https://issues.dlang.org/show_bug.cgi?id=23936

Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ImportC
                 CC|                            |bugzilla@digitalmars.com

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https://issues.dlang.org/show_bug.cgi?id=23936

--- Comment #1 from Walter Bright <bugzilla@digitalmars.com> ---
The problem can be duplicated with:

test.d:

  import impc;
  pragma(msg, "M128A.align ", M128A.alignof );
  pragma(msg, "_CONTEXT.align ", _CONTEXT.alignof );
  pragma(msg, "SomeType.align ", SomeType.alignof );

impc.i:

  __pragma(pack(push, 16))
  typedef struct /*garbage*/ {
        long long val;
  } SomeType, *PSomeType;
  __pragma(pack(pop))

  #pragma pack(push,16)
  __pragma(pack(push,16))
  typedef struct /*__declspec(align(16))*/ _M128A {
    long long Low;
    long long High;
  } M128A, *PM128A;
  __pragma(pack(pop))
  #pragma pack(pop)

  #pragma pack(push,16)
  __pragma(pack(push,16))
  typedef struct _CONTEXT {
    int LastExceptionFromRip;
  } CONTEXT, *PCONTEXT; //__attribute__((aligned( 16))), *PCONTEXT;
  __pragma(pack(pop))
  #pragma pack(pop)

compiling:

  M128A.align 8LU
  _CONTEXT.align 4LU
  SomeType.align 16LU

Something seems wrong with __pragma.

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https://issues.dlang.org/show_bug.cgi?id=23936

--- Comment #2 from Walter Bright <bugzilla@digitalmars.com> ---
Further investigation shows that it works if the struct is anonymous, does not otherwise.

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https://issues.dlang.org/show_bug.cgi?id=23936

Walter Bright <bugzilla@digitalmars.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|x86_64                      |All
            Summary|ImportC: pragma pack is not |ImportC: pragma pack is not
                   |working for concrete module |working for structs
                   |(libuv)                     |
                 OS|Windows                     |All

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https://issues.dlang.org/show_bug.cgi?id=23936

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |pull

--- Comment #3 from Dlang Bot <dlang-bot@dlang.rocks> ---
@WalterBright created dlang/dmd pull request #15278 "fix Issue 23936 - ImportC: pragma pack is not working for structs" fixing this issue:

- fix Issue 23936 - ImportC: pragma pack is not working for structs

https://github.com/dlang/dmd/pull/15278

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https://issues.dlang.org/show_bug.cgi?id=23936

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

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

--- Comment #4 from Dlang Bot <dlang-bot@dlang.rocks> ---
dlang/dmd pull request #15278 "fix Issue 23936 - ImportC: pragma pack is not working for structs" was merged into master:

- e696adf37d83ee456680035bc517fb3b8edce293 by Walter Bright:
  fix Issue 23936 - ImportC: pragma pack is not working for structs

https://github.com/dlang/dmd/pull/15278

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