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HDFGroup / hdf5 Public

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Fork 340
Star 927

Code
Issues 297
Pull requests 17
Discussions
Actions
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Security and quality 5
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Open

No due date

•Last updated Apr 10, 2026

This milestone represents work that requires additional resourcing, sequencing, or long‑term planning,

2% complete

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0 issues of 34 selected

Open
(34)
Closed
(1)

Cache VOL h5diff tests fail

Component - ParallelParallel HDF5 (NOT thread-safety)Parallel HDF5 (NOT thread-safety)

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Component - ToolsCommand-line tools like h5dump, includes high-level toolsCommand-line tools like h5dump, includes high-level tools

Status: Open.

#5733 In HDFGroup/hdf5;

· mattjala opened

on Aug 19, 2025

Parallel test failure with 1.14.X and mpich

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Status: Open.

#2474 In HDFGroup/hdf5;

· opoplawski opened

on Feb 16, 2023

The CI workflows need refactoring

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Status: Open.

#5461 In HDFGroup/hdf5;

· byrnHDF opened

on Apr 21, 2025

Add a cross-compile GitHub action

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Status: Open.

#3171 In HDFGroup/hdf5;

· byrnHDF opened

on Jun 22, 2023

Resolve NVHPC testing issues when compiling with -O1 and higher and -DNDEBUG

Component - BuildCMake filesCMake files

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Status: Open.

#3820 In HDFGroup/hdf5;

· jhendersonHDF opened

on Nov 1, 2023

ctest run Failed（H5TEST-dt_arith，H5TEST-dtransform，H5DUMP-tfloatsattrs，H5DUMP-tldouble，H5DUMP-tldouble_scalar）

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Status: Open.

#3408 In HDFGroup/hdf5;

· albert20081010 opened

on Aug 22, 2023

Unicode long-term solution investigation

Component - C LibraryCore C library issues (usually in the src directory)Core C library issues (usually in the src directory)

Status: Open.

#5842 In HDFGroup/hdf5;

· brtnfld opened

on Sep 16, 2025

Bad Performance in Creating Many Datasets

Component - C LibraryCore C library issues (usually in the src directory)Core C library issues (usually in the src directory)

Status: Open.

#5962 In HDFGroup/hdf5;

· hyoklee opened

on Oct 31, 2025

Java FFM wrapper post-merge TODO items

Status: Open.

#5972 In HDFGroup/hdf5;

· jhendersonHDF opened

on Nov 4, 2025

fortranlib_test test aborts on Fedora Rawhide i686

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Component - WrappersC++, Java & Fortran wrappersC++, Java & Fortran wrappers

Status: Open.

#4926 In HDFGroup/hdf5;

· opoplawski opened

on Oct 4, 2024

H5Literate2 crash when iterating over a broken file

Component - C LibraryCore C library issues (usually in the src directory)Core C library issues (usually in the src directory)

Status: Open.

#5417 In HDFGroup/hdf5;

· Garados007 opened

on Apr 4, 2025

Implement h5fc, h5cc, etc. on Windows

Component - ToolsCommand-line tools like h5dump, includes high-level toolsCommand-line tools like h5dump, includes high-level tools

Status: Open.

#6062 In HDFGroup/hdf5;

· bmribler opened

on Nov 26, 2025

CMake Configuration Fails with `-DHDF5_BUILD_FRAMEWORKS:BOOL=ON`

Component - BuildCMake filesCMake files

Component - C LibraryCore C library issues (usually in the src directory)Core C library issues (usually in the src directory)

Component - DocumentationDoxygen, markdown, etc.Doxygen, markdown, etc.

Status: Open.

#5983 In HDFGroup/hdf5;

· hyoklee opened

on Nov 5, 2025

Test file image with different format versions

Component - C LibraryCore C library issues (usually in the src directory)Core C library issues (usually in the src directory)

Status: Open.

#5955 In HDFGroup/hdf5;

· fortnern opened

on Oct 30, 2025

Corrupt file or incorrect fapl setting can cause multi driver to throw assertion

Component - C LibraryCore C library issues (usually in the src directory)Core C library issues (usually in the src directory)

Status: Open.

#5954 In HDFGroup/hdf5;

· fortnern opened

on Oct 30, 2025

Break long running tests into smaller parts

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Status: Open.

#4126 In HDFGroup/hdf5;

· byrnHDF opened

on Mar 13, 2024

Add CI to detect stale generated files

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Status: Open.

#5114 In HDFGroup/hdf5;

· derobins opened

on Nov 14, 2024

H5Zdeflate.c: integer size mismatch in Windows builds

Status: Open.

#5730 In HDFGroup/hdf5;

· rprinceley opened

on Aug 18, 2025

H5Aget_storage_size, H5Dget_storage_size: Fix error return

Status: Open.

#5948 In HDFGroup/hdf5;

· Dave-Allured opened

on Oct 24, 2025

Document best practices and available controls for testing of HDF5

Component - DocumentationDoxygen, markdown, etc.Doxygen, markdown, etc.

Status: Open.

#6120 In HDFGroup/hdf5;

· jhendersonHDF opened

on Dec 19, 2025

h5ls: Ability to print attribute values without printing dataset values

Component - ToolsCommand-line tools like h5dump, includes high-level toolsCommand-line tools like h5dump, includes high-level tools

Status: Open.

#4755 In HDFGroup/hdf5;

· lamm45 opened

on Aug 24, 2024

Update file format for tool test reference files

Component - TestingCode in test or testpar directories, GitHub workflowsCode in test or testpar directories, GitHub workflows

Component - ToolsCommand-line tools like h5dump, includes high-level toolsCommand-line tools like h5dump, includes high-level tools

Status: Open.

#6078 In HDFGroup/hdf5;

· mattjala opened

on Dec 2, 2025

Simplify cross-building with Fortran support

Status: Open.

#6042 In HDFGroup/hdf5;

· eschnett opened

on Nov 18, 2025

No h5perf anymore in HDF 2.0.0

Component - ToolsCommand-line tools like h5dump, includes high-level toolsCommand-line tools like h5dump, includes high-level tools

Status: Open.

#6030 In HDFGroup/hdf5;

· mikekatana opened

on Nov 12, 2025

Keep CVE repo upto date

Component - DocumentationDoxygen, markdown, etc.Doxygen, markdown, etc.

Status: Open.

#5893 In HDFGroup/hdf5;

· nbagha1 opened

on Oct 2, 2025

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