1 /* RUN: %clang_cc1 -std=c89 -verify -Wreserved-macro-identifier %s 2 RUN: %clang_cc1 -std=c99 -verify -Wreserved-macro-identifier %s 3 RUN: %clang_cc1 -std=c11 -verify -Wreserved-macro-identifier %s 4 RUN: %clang_cc1 -std=c17 -verify -Wreserved-macro-identifier %s 5 RUN: %clang_cc1 -std=c2x -verify -Wreserved-macro-identifier %s 6 */ 7 8 /* WG14 DR491: partial 9 * Concern with Keywords that Match Reserved Identifiers 10 * 11 * Claiming this as partial because we do not reject code using a reserved 12 * identifier, but our reserved identifier code incorrectly identifies some 13 * keywords as reserved identifiers for macro names, but not others. 14 */ 15 16 #define const const 17 #define int int 18 #define restrict restrict 19 20 /* FIXME: none of these should diagnose the macro name as a reserved 21 * identifier per C2x 6.4.2p7 (similar wording existed in earlier standard 22 * versions). 23 */ 24 #define _Static_assert _Static_assert /* expected-warning {{macro name is a reserved identifier}} */ 25 #define _Alignof(x) _Alignof(x) /* expected-warning {{macro name is a reserved identifier}} */ 26 #define _Bool _Bool /* expected-warning {{macro name is a reserved identifier}} */ 27 #define __has_c_attribute __has_c_attribute /* expected-warning {{macro name is a reserved identifier}} 28 expected-warning {{redefining builtin macro}} 29 */ 30 #define __restrict__ __restrict__ /* expected-warning {{macro name is a reserved identifier}} */ 31