/Plugins/UE4GitPlugin/Source/GitSourceControl/Private/GitSourceControlProvider.cpp(297): error C4800: Implicit conversion from 'const int' to bool. Possible information loss /Plugins/UE4GitPlugin/Source/GitSourceControl/Private/GitSourceControlProvider.cpp(297): note: consider using explicit cast or ...
Anif statementlets you conditionally process a statement when the specified test expression, implicitly converted tobool, evaluates totrue. If the implicit conversion toboolfails the program is ill-formed. In C, anifstatement lets you conditionally process a statement when the specified test expressio...
MSVC used to have a performance warning C4800 about implicit conversion to bool. It was too noisy and couldn't be suppressed, leading us to remove it in Visual Studio 2017. However, over the lifecycle of Visual Studio 2017 we got lots of feedback on the useful cases it was solving. We...
explicit operator bool() permits explicit conversions to bool—for example, given shared_ptr<X> sp, both static_cast<bool>(sp) and bool b(sp) are valid—and Boolean-testable "contextual conversions" to bool—for example, if (sp), !sp, sp && whatever. However, explicit operator bool() ...
bool b1=0.5;// b1 == 1 (0.5 converted to int would be zero)bool b2=2.0*_Imaginary_I;// b2 == 1 (but converted to int would be zero)bool b3=0.0+3.0*I;// b3 == 1 (but converted to int would be zero)bool b4=0.0/0.0;// b4 == 1 (NaN does not compare equal to zero)...
翻译：浮点型转化为整型（除了_Bool类型。转化为_Bool时没有向0取整的过程，而是直接比较其是不是0）...
算。编译器可自动处理这些转换而无需程序员介入,所以这类转换称为隐式转换(implicit conversion)。C 语言还允许程序员使用强制类型转换运算符执行显式转换(explicit conversion)。 当发生下列情况时会进行隐式转换: 1. 当算术表达式或逻辑表达式中操作数的类型不相同时。(C 语言执行所谓的常用算术转换,参见第 7.4.1...
hello.c:4:11: warning: implicit conversion from 'int' to 'char' changes value from 1000 to -24 [-Wconstant-conversion] char j = 1000; ~ ^~ 1 warning generated. 如果你直接赋值,也会有警告: #include <stdio.h> int main(void) { ...
有些clang-tidy检查提供了特定的检查方式来消除诊断,比如bugpron-use-after-move后的变量可以通过在变量被移出后重新初始化来消除警告,bugpron-string-integer-assignment可以通过显式转换将整数转换为char来抑制,可读性-implicit-bool-conversion也可以通过显式转换来抑制等等。
making all mod_opus CC mod_opus_la-mod_opus.lo mod_opus.c:1177:78: error: implicit conversion from enumeration type 'switch_bool_t' to different enumeration type 'bool_t' [-Werror,-Wenum-conversion] if (!switch_opus_packet_parse(payload, encoded_data_len, &opus_packet_info, debug))...