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Andres Freund fd6daa006e Avoid need for valgrind suppressions for pg_atomic_init_u64 on some platforms. 
Previously we used pg_atomic_write_64_impl inside
pg_atomic_init_u64. That works correctly, but on platforms without
64bit single copy atomicity it could trigger spurious valgrind errors
about uninitialized memory, because we use compare_and_swap for atomic
writes on such platforms.

I previously suppressed one instance of this problem (6c878edc1d),
but as Tom reports that wasn't enough. As the atomic variable cannot
yet be concurrently accessible during initialization, it seems better
to have pg_atomic_init_64_impl set the value directly.

Change pg_atomic_init_u32_impl for symmetry.

Reported-By: Tom Lane
Author: Andres Freund
Discussion: https://postgr.es/m/1714601.1591503815@sss.pgh.pa.us
Backpatch: 9.5-
2020-06-08 20:02:56 -07:00
..
backend Fix locking bugs that could corrupt pg_control. 2020-06-08 13:59:57 +12:00
bin Fix pg_recvlogical avoidance of superfluous Standby Status Update. 2020-05-13 20:42:37 -07:00
common Fix typo 2020-02-19 21:09:39 +01:00
fe_utils Fix translation of special characters in psql's LaTeX output modes. 2018-11-26 17:32:51 -05:00
include Avoid need for valgrind suppressions for pg_atomic_init_u64 on some platforms. 2020-06-08 20:02:56 -07:00
interfaces Stamp 11.8. 2020-05-11 17:10:48 -04:00
makefiles Select CFLAGS_SL at configure time, not in platform-specific Makefiles. 2019-10-21 12:32:36 -04:00
pl Translation updates 2020-05-11 13:24:12 +02:00
port Stamp 11.8. 2020-05-11 17:10:48 -04:00
template Select CFLAGS_SL at configure time, not in platform-specific Makefiles. 2019-10-21 12:32:36 -04:00
test Reject "23:59:60.nnn" in datetime input. 2020-06-04 16:42:08 -04:00
timezone Update time zone data files to tzdata release 2020a. 2020-04-24 10:55:05 -04:00
tools Avoid need for valgrind suppressions for pg_atomic_init_u64 on some platforms. 2020-06-08 20:02:56 -07:00
tutorial Update copyright for 2018 2018-01-02 23:30:12 -05:00
.gitignore Convert cvsignore to gitignore, and add .gitignore for build targets. 2010-09-22 12:57:04 +02:00
DEVELOPERS Replace a couple of references to files that no longer exist in the source 2009-05-04 08:08:47 +00:00
Makefile Fix partial-build problems introduced by having more generated headers. 2018-04-09 16:42:10 -04:00
Makefile.global.in Select CFLAGS_SL at configure time, not in platform-specific Makefiles. 2019-10-21 12:32:36 -04:00
Makefile.shlib Ensure static libraries have correct mod time even if ranlib messes it up. 2018-11-29 15:53:44 -05:00
nls-global.mk nls-global.mk: search build dir for source files, too 2016-06-07 18:55:18 -04:00