Bug fix in handling ufar calls. #1065

Job	Run time
build-posix (macos-latest, true)	2m 49s
build-posix (ubuntu-latest, false)	4m 51s
build-posix (macos-latest, false)	3m 24s
build-posix (ubuntu-latest, true)	5m 35s
	16m 39s

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