tree bf43890a4c6c181608fcff8a03eb8fb977409b18
parent 5a189bc297f7bfd286854af560f3b82c4e81bd20
author Nicolas Hillegeer <aktau@google.com> 1728595784 -0700
committer Gopher Robot <gobot@golang.org> 1728658181 +0000

internal/gocore/test: increase rlimit to max in parent

In our CI system, RLIMIT_CORE's maximum value is not `unlimited`. So
`setrlimit(RLIMIT_CORE, {...RLIM_INFINITY})` fails. Instead set it to
the maximum and ensure that it's not 0. A core file, even if truncated,
should get created.

Additionally, move the rlimit increase to the parent instead of the
child. This makes it easier to add more test binaries without
duplicating code. To make this stick, wrap the spawn with
`(Un)LockOSThread`.

The new `run()` function returns a PID, which isn't necessary here, but
is useful in case `/proc/sys/kernel/core_pattern` contains format
modifiers like %p, as happens in our CI.

Change-Id: Ied3533e0910dde2df888e50ca88c607ef33afacc
Reviewed-on: https://go-review.googlesource.com/c/debug/+/619555
Auto-Submit: Nicolas Hillegeer <aktau@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>