Alan Donovan 8c66e887f7 go.tools/ssa: a blocking select's implicit "default" case should runtime-panic, not fall through. ... Although such a control-flow path is impossible by construction, we must avoid no-arg returns (even if unreachable) in non-void functions. Tested by adding a sanity-check that ssa.Return has the correct arity. Also: added ssautil.Switches() test. Fixes golang/go#7702 R=gri, axwalk CC=golang-codereviews https://golang.org/cl/46520043		2014-01-02 15:12:23 -05:00
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switches.go	go.tools/ssa: a blocking select's implicit "default" case should runtime-panic, not fall through.	2014-01-02 15:12:23 -05:00