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Diffstat (limited to 'src/dotty/tools/dotc/core/Types.scala')
| -rw-r--r-- | src/dotty/tools/dotc/core/Types.scala | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/dotty/tools/dotc/core/Types.scala b/src/dotty/tools/dotc/core/Types.scala index 986a9c292..d3e97b492 100644 --- a/src/dotty/tools/dotc/core/Types.scala +++ b/src/dotty/tools/dotc/core/Types.scala @@ -2765,7 +2765,11 @@ object Types { def paramName = binder.paramNames(paramNum) - override def underlying(implicit ctx: Context): Type = binder.paramBounds(paramNum) + override def underlying(implicit ctx: Context): Type = { + val bounds = binder.paramBounds + if (bounds == null) NoType // this can happen if the PolyType is not initialized yet + else bounds(paramNum) + } // no customized hashCode/equals needed because cycle is broken in PolyType override def toString = s"PolyParam($paramName)" |