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/*
* @test /nodynamiccopyright/
* @bug 8312163
* @summary Crash in dominance check when compiling unnamed patterns
* @compile/fail/ref=T8312163.out -XDrawDiagnostics T8312163.java
*/
public class T8312163 {
sealed interface A permits B {}
record B() implements A {}
record Rec(A a, A b) {}
public void test(Rec r)
{
switch (r) {
case Rec(_, _): break;
case Rec(_, B()): // dominated
}
switch (r) {
case Rec(_, B()): break;
case Rec(_, _):
}
switch (r) {
case Rec(_, _): break;
case Rec(_, A a): // dominated
}
switch (r) {
case Rec(_, A a): break;
case Rec(_, _): // dominated
}
// duplicated unnamed patterns with unnamed pattern variables for reference
switch (r) {
case Rec(var _, var _): break;
case Rec(var _, B()): // dominated
}
switch (r) {
case Rec(var _, B()): break;
case Rec(var _, var _):
}
switch (r) {
case Rec(var _, var _): break;
case Rec(var _, A a): // dominated
}
switch (r) {
case Rec(var _, A a): break;
case Rec(var _, var _): // dominated
}
}
}
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