Is this error an ICE? I think so, because I see the internal filename, but I'm not sure.

Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]

On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
> Is this error an ICE? I think so, because I see the internal filename, but I'm not sure.
>
> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]

Have you got a code sample to reproduce this?

On Sunday, 17 May 2015 at 09:30:16 UTC, Gary Willoughby wrote:
> On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
>> Is this error an ICE? I think so, because I see the internal filename, but I'm not sure.
>>
>> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]
>
> Have you got a code sample to reproduce this?

Of course:

----
void main() {
	import core.stdc.stdlib : malloc, free;

	auto ptr = cast(char[]) malloc(42);
}
----

On Sun, 17 May 2015 09:33:27 +0000
Namespace via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com> wrote:

> On Sunday, 17 May 2015 at 09:30:16 UTC, Gary Willoughby wrote:
> > On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
> >> Is this error an ICE? I think so, because I see the internal filename, but I'm not sure.
> >>
> >> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]
> >
> > Have you got a code sample to reproduce this?
> 
> Of course:
> 
> ----
> void main() {
> 	import core.stdc.stdlib : malloc, free;
> 
> 	auto ptr = cast(char[]) malloc(42);
> }
> ----

I guess it should be:

auto ptr = cast(char*)malloc(42)[0 .. 42];

On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
> Is this error an ICE? I think so, because I see the internal filename, but I'm not sure.
>
> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]

I would say this is not an ICE just normal error message.

On Sunday, 17 May 2015 at 09:59:41 UTC, Daniel Kozak wrote:
>
> On Sun, 17 May 2015 09:33:27 +0000
> Namespace via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com> wrote:
>
>> On Sunday, 17 May 2015 at 09:30:16 UTC, Gary Willoughby wrote:
>> > On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
>> >> Is this error an ICE? I think so, because I see the internal filename, but I'm not sure.
>> >>
>> >> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]
>> >
>> > Have you got a code sample to reproduce this?
>> 
>> Of course:
>> 
>> ----
>> void main() {
>> 	import core.stdc.stdlib : malloc, free;
>> 
>> 	auto ptr = cast(char[]) malloc(42);
>> }
>> ----
>
> I guess it should be:
>
> auto ptr = cast(char*)malloc(42)[0 .. 42];

or this if you want ptr to be char[] and not a pointer to char:

auto ptr = (cast(char*)malloc(42))[0 .. 42];
or
auto ptr = cast(char[])malloc(42)[0 .. 42];

On Sunday, 17 May 2015 at 10:09:11 UTC, Daniel Kozak wrote:
> On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
[...]
>> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]
>
> I would say this is not an ICE just normal error message.

"e2ir: " shouldn't be there, though.

On Sun, 17 May 2015 10:17:42 +0000
anonymous via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com> wrote:

> On Sunday, 17 May 2015 at 10:09:11 UTC, Daniel Kozak wrote:
> > On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
> [...]
> >> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]
> >
> > I would say this is not an ICE just normal error message.
> 
> "e2ir: " shouldn't be there, though.

Yep

On Sunday, 17 May 2015 at 09:59:41 UTC, Daniel Kozak wrote:
>
> On Sun, 17 May 2015 09:33:27 +0000
> Namespace via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com> wrote:
>
>> On Sunday, 17 May 2015 at 09:30:16 UTC, Gary Willoughby wrote:
>> > On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
>> >> Is this error an ICE? I think so, because I see the internal filename, but I'm not sure.
>> >>
>> >> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]
>> >
>> > Have you got a code sample to reproduce this?
>> 
>> Of course:
>> 
>> ----
>> void main() {
>> 	import core.stdc.stdlib : malloc, free;
>> 
>> 	auto ptr = cast(char[]) malloc(42);
>> }
>> ----
>
> I guess it should be:
>
> auto ptr = cast(char*)malloc(42)[0 .. 42];

That would work, but I did it on purpose. I wanted to test whether such dangerous code compiles or whether the compiler is smart enough and hits the alarm.

On Sun, 17 May 2015 10:36:33 +0000
Namespace via Digitalmars-d-learn <digitalmars-d-learn@puremagic.com> wrote:

> On Sunday, 17 May 2015 at 09:59:41 UTC, Daniel Kozak wrote:
> >
> > On Sun, 17 May 2015 09:33:27 +0000
> > Namespace via Digitalmars-d-learn
> > <digitalmars-d-learn@puremagic.com> wrote:
> >
> >> On Sunday, 17 May 2015 at 09:30:16 UTC, Gary Willoughby wrote:
> >> > On Sunday, 17 May 2015 at 09:25:33 UTC, Namespace wrote:
> >> >> Is this error an ICE? I think so, because I see the internal filename, but I'm not sure.
> >> >>
> >> >> Error: e2ir: cannot cast malloc(length * 8u) of type void* to type char[]
> >> >
> >> > Have you got a code sample to reproduce this?
> >> 
> >> Of course:
> >> 
> >> ----
> >> void main() {
> >> 	import core.stdc.stdlib : malloc, free;
> >> 
> >> 	auto ptr = cast(char[]) malloc(42);
> >> }
> >> ----
> >
> > I guess it should be:
> >
> > auto ptr = cast(char*)malloc(42)[0 .. 42];
> 
> That would work, but I did it on purpose. I wanted to test whether such dangerous code compiles or whether the compiler is smart enough and hits the alarm.

I see.

for eg.:

void main() {
    import core.stdc.stdlib : malloc, free;
    static struct arr
    {
        size_t length;
        void* ptr;
    }
    auto ptr = cast(arr) malloc(42);
}

prints:

test2.d(9): Error: cannot cast expression malloc(42LU) of type void* to arr

which makes sense, even e2ir text is not here.