編譯器警告 (層級 1) C5063 'std::is_constant_evaluated' 在資訊清單形式的常數評估運算式中一律評估為 true 編譯器警告 (層級 1) C5072 已啟用 ASAN 且未發出偵錯資訊。 啟用偵錯資訊以強化 ASAN 錯誤報告 編譯器警告 (層級 1) C5081 /GENPROFILE、/FASTGENPROFILE 或/LTCG:PGI 不支援安全...
以上代码无法编译通过,因为constexpr functiong不是强保证执行于编译期,在其中自然无法调用consteval function。 但是,即便加上if std::is_constant_evaluated()也无法编译成功。 这就存在问题了,P1938通过if consteval修复了这个问题。在C++23,可以这样写: 该特性目前在GCC 12和Clang 14以上版本已经实现。 6 Formatte...
P0595R2 std::is_constant_evaluated() VS 2019 16.5 20 P0602R4 Propagating Copy/Move Triviality In variant/optional VS 2017 15.317 P0604R0 Changing is_callable/result_of To invoke_result, is_invocable, is_nothrow_invocable VS 2017 15.3 17 P0607R0 Inline Variables for the Stand...
P0595R2 std::is_constant_evaluated() VS 2019 16.5 20 P0602R4 Propagating Copy/Move Triviality In variant/optional VS 2017 15.317 P0604R0 Changing is_callable/result_of To invoke_result, is_invocable, is_nothrow_invocable VS 2017 15.3 17 P0607R0 Inline Variables for the Stand...
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A popular technique modern compilers use to improve the runtime performance of compiled code is to perform computations at compile time instead of at runtime. However, constant expressions need to be evaluated at compile time for a variety of reasons. To help resolve this problem, I've been ...
编译的时候加上-fsanitize=undefined选项，就可以找出一些代码中存在的ub的地方，例如整数溢出、空指针解...
warning C6237: (<zero> && <expression>) is always zero. <expression> is never evaluated and may have side effects This warning indicates that a constant value of zero was detected on the left side of a logical-and operation that occurs in a test context. The resulting expression always ev...
According to the study, sea grass ecosystems can raise pH levels by more than 0.1 unit, equivalent to about a 30% decrease in acidity. The effect isn’t constant. It comes in waves and is influenced by temperature, daylight, ocean currents and other factors that affect water chemistry and ...