21 #ifndef _freetds_macros_h_
22 #define _freetds_macros_h_
24 #ifndef _freetds_config_h_
25 #error should include config.h before
32 #define TDS_ZERO_FREE(x) do {free((x)); (x) = NULL;} while(0)
33 #define TDS_VECTOR_SIZE(x) (sizeof(x)/sizeof(x[0]))
36 #define TDS_OFFSET(type, field) offsetof(type, field)
38 #define TDS_OFFSET(type, field) (((char*)&((type*)0)->field)-((char*)0))
41 #if ENABLE_EXTRA_CHECKS
42 # if defined(__llvm__) || (defined(__GNUC__) && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)))
43 # define TDS_COMPILE_CHECK(name,check) \
44 _Static_assert(check,#name)
45 # elif defined(__GNUC__) && __GNUC__ >= 2
46 # define TDS_COMPILE_CHECK(name,check) \
47 extern int name[(check)?1:-1] __attribute__ ((unused))
49 # define TDS_COMPILE_CHECK(name,check) \
50 extern int name[(check)?1:-1]
52 # define TDS_EXTRA_CHECK(stmt) stmt
54 # define TDS_COMPILE_CHECK(name,check) \
55 extern int disabled_check_##name
56 # define TDS_EXTRA_CHECK(stmt)
59 #if defined(__GNUC__) && __GNUC__ >= 3
60 # define TDS_LIKELY(x) __builtin_expect(!!(x), 1)
61 # define TDS_UNLIKELY(x) __builtin_expect(!!(x), 0)
63 # define TDS_LIKELY(x) (x)
64 # define TDS_UNLIKELY(x) (x)
67 #if ENABLE_EXTRA_CHECKS && defined(__GNUC__) && __GNUC__ >= 4
68 #define TDS_WUR __attribute__ ((__warn_unused_result__))