• Andrej Mitrovic (7/7) May 18 2011 Skip the rest of the code until you reach main:
• Steven Schveighoffer (25/39) May 18 2011 Yes it does...
• Andrej Mitrovic (3/3) May 18 2011 Ah, I had the wrong assumption but it is a bug. Reported:

Andrej Mitrovic <none none.none> writes:

Skip the rest of the code until you reach main:
http://codepad.org/zPAgFnPX

We have this notion that string *literals* are zero-terminated, which enables
us to send them to C functions expecting zero-terminated char* strings.

But the same doesn't apply to wide string literals, e.g. "somestring"w. If it
did, its would save quite a bit of typing when calling WinAPI functions that
expect wide strings, instead of having to call "somestring".toUTF16z.

So currently:
immutable(char)[] literal implicitly convertible to const(char)* and char*.
immutable(wchar)[] literal not implicitly convertible to const(wchar)* and
wchar*.

"Steven Schveighoffer" <schveiguy yahoo.com> writes:

On Wed, 18 May 2011 16:57:37 -0400, Andrej Mitrovic <none none.none> wrote:

 Skip the rest of the code until you reach main:
 http://codepad.org/zPAgFnPX

 We have this notion that string *literals* are zero-terminated, which  
 enables us to send them to C functions expecting zero-terminated char*  
 strings.

 But the same doesn't apply to wide string literals, e.g. "somestring"w.

Yes it does...

steves steve-laptop:~/testd$ cat teststringlit.d
wstring ws = "abcde"w;
steves steve-laptop:~/testd$ ~/dmd-2.053/linux/bin32/dmd -c teststringlit.d
steves steve-laptop:~/testd$ ~/dmd-2.053/linux/bin32/obj2asm  
teststringlit.o

....

.rodata	segment
	db	061h,000h,062h,000h,063h,000h,064h,000h	;a.b.c.d.
	db	065h,000h,000h,000h	;e...
.rodata	ends

....

 If it did, its would save quite a bit of typing when calling WinAPI  
 functions that expect wide strings, instead of having to call  
 "somestring".toUTF16z.

 So currently:
 immutable(char)[] literal implicitly convertible to const(char)* and  
 char*.
 immutable(wchar)[] literal not implicitly convertible to const(wchar)*  
 and wchar*.

That doesn't make sense... hm...

tried it out, definitely a bug.  I get the error:

teststringlit.d(7): Error: function teststringlit.foo (const(wchar)*  
widestr) is not callable using argument types (immutable(wchar)[])
teststringlit.d(7): Error: cannot implicitly convert expression ("abcde"w)  
of type immutable(wchar)[] to const(wchar)*

A wstring literal should be able to be passed to a const(wchar)* parameter.

So the literal *is* zero terminated, but the compiler isn't letting you  
pass it directly to a const(wchar)*.

Please file with bugzilla.  As a workaround, you should be able to do  
"somestring"w.ptr;

-Steve

Andrej Mitrovic <andrej.mitrovich gmail.com> writes:

Ah, I had the wrong assumption but it is a bug. Reported:
http://d.puremagic.com/issues/show_bug.cgi?id=6032

And thanks for disassembling!