[Libguestfs] [libnbd PATCH 0/6] common: catch up with nbdkit

If we compare the "common" subdirectory between nbdkit @ 6b4178d0fdfe ("ci: Temporarily disable perl in MacOS", 2023-02-27) and libnbd @ d05cd8f384a7 ("Version 1.15.11.", 2023-02-28), we find differences. We can categorize these differences along two (orthogonal) axes: - Intentional or unintentional. Intentional differences are for example when one of the libnbd and nbdkit projects has either a customization or a feature that the other project doesn't need or want. (Customizations can be small, such as a divergence inside a header file. Feature granularity is larger: a feature usually corresponds to a full header file.) Unintentional differences come from missing ports, or incomplete ports. - Libnbd not having a change from nbdkit (whether intentionally or not), vs. nbdkit not having a change from libnbd (ditto). I've analyzed each of the differences found. This patch set eliminates those differences where libnbd unintentionally lags behind nbdkit. Later I plan to post the counterpart series for nbdkit (eliminating the differences where nbdkit unintentionally lags behind libnbd). Note that the counterpart series for nbdkit will not target libnbd @ d05cd8f384a7 (that is, libnbd 1.15.11) at once. Instead, it will target libnbd v1.15.9 at first. Then I plan to port my patches between libnbd v1.15.9 and v1.15.11 to nbdkit separately -- that's going to be more work. So this series, and the counterpart for nbdkit, will eliminate past debt, in order to form a common baseline for porting my recent patches from libnbd to nbdkit. The larger LISTEN_FDNAMES series will be resumed even later. Laszlo Eric Blake (1): tests: Avoid odd test behavior under NDEBUG [partial port] Richard W.M. Jones (5): common/include: Add unit tests [byte-swapping, isaligned, iszero] common/include: Add further unit tests [minmax] common: include: Define bswap_16, bswap_32 and bswap_64 [finish port] vector: Add vector_duplicate function common/include: Fix MIN and MAX macros so they can be nested [finish port] .gitignore | 4 + common/include/Makefile.am | 20 +++ common/include/test-byte-swapping.c | 108 ++++++++++++ common/include/test-isaligned.c | 62 +++++++ common/include/test-iszero.c | 66 ++++++++ common/include/test-minmax.c | 172 ++++++++++++++++++++ common/utils/vector.h | 17 ++ configure.ac | 3 + 8 files changed, 452 insertions(+) create mode 100644 common/include/test-byte-swapping.c create mode 100644 common/include/test-isaligned.c create mode 100644 common/include/test-iszero.c create mode 100644 common/include/test-minmax.c base-commit: d05cd8f384a7278187d7e87c4dc2a346e879773b