> Not true, just tried it in MSVC and it compiled fine but with a warning on conflicting types.

If I meant that it would cause the compiler to report an error then I would have written that.

> If that's the case, then it should have been something along the lines of *"HTTP" instead.

We can say that they really should have written memcpy to get the string literal into the size_t or we can accept that sometimes people use language imprecisely and expect readers to make an effort to understand rather than make an effort not to understand.