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40 lines
599 B
40 lines
599 B
4 months ago
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// errorcheck -0 -d=ssa/opt/debug=1
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package main
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// Trivial interface call devirtualization test.
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type real struct {
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value int
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}
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func (r *real) Value() int { return r.value }
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type Valuer interface {
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Value() int
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}
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type indirectiface struct {
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a, b, c int
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}
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func (i indirectiface) Value() int {
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return i.a + i.b + i.c
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}
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func main() {
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var r Valuer
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rptr := &real{value: 3}
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r = rptr
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if r.Value() != 3 { // ERROR "de-virtualizing call$"
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panic("not 3")
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}
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// Can't do types that aren't "direct" interfaces (yet).
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r = indirectiface{3, 4, 5}
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if r.Value() != 12 {
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panic("not 12")
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}
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}
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