xapian-core-1.4.21

[Bruce Dubbs]

New point version.

[Bruce Dubbs]

Xapian-core 1.4.21 (2022-09-22):

glass backend:

• Avoid throwing InvalidArgument when searching for overlong terms in some cases. Such terms can't match, but are valid to query for.

chert backend:

• Avoid throwing InvalidArgument when searching for overlong terms in some cases. Such terms can't match, but are valid to query for.

build system:

• Clean up cygwin and mingw configure checks. When we check $host_os, always anchor at the start (e.g. cygwin* not *cygwin*), and check for msys* as well since that's a derivative of cygwin and behaves similarly for the things we're checking here.

• Update to use AX_CXX_COMPILE_STDCXX which is a replacement for AX_CXX_COMPILE_STDCXX_11 (which we were using) which also supports newer C++ standards versions which will be useful. For C++11 the only difference seems to be that the macro now checks for attribute support - we use C++11 attributes so that seems a good thing.

documentation:

• INSTALL: Restructure MSVC section for clarity.

• INSTALL: Mention -D_FORTIFY_SOURCE=3 too (fairly new - requires GCC 12).

• Consistently say "macOS" not "Mac OS X", "OS X", etc.

• admin_notes.rst:

+ Update locking section to cover Open File Description locks

+ Add some discussion of block sizes

+ Fix cut-and-paste error - we were suggesting that the docdata table only

exists if there's positional data.

+ Improve markup

examples:

• Stop using std::endl in examples since this seems to be C++ best practice as it causes a flush of the stream, which is rarely actually wanted. Also often the replacement \n can be combined with a string literal.

portability:

• Stop trying to check for incompatible C++ ABI between the compiler used to build xapian-core and the compiler used to build code using xapian-core.

This check was helpful in the GCC 3 days, but ABI versions 2 and up are compatible aside from obscure corner cases, and GCC now defaults to using the latest ABI version it supports. The result is that this check is no longer useful enough to justify the noise.

We still check for incompatible _GLIBCXX_DEBUG between the library and application builds, since that will cause things not to work, and the normal error message doesn't make it clear what's wrong.

• Fix new warnings from GCC 12.

• Avoid undefined value use when unpacking a key in a corrupted glass docdata table. We now skip further checks on the entry in this case.

• Merge allocations in MSVC directory reading compatibility code so we can allocate in a single malloc() call.

• Add accept() wrapper which checks an assumption that Microsoft's SOCKET type only actually holds 32 bit values even in 64 bit platforms and throws an exception if violated.

• Eliminate a use of sprintf.

• Squash some unhelpful MSVC deprecation warnings.

• Declare dummy invalid parameter handler noexcept to fix a warning from MSVC.

• Include <stdlib.h> in configure check for sys_errlist as that's where it is with mingw and MSVC.

debug code:

• Fix debug logging for Xapian::Internal::intrusive_ptr<const T>.

GCC 12.2 warned about infinite recursion in the old version, and this seems to be the case. This code has been there a long time, but is only used when debug logging is enabled. It does seem to be used, so presumably nobody's tried to log something which triggered it.

[Bruce Dubbs]

Fixed at commits

ee7740c844 Update to balsa-2.6.4.
f4b4c814e2 Update to mesa-22.2.0.
fb45bfdc2a Update to flac-1.4.1.
a05a6f33b7 Update to xapian-core-1.4.21.