static int localvar = foo(); return localvar; } [tsecer@Harry localstatic]$ gcc localstatic.c -c localstatic.c:2: error: initializer element is not constant localstatic.c: In function ‘bar’: localstatic.c:5: error: initializer element is not constant [tsecer@Harry localstatic]$ g++ ...
```c // The IA64/generic ABI uses the first byte of the guard variable. // The ARM EABI uses the least significant bit. // Thread-safe static local initialization support. #ifdef __GTHREADS namespace { // static_mutex is a single mutex controlling all static initializations. // This...
static int localvar = foo(); return localvar; } [tsecer@Harry localstatic]$ gcc localstatic.c -c localstatic.c:2: error: initializer element is not constant localstatic.c: In function ‘bar’: localstatic.c:5: error: initializer element is not constant [tsecer@Harry localstatic]$ g++ ...
_Static_assert _Thread_local 1. 2. 3. 4. 5. 6. 这些关键字是 C 语言提供的,你不能自己创建关键字。 这些关键字都不能作为变量名,因此我们在 给变量命名时必须避开关键字。 0x01 标识符 C 语言中,标识符用于标识变量、函数或项目名。标识符必须合法!
編譯器警告 (層級 4) C4881 建構函式和/或解構函式將不會針對 tile_static 變數'variable-name' 叫用 編譯器警告 (層級 1) C4882 將具有非常數呼叫運算子的函子傳遞給 concurrency::parallel_for_each 已被取代 編譯器警告 C4883 'function name':函式大小讓最佳化無法進行 編譯器警告 C49...
P1874R1 Dynamic Initialization Order of Non-Local Variables in Modules VS 2019 16.8 20 P1975R0 Fixing the wording of parenthesized aggregate-initialization VS 2019 16.8 20 P0634R3 Down with typename! VS 2019 16.9 20 P0784R7 More constexpr containers VS 2019 16.9 20 P0840R2...
struct X { const void* const& PData() const { return _pv; } void* _pv; }; int main() { X x; auto p = x.PData(); // C4172 <func:#1 "?PData@X@@QBEABQBXXZ"> returning address of local variable or temporary } 來自多載函式的 reinterpret_castreinterpret_cast 的引數不是允...
例如: a_local_variable, a_struct_data_member, a_class_data_member_. 通用变量名 std::string table_name; // OK - lowercase with underscore. std::string tableName; // Bad - mixed case. 类数据成员名 类的数据成员,无论是静态的还是非静态的,都像普通的非成员变量一样命名,但后面带有下划线。
int i = 0; char c = {static_cast<char>(i)}; The following initialization is no longer allowed: C++ Copy void *p = {{0}}; To correct this code, use either of these forms: C++ Copy void *p = 0; // or void *p = {0}; Name lookup has changed. The following code is...