1 -ffreestanding -Eonly -verify %s 2 3 // Try different path permutations of __has_include with existing file. 4 #if __has_include("stdint.h") 5 #else 6 #error "__has_include failed (1)." 7 #endif 8 9 #if __has_include(<stdint.h>) 10 #else 11 #error "__has_include failed (2)." 12 #endif 13 14 // Try unary expression. 15 #if !__has_include("stdint.h") 16 #error "__has_include failed (5)." 17 #endif 18 19 // Try binary expression. 20 #if __has_include("stdint.h") && __has_include("stddef.h") 21 #else 22 #error "__has_include failed (6)." 23 #endif 24 25 // Try non-existing file. 26 #if __has_include("blahblah.h") 27 #error "__has_include failed (7)." 28 #endif 29 30 // Try defined. 31 #if !defined(__has_include) 32 #error "defined(__has_include) failed (8)." 33 #endif 34 35 // Try different path permutations of __has_include_next with existing file. 36 #if __has_include_next("stddef.h") // expected-warning {{#include_next in primary source file}} 37 #else 38 #error "__has_include failed (1)." 39 #endif 40 41 #if __has_include_next(<stddef.h>) // expected-warning {{#include_next in primary source file}} 42 #else 43 #error "__has_include failed (2)." 44 #endif 45 46 // Try unary expression. 47 #if !__has_include_next("stdint.h") // expected-warning {{#include_next in primary source file}} 48 #error "__has_include_next failed (5)." 49 #endif 50 51 // Try binary expression. 52 #if __has_include_next("stdint.h") && __has_include("stddef.h") // expected-warning {{#include_next in primary source file}} 53 #else 54 #error "__has_include_next failed (6)." 55 #endif 56 57 // Try non-existing file. 58 #if __has_include_next("blahblah.h") // expected-warning {{#include_next in primary source file}} 59 #error "__has_include_next failed (7)." 60 #endif 61 62 // Try defined. 63 #if !defined(__has_include_next) 64 #error "defined(__has_include_next) failed (8)." 65 #endif 66 67 // Fun with macros 68 #define MACRO1 __has_include(<stdint.h>) 69 #define MACRO2 ("stdint.h") 70 #define MACRO3 ("blahblah.h") 71 #define MACRO4 blahblah.h>) 72 #define MACRO5 <stdint.h> 73 74 #if !MACRO1 75 #error "__has_include with macro failed (1)." 76 #endif 77 78 #if !__has_include MACRO2 79 #error "__has_include with macro failed (2)." 80 #endif 81 82 #if __has_include MACRO3 83 #error "__has_include with macro failed (3)." 84 #endif 85 86 #if __has_include(<MACRO4 87 #error "__has_include with macro failed (4)." 88 #endif 89 90 #if !__has_include(MACRO5) 91 #error "__has_include with macro failed (2)." 92 #endif 93 94 // Try as non-preprocessor directives 95 void foo( void ) { 96 __has_include_next("stdint.h") // expected-warning {{#include_next in primary source file}} expected-error {{__has_include_next must be used within a preprocessing directive}} 97 __has_include("stdint.h") // expected-error {{__has_include must be used within a preprocessing directive}} 98 } 99 100 MACRO1 // expected-error {{__has_include must be used within a preprocessing directive}} 101 102 #if 1 103 MACRO1 // expected-error {{__has_include must be used within a preprocessing directive}} 104 #endif 105 106 #if 0 107 #elif 1 108 MACRO1 // expected-error {{__has_include must be used within a preprocessing directive}} 109 #endif 110 111 #if 0 112 MACRO1 // This should be fine because it is never actually reached 113 #endif 114 115 116 // Try badly formed expressions. 117 // FIXME: We can recover better in almost all of these cases. (PR13335) 118 119 // expected-error@+1 {{missing '(' after '__has_include'}} 120 #if __has_include "stdint.h") 121 #endif 122 123 // expected-error@+1 {{expected "FILENAME" or <FILENAME>}} expected-error@+1 {{token is not a valid binary operator in a preprocessor subexpression}} 124 #if __has_include(stdint.h) 125 #endif 126 127 // expected-error@+1 {{expected "FILENAME" or <FILENAME>}} 128 #if __has_include() 129 #endif 130 131 // expected-error@+1 {{missing '(' after '__has_include'}} 132 #if __has_include) 133 #endif 134 135 // expected-error@+1 {{missing '(' after '__has_include'}} 136 #if __has_include<stdint.h>) 137 #endif 138 139 // expected-error@+1 {{expected "FILENAME" or <FILENAME>}} expected-warning@+1 {{missing terminating '"' character}} expected-error@+1 {{invalid token at start of a preprocessor expression}} 140 #if __has_include("stdint.h) 141 #endif 142 143 // expected-error@+1 {{expected "FILENAME" or <FILENAME>}} expected-warning@+1 {{missing terminating '"' character}} expected-error@+1 {{token is not a valid binary operator in a preprocessor subexpression}} 144 #if __has_include(stdint.h") 145 #endif 146 147 // expected-error@+1 {{expected "FILENAME" or <FILENAME>}} expected-error@+1 {{token is not a valid binary operator in a preprocessor subexpression}} 148 #if __has_include(stdint.h>) 149 #endif 150 151 // expected-error@+1 {{__has_include must be used within a preprocessing directive}} 152 __has_include 153 154 // expected-error@+1 {{missing ')' after '__has_include'}} // expected-error@+1 {{expected value in expression}} // expected-note@+1 {{to match this '('}} 155 #if __has_include("stdint.h" 156 #endif 157 158 // expected-error@+1 {{expected "FILENAME" or <FILENAME>}} // expected-error@+1 {{expected value in expression}} 159 #if __has_include( 160 #endif 161 162 // expected-error@+1 {{missing '(' after '__has_include'}} // expected-error@+1 {{expected value in expression}} 163 #if __has_include 164 #endif 165 166 // expected-error@+1 {{missing ')' after '__has_include'}} // expected-error@+1 {{expected value in expression}} // expected-note@+1 {{to match this '('}} 167 #if __has_include(<stdint.h> 168 #endif 169 170 // expected-error@+1 {{expected "FILENAME" or <FILENAME>}} // expected-error@+1 {{expected value in expression}} 171 #if __has_include(<stdint.h) 172 #endif 173 174 #define HAS_INCLUDE(header) __has_include(header) 175 #if HAS_INCLUDE(<stdint.h>) 176 #else 177 #error "__has_include failed (9)." 178 #endif 179 180 #if FOO 181 #elif __has_include(<foo>) 182 #endif 183 184 // PR15539 185 #ifdef FOO 186 #elif __has_include(<foo>) 187 #endif 188
