Feature or bug: implicit cast from false to 0

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=?ISO-8859-2?Q?Mihajlo_Cvetanovi=E6?=

Observe this code (VC7.1):

void Test(const char*)
{
}

int main(void)
{
Test( false ); // OK
Test( true ); // error C2664: cannot convert from bool to const char*
}

Shouldn't the first call also produce the compiler error?
 
Mihajlo Cvetanoviæ said:
Observe this code (VC7.1):

void Test(const char*)
{
}

int main(void)
{
Test( false ); // OK
Test( true ); // error C2664: cannot convert from bool to const
char*
}

Shouldn't the first call also produce the compiler error?
Click to expand...


No - false, 0, NULL, 1 - 1, etc are all examples of constant integral
expressions, that can be used as the null pointer value.


Test(false) works just as well as Test(0) or Test(NULL).


Bo Persson
 
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