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We want to support a "noreturn" decoration on more compilers besides
just GCC-compatible ones, but for that we need to move the decoration
in front of the function declaration instead of either behind it or
wherever, which is the current style afforded by GCC-style attributes.
Also rename the macro to "pg_noreturn" to be similar to the C11
standard "noreturn".
pg_noreturn is now supported on all compilers that support C11 (using
_Noreturn), as well as GCC-compatible ones (using __attribute__, as
before), as well as MSVC (using __declspec). (When PostgreSQL
requires C11, the latter two variants can be dropped.)
Now, all supported compilers effectively support pg_noreturn, so the
extra code for !HAVE_PG_ATTRIBUTE_NORETURN can be dropped.
This also fixes a possible problem if third-party code includes
stdnoreturn.h, because then the current definition of
#define pg_attribute_noreturn() __attribute__((noreturn))
would cause an error.
Note that the C standard does not support a noreturn attribute on
function pointer types. So we have to drop these here. There are
only two instances at this time, so it's not a big loss. In one case,
we can make up for it by adding the pg_noreturn to a wrapper function
and adding a pg_unreachable(), in the other case, the latter was
already done before.
Reviewed-by: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/pxr5b3z7jmkpenssra5zroxi7qzzp6eswuggokw64axmdixpnk@zbwxuq7gbbcw
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Backpatch-through: 13
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size_t is the size of an object in memory, not the size of a file on disk.
Thanks to Tom Lane for noting the error.
Discussion: http://postgr.es/m/1865585.1727803933@sss.pgh.pa.us
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This also works for compressed tar-format backups. However, -n must be
used, because we use pg_waldump to verify WAL, and it doesn't yet know
how to verify WAL that is stored inside of a tarfile.
Amul Sul, reviewed by Sravan Kumar and by me, and revised by me.
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simplehash.h references pg_fatal(), which cpluspluscheck says is
undeclared, causing the CI CompilerWarnings task to fail since commit
aa2d6b15. Include the header it needs.
Discussion: https://postgr.es/m/CA%2BhUKGJC3d4PXkErpfOWrzQqcq6MLiCv0%2BAH0CMQnB6hdLUFEw%40mail.gmail.com
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This is in preparation for adding a second source file to this
directory.
Amul Sul, reviewed by Sravan Kumar and revised a bit by me.
Discussion: http://postgr.es/m/CAAJ_b95mcGjkfAf1qduOR97CokW8-_i-dWLm3v6x1w2-OW9M+A@mail.gmail.com
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