runtime: some linkname signatures do not match #58440
Description
The two affected functions are:
- internal/poll.runtime_pollWaitCanceled
- sync/atomic.runtime_procPin
What version of Go are you using (go version)?
go1.19rc2
Does this issue reproduce with the latest release?
Yes.
What operating system and processor architecture are you using (go env)?
N/A
What did you do?
This was identified as an error by a linkname analyzer. A patch was posted, and a suggestion was made to file a specific bug.
What did you expect to see?
I expected signatures of these functions to match. If they did not, they should at least have the same shape (i.e. they may intentionally mismatch as in the case of runtime.ifaceI2E).
What did you see instead?
They were identical except return values (or lack thereof). This could cause problems with assumptions regarding the stack layout for those calls.