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// KT-630 Bad type inference

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This commit is contained in:
Andrey Breslav
2011-11-30 11:02:03 +03:00
parent 82bddcc95b
commit 5293d1553b
2 changed files with 11 additions and 2 deletions
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compiler/frontend/src/org/jetbrains/jet/lang/types/inference/ConstraintSystemImpl.java
+8 -2
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@@ -267,9 +267,15 @@ public class ConstraintSystemImpl implements ConstraintSystem {
@Override @Override
public boolean noCorrespondingSupertype(@NotNull JetType subtype, @NotNull JetType supertype) { public boolean noCorrespondingSupertype(@NotNull JetType subtype, @NotNull JetType supertype) {
// If some of the types is an unknown, the constraint is already generated, and we should carry on // If some of the types is an unknown, the constraint must be generated, and we should carry on
// otherwise there can be no solution, and we should fail // otherwise there can be no solution, and we should fail
return someUnknown(getTypeValueFor(subtype), getTypeValueFor(supertype)); TypeValue subTypeValue = getTypeValueFor(subtype);
TypeValue superTypeValue = getTypeValueFor(supertype);
boolean someUnknown = someUnknown(subTypeValue, superTypeValue);
if (someUnknown) {
addSubtypingConstraintOnTypeValues(subTypeValue, superTypeValue);
}
return someUnknown;
} }
private boolean someUnknown(TypeValue subtypeValue, TypeValue supertypeValue) { private boolean someUnknown(TypeValue subtypeValue, TypeValue supertypeValue) {
compiler/testData/checkerWithErrorTypes/quick/regressions/kt630.jet
+3
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@@ -0,0 +1,3 @@
// KT-630 Bad type inference
val x = "lala".sure()
val s : String = x