cmd/compile: <N> in byte conversion error message #15055
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@josharian I don't think this bug only happens for []byte, I think it happens for all "collections"/arrays/slices so [] ie []string, []int, []struct. Please see https://play.golang.org/p/c2vPXbl0Ew package main
func main() {
_ = []int(12, "123", "485")
_ = []byte("a", "cd")
_ = []string("af", "be")
// Ones that pass
_ = int(15, "a")
_ = string("n", "e", "w")
_ = byte("info", "a$ap")
}when run or compiled gives error prog.go:4: too many arguments to conversion to []int: ([]int)(<N>)
prog.go:5: too many arguments to conversion to []byte: ([]byte)(<N>)
prog.go:6: too many arguments to conversion to []string: ([]string)(<N>)
prog.go:9: too many arguments to conversion to int: int(15, "a")
prog.go:10: too many arguments to conversion to string: string("n", "e", "w")
prog.go:11: too many arguments to conversion to byte: byte("info", "a$ap")Notice that the obscure error message only happens when we have |
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I've mailed https://go-review.googlesource.com/25361. |
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CL https://golang.org/cl/25361 mentions this issue. |
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Try to compile
_ = []byte("abc", "def").http://play.golang.org/p/b8yffUjLNq
Result:
too many arguments to conversion to []byte: ([]byte)(<N>)That error message is unhelpful; it looks like we have an unexpectedly nil Node.
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