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coder/coderd
Zach 2bac4eb739 fix: use time.Equal() for external auth token expiry comparison (#22295)
The listen loop in workspaceAgentsExternalAuthListen compared
OAuthExpiry using == which compares `time.Time` internal struct fields
including the `*time.Location` pointer.

`time.LoadLocation` does not cache the returned `*Location` pointer, so
each lib/pq connection gets a distinct pointer for the same timezone.
When `pq.ParseTimestamp()` applies the connection's location to a parsed
timestamp, the resulting time.Time embeds that connection-specific
pointer. If the `sql.DB` pool hands out different connections for the
two GetExternalAuthLink reads, the identical timestamp produces
`time.Time` values where == returns false despite representing the same
instant. This is intermittent because the pool _usually_ reuses the same
connection for sequential queries.

This change uses `.Equal()` to compare instants regardless of location.
Also makes the test's validation call counter atomic to fix a possible
data race between the HTTP server and test goroutines.
2026-02-25 08:45:00 -07:00
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