diff options
Diffstat (limited to 'test/files')
-rw-r--r-- | test/files/neg/t7834neg.check | 41 | ||||
-rw-r--r-- | test/files/neg/t7834neg.scala | 76 | ||||
-rw-r--r-- | test/files/pos/t7834.scala | 6 |
3 files changed, 123 insertions, 0 deletions
diff --git a/test/files/neg/t7834neg.check b/test/files/neg/t7834neg.check new file mode 100644 index 0000000000..569df4b8ce --- /dev/null +++ b/test/files/neg/t7834neg.check @@ -0,0 +1,41 @@ +t7834neg.scala:48: error: type mismatch; + found : C.super.q.type (with underlying type M2) + required: C.super.q.type + x1 = x2 // fail + ^ +t7834neg.scala:50: error: type mismatch; + found : C.super.q.type (with underlying type M1) + required: C.super.q.type + x2 = x1 // fail + ^ +t7834neg.scala:53: error: type mismatch; + found : C.super.q.type (with underlying type M1) + required: C.this.q.type + x3 = x1 // fail + ^ +t7834neg.scala:54: error: type mismatch; + found : C.super.q.type (with underlying type M2) + required: C.this.q.type + x3 = x2 // fail + ^ +t7834neg.scala:69: error: type mismatch; + found : C.super.q.type (with underlying type M2) + required: C.super.q.type + x1 = super[S2].q // fail + ^ +t7834neg.scala:71: error: type mismatch; + found : C.super.q.type (with underlying type M1) + required: C.super.q.type + x2 = super[S1].q // fail + ^ +t7834neg.scala:74: error: type mismatch; + found : C.super.q.type (with underlying type M1) + required: C.this.q.type + x3 = super[S1].q // fail + ^ +t7834neg.scala:75: error: type mismatch; + found : C.super.q.type (with underlying type M2) + required: C.this.q.type + x3 = super[S2].q // fail + ^ +8 errors found diff --git a/test/files/neg/t7834neg.scala b/test/files/neg/t7834neg.scala new file mode 100644 index 0000000000..d35a84eadd --- /dev/null +++ b/test/files/neg/t7834neg.scala @@ -0,0 +1,76 @@ +class M1 +class M2 extends M1 +class M3 extends M2 + +trait S1 { val q = new M1 ; val q1: q.type = q } +trait S2 { val q = new M2 ; val q2: q.type = q } + +class B extends S1 with S2 { + override val q = new M3 + val q3: q.type = q + + var x1: B.super[S1].q1.type = null + var x2: B.super[S2].q2.type = null + var x3: B.this.q3.type = null + + x1 = x1 + x1 = x2 + x1 = x3 + x2 = x1 + x2 = x2 + x2 = x3 + x3 = x1 + x3 = x2 + x3 = x3 + + x1 = q1 + x1 = q2 + x1 = q3 + x2 = q1 + x2 = q2 + x2 = q3 + x3 = q1 + x3 = q2 + x3 = x3 +} + +class C extends S1 with S2 { + override val q = new M3 + val q3: q.type = q + + // x1's type and x2's type are incompatible + // x3's is assignable to x1 or x2, but not vice versa + var x1: C.super[S1].q.type = null + var x2: C.super[S2].q.type = null + var x3: C.this.q.type = null + + x1 = x1 + x1 = x2 // fail + x1 = x3 + x2 = x1 // fail + x2 = x2 + x2 = x3 + x3 = x1 // fail + x3 = x2 // fail + x3 = x3 + + x1 = q1 + x1 = q2 + x1 = q3 + x2 = q1 + x2 = q2 + x2 = q3 + x3 = q1 + x3 = q2 + x3 = x3 + + x1 = q + x1 = super[S1].q + x1 = super[S2].q // fail + x2 = q + x2 = super[S1].q // fail + x2 = super[S2].q + x3 = q + x3 = super[S1].q // fail + x3 = super[S2].q // fail +} diff --git a/test/files/pos/t7834.scala b/test/files/pos/t7834.scala new file mode 100644 index 0000000000..fc9a0aa09d --- /dev/null +++ b/test/files/pos/t7834.scala @@ -0,0 +1,6 @@ +class S { val q = "" } + +class B extends S { + val x1: B.super.q.type = q + val x2: B.this.q.type = q +} |