[Issue 11837] String literals should convert to const(void)*

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=11837



--- Comment #4 from yebblies <yebblies at gmail.com> 2013-12-29 14:53:09 EST ---
(In reply to comment #3)
> (In reply to comment #2)
> > Code like this will compile:
> > 
> > memcmp(ptr, "abc", 3);
> 
> What's wrong with `memcmp(ptr, "abc".ptr, 3)`?
> 

Adding .ptr looses the guarantee that the string will be 0-terminated.

eg
// enum x = "abc";
// immutable x = "abc";
auto x = "abc";

memcmp(ptr, x.ptr, 4); // oops, no guarantee x is 0-terminates, but the
compiler has no way to know that's what you wanted.

> I seem to remember there is an issue with null termination in this kind of
> useage?

...?

The fact that string literals don't convert to const(void)* is IMO an annoying
special case.

This works:
const(char)* x = "askjldfg";
const(void)* y = x;

But this doesn't:
const(void)* y = "askjldfg";

Unless there's a good reason this has to be prevented...

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