Make EXEC_BACKEND more convenient on macOS.
It's hard to disable ASLR on current macOS releases, for testing with
-DEXEC_BACKEND. You could already set the environment variable
PG_SHMEM_ADDR to something not likely to collide with mappings created
earlier in process startup. Let's also provide a default value that
works on current releases and architectures, for developer convenience.
As noted in the pre-existing comment, this is a horrible hack, but
-DEXEC_BACKEND is only used by Unix-based PostgreSQL developers for
testing some otherwise Windows-only code paths, so it seems excusable.
Back-patch to all supported branches.
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/20210806032944.m4tz7j2w47mant26%40alap3.anarazel.de
Branch
------
REL_13_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/2c6275423535f86d0d4bc2a4651852d05b3d60c1
Modified Files
--------------
src/backend/port/sysv_shmem.c | 10 ++++++++++
1 file changed, 10 insertions(+)
