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Fix Y2038 issues with MyStartTime.

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Several places treat MyStartTime as a "long", which is only 32 bits
wide on some platforms.  In reality, MyStartTime is a pg_time_t,
i.e., a signed 64-bit integer.  This will lead to interesting bugs
on the aforementioned systems in 2038 when signed 32-bit integers
are no longer sufficient to store Unix time (e.g., "pg_ctl start"
hanging).  To fix, ensure that MyStartTime is handled as a 64-bit
value everywhere.  (Of course, users will need to ensure that
time_t is 64 bits wide on their system, too.)

Co-authored-by: Max Johnson
Discussion: https://postgr.es/m/CO1PR07MB905262E8AC270FAAACED66008D682%40CO1PR07MB9052.namprd07.prod.outlook.com
Backpatch-through: 12
This commit is contained in:
Nathan Bossart
2024-10-07 13:51:03 -05:00
parent 0f0e253dbf
commit 8aaf88b63d
6 changed files with 10 additions and 10 deletions
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2
contrib/postgres_fdw/option.c
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@@ -522,7 +522,7 @@ process_pgfdw_appname(const char *appname)
appendStringInfoString(&buf, application_name);
break;
case 'c':
appendStringInfo(&buf, "%lx.%x", (long) (MyStartTime), MyProcPid);
appendStringInfo(&buf, "%" INT64_MODIFIER "x.%x", MyStartTime, MyProcPid);
break;
case 'C':
appendStringInfoString(&buf, cluster_name);