Simple Dub build of a Factorial example using Unit-Threaded for testing. Works fine with ldc2 breaks with dmd. This is on Debian Sid fully up to date.

|> ldc2 --version
LDC - the LLVM D compiler (1.1.1):
  based on DMD v2.071.2 and LLVM 3.9.1
  built with LDC - the LLVM D compiler (1.1.0)
  Default target: x86_64-pc-linux-gnu
  Host CPU: broadwell
  http://dlang.org - http://wiki.dlang.org/LDC

|> dmd --version
DMD64 D Compiler v2.073.2

|> dub test --compiler=ldc2
Package factorial (configuration "unittest") defines no import paths, use {"importPaths": [...]} or the default package directory structure to fix this.
Running custom 'unittest' configuration.
Performing "unittest" build using ldc2 for x86_64.
unit-threaded 0.7.11: target for configuration "library" is up to date.
factorial ~master: building configuration "unittest"...
Running pre-build commands...
Building package unit-threaded in /home/users/russel/.dub/packages/unit-threaded-0.7.11/unit-threaded/
Performing "$DFLAGS" build using dmd for x86_64.
unit-threaded 0.7.11: building configuration "gen_ut_main"...
Linking...
Running ../../../../.dub/packages/unit-threaded-0.7.11/unit-threaded/gen_ut_main -f ut_main.d
To force a rebuild of up-to-date targets, run again with --force.
Running ./factorial-test

Automatically generated file ut_main.d
Running unit tests from dirs ["."]
factorial.Check the base case for all algorithms.:
factorial.Check the property for all algorithms.:
factorial.Traditional example-based testing.:

Time taken: 34 ms, 363 μs, and 2 hnsecs
3 test(s) run, 0 failed.

OK!

|> dub test
Package factorial (configuration "unittest") defines no import paths, use {"importPaths": [...]} or the default package directory structure to fix this.
Running custom 'unittest' configuration.
Performing "unittest" build using dmd for x86_64.
unit-threaded 0.7.11: target for configuration "library" is up to date.
factorial ~master: building configuration "unittest"...
Running pre-build commands...
Building package unit-threaded in /home/users/russel/.dub/packages/unit-threaded-0.7.11/unit-threaded/
Performing "$DFLAGS" build using dmd for x86_64.
unit-threaded 0.7.11: building configuration "gen_ut_main"...
Linking...
Running ../../../../.dub/packages/unit-threaded-0.7.11/unit-threaded/gen_ut_main -f ut_main.d
factorial.d(71,15): Error: template std.bigint.BigInt.__ctor cannot deduce function from argument types !()(string) immutable, candidates are:
/usr/include/dmd/phobos/std/bigint.d(64,5):        std.bigint.BigInt.__ctor(Range)(Range s) if (isBidirectionalRange!Range && isSomeChar!(ElementType!Range) && !isInfinite!Range)
/usr/include/dmd/phobos/std/bigint.d(146,5):        std.bigint.BigInt.__ctor(T)(T x) if (isIntegral!T)
/usr/include/dmd/phobos/std/bigint.d(162,5):        std.bigint.BigInt.__ctor(T)(T x) if (is(Unqual!T == BigInt))
dmd failed with exit code 1.


If anyone has any useful intelligence as to what happening and how I
can workaround it, I'd be a grateful bunny.

-- 
Russel. ============================================================================= Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder@ekiga.net 41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel@winder.org.uk London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

On Friday, 7 April 2017 at 17:06:31 UTC, Russel Winder wrote:
> Simple Dub build of a Factorial example using Unit-Threaded for testing. Works fine with ldc2 breaks with dmd.

Can you post the code your using?

On Friday, 7 April 2017 at 17:06:31 UTC, Russel Winder wrote:
> If anyone has any useful intelligence as to what happening and how I
> can workaround it, I'd be a grateful bunny.

You might want to check with LDC from Git master first to see whether it is in fact a 2.073-related problem. — David

On Friday, 7 April 2017 at 17:06:31 UTC, Russel Winder wrote:
> Simple Dub build of a Factorial example using Unit-Threaded for testing. Works fine with ldc2 breaks with dmd. This is on Debian Sid fully up to date.
>
> |> ldc2 --version
> LDC - the LLVM D compiler (1.1.1):
>   based on DMD v2.071.2 and LLVM 3.9.1
>   built with LDC - the LLVM D compiler (1.1.0)
>   Default target: x86_64-pc-linux-gnu
>   Host CPU: broadwell
>   http://dlang.org - http://wiki.dlang.org/LDC
>
> |> dmd --version
> DMD64 D Compiler v2.073.2
>
> |> dub test --compiler=ldc2
> Package factorial (configuration "unittest") defines no import paths, use {"importPaths": [...]} or the default package directory structure to fix this.
> Running custom 'unittest' configuration.
> Performing "unittest" build using ldc2 for x86_64.
> unit-threaded 0.7.11: target for configuration "library" is up to date.
> factorial ~master: building configuration "unittest"...
> Running pre-build commands...
> Building package unit-threaded in /home/users/russel/.dub/packages/unit-threaded-0.7.11/unit-threaded/
> Performing "$DFLAGS" build using dmd for x86_64.
> unit-threaded 0.7.11: building configuration "gen_ut_main"...
> Linking...
> Running ../../../../.dub/packages/unit-threaded-0.7.11/unit-threaded/gen_ut_main -f ut_main.d
> To force a rebuild of up-to-date targets, run again with --force.
> Running ./factorial-test
>
> Automatically generated file ut_main.d
> Running unit tests from dirs ["."]
> factorial.Check the base case for all algorithms.:
> factorial.Check the property for all algorithms.:
> factorial.Traditional example-based testing.:
>
> Time taken: 34 ms, 363 μs, and 2 hnsecs
> 3 test(s) run, 0 failed.
>
> OK!
>
> |> dub test
> Package factorial (configuration "unittest") defines no import paths, use {"importPaths": [...]} or the default package directory structure to fix this.
> Running custom 'unittest' configuration.
> Performing "unittest" build using dmd for x86_64.
> unit-threaded 0.7.11: target for configuration "library" is up to date.
> factorial ~master: building configuration "unittest"...
> Running pre-build commands...
> Building package unit-threaded in /home/users/russel/.dub/packages/unit-threaded-0.7.11/unit-threaded/
> Performing "$DFLAGS" build using dmd for x86_64.
> unit-threaded 0.7.11: building configuration "gen_ut_main"...
> Linking...
> Running ../../../../.dub/packages/unit-threaded-0.7.11/unit-threaded/gen_ut_main -f ut_main.d
> factorial.d(71,15): Error: template std.bigint.BigInt.__ctor cannot deduce function from argument types !()(string) immutable, candidates are:
> /usr/include/dmd/phobos/std/bigint.d(64,5):        std.bigint.BigInt.__ctor(Range)(Range s) if (isBidirectionalRange!Range && isSomeChar!(ElementType!Range) && !isInfinite!Range)
> /usr/include/dmd/phobos/std/bigint.d(146,5):        std.bigint.BigInt.__ctor(T)(T x) if (isIntegral!T)
> /usr/include/dmd/phobos/std/bigint.d(162,5):        std.bigint.BigInt.__ctor(T)(T x) if (is(Unqual!T == BigInt))
> dmd failed with exit code 1.
>
>
> If anyone has any useful intelligence as to what happening and how I
> can workaround it, I'd be a grateful bunny.

Do you have the -dip1000 switch enabled?

On Fri, 2017-04-07 at 22:47 +0000, Meta via Digitalmars-d-learn wrote:
> […]
> 
> Do you have the -dip1000 switch enabled?

Not as far as I know. Why would I want to do that?

-- 
Russel. ============================================================================= Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder@ekiga.net 41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel@winder.org.uk London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

On Fri, 2017-04-07 at 20:38 +0000, David Nadlinger via Digitalmars-d- learn wrote:
> […]
> 
> You might want to check with LDC from Git master first to see whether it is in fact a 2.073-related problem. — David

Rats, I thought I'd got away from manually building LDC.

Fedora Rawhide is now on LLVM 4.0 is that going to be a problem building LDC?

-- 
Russel. ============================================================================= Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder@ekiga.net 41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel@winder.org.uk London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

On Fri, 2017-04-07 at 20:29 +0000, Jack Stouffer via Digitalmars-d- learn wrote:
> On Friday, 7 April 2017 at 17:06:31 UTC, Russel Winder wrote:
> > Simple Dub build of a Factorial example using Unit-Threaded for testing. Works fine with ldc2 breaks with dmd.
> 
> Can you post the code your using?

I thought I had given a URL to the code on GitHub, maybe not, so here it is:

https://github.com/russel/Factorial/tree/master/D


-- 
Russel. ============================================================================= Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder@ekiga.net 41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel@winder.org.uk London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder

On Saturday, 8 April 2017 at 12:16:10 UTC, Russel Winder wrote:
>
> Fedora Rawhide is now on LLVM 4.0 is that going to be a problem building LDC?

Of course not! ;-)

-Johan

On 04/07/2017 07:06 PM, Russel Winder via Digitalmars-d-learn wrote:
> factorial.d(71,15): Error: template std.bigint.BigInt.__ctor cannot deduce function from argument types !()(string) immutable

On 04/08/2017 02:18 PM, Russel Winder via Digitalmars-d-learn wrote:
> https://github.com/russel/Factorial/tree/master/D

So, factorial.d:71 is this:

----
    tuple(30, immutable BigInt("265252859812191058636308480000000")),
----

And the BigInt constructor you're trying to use there is this one [1]:

----
    this(Range)(Range s) if (
        isBidirectionalRange!Range &&
        isSomeChar!(ElementType!Range) &&
        !isInfinite!Range)
----

In order to construct an immutable object, the constructor must either have the `immutable` attribute, or it must be `pure` so that the object is known to be unique. The constructor being templated, I think `pure` should be inferred when possible. But when I add it explicitly, your code compiles, so the attribute is apparently not inferred. Looks like a compiler bug to me. I've filed an issue:
https://issues.dlang.org/show_bug.cgi?id=17309

It works with LDC because their BigInt doesn't have the templated constructor (yet, I guess).


[1] https://github.com/dlang/phobos/blob/df82dea9caf4a01f00734001fae62cee38ee4f4e/std/bigint.d#L64-L67

On Saturday, 8 April 2017 at 12:14:31 UTC, Russel Winder wrote:
> On Fri, 2017-04-07 at 22:47 +0000, Meta via Digitalmars-d-learn wrote:
>> […]
>> 
>> Do you have the -dip1000 switch enabled?
>
> Not as far as I know. Why would I want to do that?

You wouldn't as the std lib doesn't work with it yet.