undefined reference linker error with separate compillation

[mdparker]

zorael reported this on 2018-10-07T20:30:35Z

Transfered from https://issues.dlang.org/show_bug.cgi?id=19291

CC List

• razvan.nitu1305

Description

Manjaro/Arch x86_64, dmd v2.082.0, dub v1.11.0.

The code in the linkererror branch at https://github.com/zorael/kameloso/tree/linkererror compiles in normal mode but gives an undefined reference error when building with dub --build-mode=singleFile.

The error disappears and compilation succeeds if a local import inside a function (main) is moved up to module-level.

$ git clone https://github.com/zorael/kameloso -b linkererror
$ cd kameloso
$ dub build --build-mode=singleFile
/usr/bin/ld: .dub/build/application-debug-linux.posix-x86_64-dmd_2082-6DCE8163999240FCF02537A83F2B5667/main_4e3dbc0b.o: in function _Dmain': /home/zorael/src/kameloso/source/kameloso/main.d:10: undefined reference to _D8kameloso6logger14KamelosoLogger__T8tintImplVE3std12experimentalQCd4core8LogLeveli64ZQByMxFNbNdNiZAya'

--- main.d

import std.experimental.logger;

Logger logger;

{
    import kameloso.logger;  // <--
    string infotint = (cast(KamelosoLogger)logger).infotint;
}

--- logger.d

module kameloso.logger;

import std.experimental.logger;

class KamelosoLogger : Logger
{

{
    super(lv);
}

    {
        return string.init;
    }

    alias infotint = tintImpl!(LogLevel.info);
}

Comments

razvan.nitu1305 commented on 2023-04-28T11:02:57Z

This sounds like a dub bug.