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spec: index of non-addressable array is not addressable
Motivated by: func f() []int func g() [10]int f()[1] = 1 // ok g()[1] = 1 // ERROR R=gri CC=golang-dev https://golang.org/cl/1278041
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@ -3017,9 +3017,10 @@ The right operand is evaluated conditionally.
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<p>
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The address-of operator <code>&</code> generates the address of its operand,
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which must be <i>addressable</i>,
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that is, either a variable, pointer indirection, array or slice indexing
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operation,
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or a field selector of an addressable struct operand.
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that is, either a variable, pointer indirection, or slice indexing
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operation;
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or a field selector of an addressable struct operand;
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or an array indexing operation of an addressable array.
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Given an operand of pointer type, the pointer indirection
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operator <code>*</code> retrieves the value pointed
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to by the operand.
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