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Diffstat (limited to 'src')
| -rw-r--r-- | src/compiler/scala/tools/nsc/transform/patmat/Solving.scala | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/compiler/scala/tools/nsc/transform/patmat/Solving.scala b/src/compiler/scala/tools/nsc/transform/patmat/Solving.scala index 1902606d86..31b1ffa912 100644 --- a/src/compiler/scala/tools/nsc/transform/patmat/Solving.scala +++ b/src/compiler/scala/tools/nsc/transform/patmat/Solving.scala @@ -29,8 +29,12 @@ trait Solving extends Logic { type Clause = collection.Set[Lit] // a clause is a disjunction of distinct literals def clause(l: Lit*): Clause = ( - // neg/t7020.scala changes output 1% of the time, the non-determinism is quelled with this linked set - mutable.LinkedHashSet(l: _*) + if (l.lengthCompare(1) <= 0) { + l.toSet // SI-8531 Avoid LinkedHashSet's bulk for 0 and 1 element clauses + } else { + // neg/t7020.scala changes output 1% of the time, the non-determinism is quelled with this linked set + mutable.LinkedHashSet(l: _*) + } ) type Lit |