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For some reason, aix sometimes executes the bogus function body. This should never happen as it lives in a no-execute section. It might be a transient permission blip as the heap grows. Add a small function to cleanup and synchronize the icache before jumping to the bogus function to ensure it causes a panic, not SIGILL. Fixes #44583 Change-Id: Iadca62d82bfb70fc62088705dac42a880a1208fa Reviewed-on: https://go-review.googlesource.com/c/go/+/377314 Trust: Bryan Mills <bcmills@google.com> Run-TryBot: Paul Murphy <murp@ibm.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>