test.osl:4: error: cannot write to non-output parameter "x"
test.osl:5: error: cannot write to non-output parameter "x"
test.osl:6: error: cannot write to non-output parameter "i"
test.osl:7: error: cannot write to non-output parameter "i"
test.osl:20: error: cannot write to non-output parameter "u"
FAILED test.osl
