https://issues.dlang.org/show_bug.cgi?id=23584

Jacob Carlborg <doob@me.com> changed:

           What    |Removed                     |Added
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           Keywords|                            |ImportC

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https://issues.dlang.org/show_bug.cgi?id=23584

Iain Buclaw <ibuclaw@gdcproject.org> changed:

           What    |Removed                     |Added
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           Priority|P1                          |P3

--- Comment #1 from Iain Buclaw <ibuclaw@gdcproject.org> ---
Why do you expect DMD to implement GDC/GCC built-ins?  (LDC might support them via Clang too, but is not guaranteed).

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https://issues.dlang.org/show_bug.cgi?id=23584

--- Comment #2 from Jacob Carlborg <doob@me.com> ---
I'm just trying to compile a C project and reporting compile errors as they appear.

The module __builtins.di already contains subs or implementations of a couple of __builtins. Since it's not possible to pass types to regular functions a macro needs to be added to importc.h that rewrites it to something that DMD can handle. I added the following to importc.h:

#define __builtin_bit_cast(type,expr) (type) expr

And then could at least continue compiling until the next error.

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https://issues.dlang.org/show_bug.cgi?id=23584

Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
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                 CC|                            |bugzilla@digitalmars.com

--- Comment #3 from Walter Bright <bugzilla@digitalmars.com> ---
Jacob, yes please on posting everything you run into.

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https://issues.dlang.org/show_bug.cgi?id=23584

Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
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            Summary|ImportC: expression         |ImportC: __builtin_bit_cast
                   |expected, not `unsigned`    |not supported

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https://issues.dlang.org/show_bug.cgi?id=23584

Dlang Bot <dlang-bot@dlang.rocks> changed:

           What    |Removed                     |Added
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           Keywords|                            |pull

--- Comment #4 from Dlang Bot <dlang-bot@dlang.rocks> ---
@WalterBright created dlang/dmd pull request #14795 "fix Issue 23584 - ImportC: __builtin_bit_cast not supported" fixing this issue:

- fix Issue 23584 - ImportC: __builtin_bit_cast not supported

https://github.com/dlang/dmd/pull/14795

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https://issues.dlang.org/show_bug.cgi?id=23584

Dlang Bot <dlang-bot@dlang.rocks> changed:

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

--- Comment #5 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #14795 "fix Issue 23584 - ImportC: __builtin_bit_cast not supported" was merged into master:

- 9ffb041d07cc5b3b47a803a18d1b7b31a6e79d6b by Walter Bright:
  fix Issue 23584 - ImportC: __builtin_bit_cast not supported

https://github.com/dlang/dmd/pull/14795

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