当尝试对空指针(null 或nullptr)进行算术运算时,编译器会发出此警告。 2. 警告含义 null used in arithmetic [-wpointer-arith] 警告表明代码中试图对空指针进行算术运算。在C和C++中,虽然指针算术是合法的,但对空指针进行算术运算通常没有意义,甚至可能是危险的,因为它可能导致未定义行为。 3. 可能导致
is there any way to disable the warnings by something like -Wno? I know they say you shouldn't use null in arithmetic anyway, but I'm just using it as a quick fix, and it bugs me that i'm getting like 7 warnings for it and not any other errors or warnings. ...
-Wnonnull null passed to a callee which requires a non-null argument -Wnull-arithmetic use of NULL in arithmetic operation -Wnull-arithmetic comparison between NULL and non-pointer %select{(%1 and NULL)|(NULL and %1)}0 -Wnull-dereference indirection of non-volatile null pointer will be ...
A CREATE/ALTER ON OBJECT object-name HAS PLACED OBJECT IN utility-name PENDING +645 WHERE NOT NULL IS IGNORED BECAUSE THE INDEX KEY CANNOT CONTAIN NULL VALUES OR THE INDEX IS AN XML INDEX +650 THE TABLE BEING CREATED OR ALTERED CANNOT BECOME A DEPENDENT TABLE +653 TABLE table-name IN PAR...
...KeWaitForSingleObject(&MyMutex, UserRequest, UserRequest, false, NULL); The following code example avoids this warning. ...KeWaitForSingleObject(&MyMutex, UserRequest, UserMode, false, NULL); คำติชม หน้านี้มีประโยชน์หรื...
SomeClass^ cSomeClassContainer::someFunction(System::Guid cID) { SomeClass^ *result = NULL; for each(CNameClass^ cName in this->NameList) { if(cName->Name->ID==cID) { *p = cName->Name; break; } } return result; } Otherwise your logic would have a flaw.Monday...
-Wbool-conversion "initialization of pointer of type %0 to null from a constant boolean " "expression -Wbridge-cast %0 cannot bridge to %1 -Wbridge-cast %0 bridges to %1, not %2 -Wbuiltin-requires-header declaration of built-in function '%0' requires inclusion of the header stdio....
"initialization of pointer of type %0 to null from a constant boolean " "expression -Wbridge-cast %0 cannot bridge to %1 -Wbridge-cast %0 bridges to %1, not %2 -Wbuiltin-requires-header declaration of built-in function '%0' requires inclusion of the header stdio.h -Wbuiltin-requir...
"Hello" does not fit because C strings are always null-terminated (for example, "Hello\0"). The compiler reports: Error: #144: a value of type "const char [6]" cannot be used to initialize an entity of type "char [5]" A similar error is also raised if there is an implicit ...
Arithmetic overflow: 32-bit value is shifted, then cast to 64-bit value. Result may not be an expected value C6308 'realloc' may return null pointer: assigning a null pointer to <variable>, which is passed as an argument to 'realloc', will cause the original memory block to be leaked...