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Change type of offset arg in H5Pset_external to HDoff_t #3505

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merged 4 commits into from
Jun 4, 2024
Merged

Change type of offset arg in H5Pset_external to HDoff_t #3505

merged 4 commits into from
Jun 4, 2024

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phil-opp
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@phil-opp phil-opp commented Sep 5, 2023 •
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Describe your changes

The off_t type is only 32-bit on Windows, which makes it impossible to link to higher offsets in large files.

The H5O_efl_entry_t struct defines its offset field already as HDoff_t, so no additional conversion is needed.,

Issue ticket number (GitHub or JIRA)

#3506

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  • My code conforms to the guidelines in CONTRIBUTING.md
  • I made an entry in release_docs/RELEASE.txt (bug fixes, new features)
  • I added a test (bug fixes, new features)

@phil-opp phil-opp force-pushed the fix-H5Pset_external-offset branch 3 times, most recently from f2693dc to 2d6c308 Compare September 5, 2023 13:07
@phil-opp
Change type of offset arg in H5Pset_external to HDoff_t
8e4e9e5 
The `off_t` type is only 32-bit on Windows, which makes it impossible to link to higher offsets in large files.

The `H5O_efl_entry_t` struct defines its `offset` field already as `HDoff_t`, so no additional conversion is needed.
@mkitti
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mkitti commented Sep 6, 2023

I think we might need to version the function in order to change the API like this.

@derobins derobins added Merge - Develop Only This cannot be merged to previous versions of HDF5 (file format or breaking API changes) Priority - 2. Medium ⏹ It would be nice to have this in the next release Component - C Library Core C library issues (usually in the src directory) Type - Improvement Improvements that don't add a new feature or functionality WIP Work in progress (please also convert PRs to draft PRs) labels Sep 11, 2023
@derobins derobins marked this pull request as ready for review September 14, 2023 15:22
@derobins derobins removed the WIP Work in progress (please also convert PRs to draft PRs) label Sep 14, 2023
@derobins derobins marked this pull request as draft September 14, 2023 16:31
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Give us a little more time with this. We're thinking about ditching off_t entirely and moving to an unsigned integer.

@phil-opp
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Sure, sounds good!

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Update: I'm starting to go through the library to make sure HDoff_t is used throughout. I think there's a few other internal changes we should also make. We have a lot of projects in motion right now, but I'll try to get the underlying work done in October so we can make this change.

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Update: The internal changes should be complete now. We're discussing how versioning is going to work for this.

@derobins derobins marked this pull request as ready for review March 28, 2024 14:52
derobins and others added 2 commits March 28, 2024 11:00
@derobins
Clean up HDoff_t PR
65650a3 
* Move HDoff_t to H5public.h
* Use typedefs instead of #define
* Remove duplicated definitions of HDoff_t
* Clean up h5_stat* definitions
* Add Doxygen for HDoff_t
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Merge branch 'develop' into fix-H5Pset_external-offset
bb6bd04
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This can probably go in at this point, but we still use off_t in places like the tools and tests. Those will have to get fixed in the near future.

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FWIW, this API call will NOT be versioned. If we didn't version API calls that use hid_t when we updated that from int to int64, we don't need to version this one.

jhendersonHDF
jhendersonHDF approved these changes Mar 28, 2024
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For going into develop this looks good. We'll likely want to think about how to make it so we don't accidentally sync this change back to the 1.14 branch.

@derobins derobins mentioned this pull request Mar 31, 2024
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@derobins derobins merged commit b698b48 into HDFGroup:develop Jun 4, 2024
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@phil-opp phil-opp deleted the fix-H5Pset_external-offset branch June 5, 2024 11:18
byrnHDF pushed a commit to byrnHDF/hdf5 that referenced this pull request Jun 26, 2024
@phil-opp @byrnHDF
Change type of offset arg in H5Pset_external to HDoff_t (HDFGro…
dec06ce 
…up#3505)

The `off_t` type is only 32-bit on Windows, which makes it impossible to link to higher offsets in large files.

The `H5O_efl_entry_t` struct defines its `offset` field already as `HDoff_t`, so no additional conversion is needed.
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@derobins derobins derobins approved these changes

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Component - C Library Core C library issues (usually in the src directory) Merge - Develop Only This cannot be merged to previous versions of HDF5 (file format or breaking API changes) Priority - 2. Medium ⏹ It would be nice to have this in the next release Type - Improvement Improvements that don't add a new feature or functionality
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