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gccgo: erroneously accepts duplicate constant keys in map literal #28104

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mdempsky opened this Issue Oct 9, 2018 · 0 comments

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mdempsky commented Oct 9, 2018

Under Composite literals, the Go spec says "It is an error to specify multiple elements with the same field name or constant key value."

However, gccgo erroneously accepts this code:

package p

var _ = map[int]int{0: 0, 0: 0}

cmd/compile and go/types correctly emit an error.

/cc @ianlancetaylor

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