diff options
Diffstat (limited to 'src/dotty/tools/dotc/core/TypeOps.scala')
| -rw-r--r-- | src/dotty/tools/dotc/core/TypeOps.scala | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/core/TypeOps.scala b/src/dotty/tools/dotc/core/TypeOps.scala index 42dd34f18..efededd7a 100644 --- a/src/dotty/tools/dotc/core/TypeOps.scala +++ b/src/dotty/tools/dotc/core/TypeOps.scala @@ -90,6 +90,8 @@ trait TypeOps { this: Context => final def glb(tp1: Type, tp2: Type): Type = if (tp1 eq tp2) tp1 + else if (!tp1.exists) tp2 + else if (!tp2.exists) tp1 else tp2 match { // normalize to disjunctive normal form if possible. case OrType(tp21, tp22) => tp1 & tp21 | tp1 & tp22 @@ -113,6 +115,8 @@ trait TypeOps { this: Context => def lub(tp1: Type, tp2: Type): Type = if (tp1 eq tp2) tp1 + else if (!tp1.exists) tp1 + else if (!tp2.exists) tp2 else { val t1 = mergeIfSuper(tp1, tp2) if (t1.exists) t1 |