This was fixed in the trunk, but it appears it did not make it into 1.10.0. It 
should be fixed in the 1.10.0 patch.

Thanks,
Scot


> On May 12, 2016, at 7:13 PM, Matthew Clay <[email protected]> wrote:
> 
> Hi,
> 
> I am transitioning to HDF5 1.10.0 to use some of the new features in the 
> library, but noticed that some old subroutines I had in place for writing 
> integer attributes no longer compiled. Specifically, the compiler complained 
> that there was no subroutine matching my call to H5AWRITE_F (using the 
> Fortran 90 interface).
> 
> I am attaching a Fortran program which writes attributes to a test file using 
> two approaches. First, an attribute is written in the main body of the 
> program. Second, I call a subroutine and pass the desired value of the 
> attribute. In the second approach, the code does not compile with HDF5 1.10.0 
> because the INTENT of the variable is IN (which in theory should work). If 
> the INTENT is changed to OUT or INOUT, the code compiles and runs without any 
> problem.
> 
> I have tested the same program using HDF5 1.8.17, and it works as expected 
> with INTENT(IN) for the subroutine interface. Checking the online 
> documentation (www.hdfgroup.org/HDF5/doc/RM/RM_H5A.html#Annot-Write), the 
> interface does specify INTENT(IN) for the buf argument.
> 
> The HDF5 source code is a mystery to me, but I did some digging in the build 
> directories to see if I could find anything suspicious. In the 1.8.17 build, 
> I found a file H5Aff_F90.f90 which looks like it contains the interfaces for 
> H5AWRITE_F. The argument buf does have INTENT(IN). In the 1.10.0 build, I 
> found a similar file H5_gen.F90. Here, all of the routines, e.g., 
> h5awrite_ikind_1_rank_0, have INTENT(INOUT) for buf.
> 
> Platforms tested: Personal linux desktop with gcc 4.9.3. Cray machine with 
> Cray compiler version 8.4.2. HDF5 installed with MPI support.
> 
> Thanks,
> Matthew
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