https://d.puremagic.com/issues/show_bug.cgi?id=7175


yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |pull
                 CC|                            |yebblies@gmail.com


--- Comment #1 from yebblies <yebblies@gmail.com> 2013-11-27 19:27:34 EST ---
https://github.com/D-Programming-Language/dmd/pull/2888

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bearophile_hugs@eml.cc changed:

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                 CC|                            |bearophile_hugs@eml.cc


--- Comment #2 from bearophile_hugs@eml.cc 2013-11-27 00:46:46 PST ---
Do you mean in this code:


import core.stdc.stdlib, std.stdio;

struct VariableLength(T) {
    size_t len;
    T[0] items;

    @property T[] data() inout pure nothrow {
        return (cast(T*)&items)[0 .. len];
    }

    static typeof(this)* New(in size_t len) nothrow {
        auto vptr = cast(typeof(this)*)calloc(1,
                                              typeof(this).sizeof +
                                              T.sizeof * len);
        vptr.len = len;
        return vptr;
    }

    alias data this;
}

void main() {
    enum n = 0100;
    auto v = VariableLength!int.New(n);
    foreach (immutable i; 0 .. n)
        (*v)[i] = i * 10;
    foreach (immutable i; 0 .. n)
        writeln((*v)[i]);
}


The data() function will be written just like this?

    @property T[] data() inout pure nothrow {
        return items.ptr[0 .. len];
    }

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--- Comment #3 from yebblies <yebblies@gmail.com> 2013-11-27 20:37:22 EST ---
(In reply to comment #2)
> Do you mean in this code:
> 
> [snip]
> 
> 
> The data() function will be written just like this?
> 
>     @property T[] data() inout pure nothrow {
>         return items.ptr[0 .. len];
>     }

Looks like you'll still need to cast away inout in that example, but yeah.

Where a is a zero-length static array a.ptr -> &a

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--- Comment #4 from github-bugzilla@puremagic.com 2013-12-01 17:57:27 PST ---
Commits pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/36c9b648a5701c4a9a73f3b1abf33e9a18e54839 Fix Issue 7175 - Zero-length static array .ptr is always null

https://github.com/D-Programming-Language/dmd/commit/7652cfc7e279a2c23e4921bf52d46a6d663af253 Merge pull request #2888 from yebblies/issue7175

Issue 7175 - Zero-length static array .ptr is always null

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yebblies <yebblies@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


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--- Comment #5 from github-bugzilla@puremagic.com 2013-12-10 15:34:19 PST ---
Commit pushed to master at https://github.com/D-Programming-Language/dmd

https://github.com/D-Programming-Language/dmd/commit/3bf7718d82848f21b9e5562c96f3c7e8702c7ea7 Update message changed by fixing issue 7175

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