func go/types.opPos

4 uses

	go/types (current package)
		expr.go#L88: func opPos(x ast.Expr) token.Pos {
		expr.go#L200: 		check.overflow(x, opPos(x.expr))
		expr.go#L685: 			check.overflow(x, opPos(x.expr))
		literals.go#L80: 	check.overflow(x, opPos(x.expr))

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