Run time asserts are fairly commonly used in C++. As the MSDN documentation for assert states" (assert) Evaluates an expression and, when the result is false, prints a diagnostic message and aborts the program. "There is another type of asserts which can be used to catch code issues right...
现实中的应用——BOOST_STATIC_ASSERT & boost::checked_delete BOOST_STATIC_ASSERT 在boost/static_assert.hpp中定义了一个宏BOOST_STATIC_ASSERT,用于完成编译时静态检查。其实现方式了我们的第2种方式很类似,利用了模板的特化技术 #defineBOOST_STATIC_ASSERT( B ) \ typedef::boost::static_assert_test<\ siz...
此时,就可以利用Compile-time Assertion解决这个问题。 template<typename To, typename From> To safe_reinterpret_cast(From from) { assert(sizeof(To) >= sizeof(From)); return reinterrupt_cast (from); }; 而后,就像你使用同样的C++ 类型转换一样来使用这个safe_reinterpret_cast : longl = 255; short...
PRINT_DEBUG("\tVERSION_MAX=0x%lx\n", (unsignedlong)VERSION_MAX);COMPILE_TIME_ASSERT(sizeof(stm_word_t) ==sizeof(void*));COMPILE_TIME_ASSERT(sizeof(stm_word_t) ==sizeof(atomic_t));#ifdefEPOCH_GCgc_init(stm_get_clock);#endif/* EPOCH_GC */#ifCM == CM_MODULARs = getenv(VR_T...
In this article, I describe a static (that is, compile time) assert facility that supplements the classic assert and give examples on when and how to use it.Ralf HollyC - C++ Users JournalKevin S. Van Horn. Compile-time assertions in C++. C/C++ Users Journal, October 1997. URL http:...
template <int A, int B> class VALUES { }; // specialization to provide safe passage for equal values template <int X> class VALUES<X, X> { public: static void MY_VALUES_ARE_EQUAL() {} }; #define ASSERT_EQUALITY(a, b) \ { \ typedef VALUES<a, b> COMPILE_TIME_ASSERTION; \ COM...
the compiler is able to check assertions at compile time. This is a big advantage, as assertions checked at compile time do not consume any code and do not affect performance. In this article, I describe a static (that is, compile time) assert facility that supplements the classic assert ...
On compilers where that construct is usable as a static assert, the function call and all reference to the identifier woozle_isnt_a_constant_less_than_23 will be optimized out if WOOZLE is a compile-time integer constant less than 23, and thus the linker will have no reason to care about...
Table 1. Compile-time options, abbreviations, and IBM-supplied defaults Compile-time optionAbbreviated namez/OS®default AGGREGATE[(DEC|HEX)] | NOAGGREGATE AG | NAG NOAGGREGATE ARCH(n) - ARCH(9) ASSERT(ENTRY | CONDITION) - ASSERT(ENTRY) ...
Table 1. Compile-time options, abbreviations, and IBM-supplied defaults Compile-time optionAbbreviated namez/OS®default AGGREGATE[(DEC|HEX)] | NOAGGREGATE AG | NAG NOAGGREGATE ARCH(n) - ARCH(10) ASSERT(ENTRY | CONDITION) - ASSERT(ENTRY) ...