Changes Autotools testing to use HDF5_TEST_DRIVER environment
variable to avoid running tests that don't work well with several
VFDs
Restores old h5_get_vfd_fapl() testing function to setup a FAPL
with a particular VFD
Adds a macro for the default VFD name
We previously replaced local macros with AC_SYS_LARGEFILE, which is
unfortunately buggy on some systems and does not correctly set the
necessary defines, despite successfully detecting them.
This restores the previous macro hacks to acsite.m4
* Fix issue with Subfiling VFD and multiple opens of same file
* Update H5_subfile_fid_to_context to return error value instead of ID
* Add helper routine to initialize open file mapping
The buffers passed to stat-like calls are only partially filled in by
the call, leaving ununitialized memory areas when the stat buffers are
created on the stack.
This change memsets the buffers to 0 before the stat calls, quieting
the -fsanitze=memory complaints.
* Fixes detection of various Windows libraries, etc.
* Corrects alarm(2) configure checks
* Uses Win32 threads by default w/ Pthreads override, if desired
* Set _WIN32_WINNT correctly for MinGW
* Fix setenv(3) wrapper for MinGW, which does not have getenv_s()
MinGW Autotools support is still not Amazing, but this at least
allows the library and tools build and is better about thread-safety
Removes some datatype copying calls that are now unnecessary after
refactoring the datatype conversion code to use pointers internally
rather than IDs
Rewrites the enum conversion function so that it uses cached copies
of the source and destination datatypes in order to avoid modifying
the datatypes passed in
Adds a 'recursive' field to the datatype conversion context which
allows the conversion functions for members of a container datatype
to skip unnecessary repetitive conversion setup code
Changes internal datatype conversion callback functions so that the
source and destination datatype structure pointers are const
Removes some unused and unnecessary internal IDs registered with
H5I_register
Fixed some conversion issues with Clang due to problematic undefined
behavior when casting a negative floating-point value to an integer
Fixed a bug in the library's software integer to floating-point
conversion function where a user's conversion exception function
returning H5T_CONV_UNHANDLED in the case of overflows would result in
incorrect data after conversion
Added configure checks for functions and macros related to _Float16
usage since some compilers expose the datatype but not the functions or
macros
Fixed a dt_arith test failure when H5_WANT_DCONV_EXCEPTION isn't defined
Fixed a few warnings from not explicitly casting some _Float16 variables
upwards
