/* $NetBSD: msg_344.c,v 1.2 2022/06/17 18:54:53 rillig Exp $ */ # 3 "msg_344.c" // Test for message: bit-field of type plain 'int' has implementation-defined signedness [344] /* lint1-extra-flags: -p */ /* * C90 3.5.2.1 allows 'int', 'signed int', 'unsigned int' as bit-field types. * * C99 6.7.2.1 significantly changed the wording of the allowable types for * bit-fields. For example, 6.7.2.1p4 does not mention plain 'int' at all. * The rationale for C99 6.7.2.1 mentions plain 'int' though, and it would * have broken a lot of existing code to disallow plain 'int' as a bit-field * type. Footnote 104 explicitly mentions plain 'int' as well and it even * allows typedef-types for bit-fields. */ struct example { /* expect+1: warning: bit-field of type plain 'int' has implementation-defined signedness [344] */ int plain_int: 1; signed int signed_int: 1; unsigned int unsigned_int: 1; };