From dfd0042a5b16e29597d88153873d7079abea60ff Mon Sep 17 00:00:00 2001
From: Simon Ogorodnik <Simon.Ogorodnik@jetbrains.com>
Date: Tue, 25 Jun 2019 16:01:00 +0300
Subject: [PATCH] Do not create single element list if only one candidate

---
 .../src/org/jetbrains/kotlin/fir/resolve/calls/CallResolver.kt   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/CallResolver.kt b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/CallResolver.kt
index 3ad6bc6825f..e7acfc91ed2 100644
--- a/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/CallResolver.kt
+++ b/compiler/fir/resolve/src/org/jetbrains/kotlin/fir/resolve/calls/CallResolver.kt
@@ -900,6 +900,7 @@ open class CandidateCollector(val components: InferenceComponents) {
 
     fun bestCandidates(): List<Candidate> {
         if (groupNumbers.isEmpty()) return emptyList()
+        if (groupNumbers.size == 1) return candidates
         val result = mutableListOf<Candidate>()
         var bestGroup = groupNumbers.first()
         for ((index, candidate) in candidates.withIndex()) {