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May 29, 2013 Is this a compiler bug, or a breaking fix/enhancement? | ||||
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Hi All, I updated to dmd 2.063 today and all has been going smoothly until I decided to try out msgpack.d. I got an error compiling the msgpack.d unittest, so out of interest I decided to check this using dmd2.062 and it compiled and ran fine. I admit I don't really understand whether the code should work or if it is broken and dmd 2.063 now correctly issues an error. To my untrained-D-eye the code looks OK, so any advice would be appreciated. ERROR: --- msgpack.d(3215): Error: cannot resolve type for value.as!(E). EXAMPLE: --- import std.stdio; import std.traits; enum E : int {F = -20} struct S { int val; @trusted @property T as(T)() if(is(Unqual!T == int) && !is(Unqual!T == enum)) { return cast(T)(val); } @trusted @property T as(T)() if(is(Unqual!T == enum)) { return cast(T)as!(OriginalType!T); } } void main() { S val = S(-20); assert(val.as!int == -20); assert(val.as!E == E.F); // val.as!E causes a compile time error. } --- Thanks, Stewart |
May 29, 2013 Re: Is this a compiler bug, or a breaking fix/enhancement? | ||||
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Posted in reply to estew | Here's a link to the msgpack.d source: https://github.com/msgpack/msgpack-d/blob/master/src/msgpack.d And the error is on line 3211, not 3215 as mentioned in the previous post. Thanks, Stewart |
May 29, 2013 Re: Is this a compiler bug, or a breaking fix/enhancement? | ||||
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Posted in reply to estew | On Wednesday, 29 May 2013 at 04:44:16 UTC, estew wrote: > Hi All, > > I updated to dmd 2.063 today and all has been going smoothly until I decided to try out msgpack.d. I got an error compiling the msgpack.d unittest, so out of interest I decided to check this using dmd2.062 and it compiled and ran fine. > > I admit I don't really understand whether the code should work or if it is broken and dmd 2.063 now correctly issues an error. To my untrained-D-eye the code looks OK, so any advice would be appreciated. > > > ERROR: > --- > msgpack.d(3215): Error: cannot resolve type for value.as!(E). > > EXAMPLE: > --- > import std.stdio; > import std.traits; > > enum E : int {F = -20} > struct S { > int val; > @trusted @property T as(T)() > if(is(Unqual!T == int) && !is(Unqual!T == enum)) > { > return cast(T)(val); > } > @trusted @property T as(T)() > if(is(Unqual!T == enum)) > { > return cast(T)as!(OriginalType!T); > } > } > > void main() { > S val = S(-20); > assert(val.as!int == -20); > assert(val.as!E == E.F); // val.as!E causes a compile time error. > } > --- This is a compiler regression in 2.063 release. http://d.puremagic.com/issues/show_bug.cgi?id=10197 Kenji Hara |
May 29, 2013 Re: Is this a compiler bug, or a breaking fix/enhancement? | ||||
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Posted in reply to Kenji Hara | >
> This is a compiler regression in 2.063 release.
> http://d.puremagic.com/issues/show_bug.cgi?id=10197
>
> Kenji Hara
Thanks for looking into it.
Stewart
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