Hi,

in druntime https://github.com/dlang/druntime/blob/master/src/core/sys/posix/sys/types.d#L113
there is following definiton:

else version (CRuntime_Musl)
{
    alias long      blksize_t;
    alias ulong     nlink_t;
    alias long      dev_t;
    alias long      blkcnt_t;
    alias ulong     ino_t;
    alias long      off_t;
    alias long      _Addr;
    alias int       pid_t;
    alias uint      uid_t;
    alias uint      gid_t;
    alias long      time_t;
    alias long      clock_t;
    alias ulong     pthread_t;
    alias _Addr     ssize_t;
}

If I replace the line "alias long off_t;" with:

  static if ( __USE_FILE_OFFSET64 )
  {
	alias long      off_t;
  }
  else
  {
	alias slong_t      off_t;
  }

the I got following compiler error:
/mnt/c/D/ldc-1.14.0-src/runtime/druntime/src/core/stdc/stdio.d(1676): Error: module `core.sys.posix.sys.types` import off_t not found

I cannot explain this error, because off_t is defined in both cases of the static if.
Even if I change it to:

  static if ( true )
	alias long off_t;

I get the same error. Is this a compiler bug?

Kind regards
André