bool_getname P99_CONSTANT P99_DECLARE_ENUM P99_DECLARE_ENUM_GETNAME P99_DECLARE_ENUM_PARSE P99_DECLARE_STRUCT P99_DECLARE_UNION P99_DEFINE_ENUM P99_DEFINE_STRUCT P99_DEFINE_UNION P99_DERIVED_TYPES P99_ENC P99_ENC_DECLARE P99_ENC_INIT P99_ENCP P99_EXT_ARITHMETIC_TYPES P99_EXT_INTEGER_TYPES P99_EXT_REAL_TYPES P99_LITERAL P99_PLAIN_TYPE P99_POINTER_TYPE P99_STD_ARITHMETIC_EXTS P99_STD_ARITHMETIC_TYPES P99_STD_BASIC_EXTS P99_STD_BASIC_TYPES P99_STD_CHARACTER_EXTS P99_STD_CHARACTER_TYPES P99_STD_COMPLEX_EXTS P99_STD_COMPLEX_TYPES P99_STD_FLOATING_EXTS P99_STD_FLOATING_TYPES P99_STD_INTEGER_EXTS P99_STD_INTEGER_TYPES P99_STD_REAL_EXTS P99_STD_REAL_FLOATING_EXTS P99_STD_REAL_FLOATING_TYPES P99_STD_REAL_TYPES P99_STD_SIGNED_EXTS P99_STD_SIGNED_TYPES P99_STD_UNSIGNED_EXTS P99_STD_UNSIGNED_TYPES P99_STRUCT_LITERAL P99_STRUCT_TYPE0 P99_STRUCT_TYPES P99_STRUCT_UNUSE P99_STRUCT_USE P99_UNUSED

P99_UNUSED #define P99_UNUSED (   ... )    P99_SEP(P00_UNUSED, __VA_ARGS__) check if the list of expressions is syntactically valid but don't evaluate it This can be used to mark an identifier as unused to avoid bogus compiler warnings. bool myTruth(bool t) { P99_UNUSED(t); return true; } Remarks this must be in a place where the expression could successfully evaluate and where a declaration of any sort is suitable this is preferable over the trick (void)EXPR; since it guarantees that EXPR is never evaluated, even if it contains references to volatile objects, and since it can also be placed in file scope. Examples test-p99-pow.c. Definition at line 215 of file p99_enum.h.