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-rw-r--r--src/compiler/scala/tools/nsc/symtab/Symbols.scala2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/compiler/scala/tools/nsc/symtab/Symbols.scala b/src/compiler/scala/tools/nsc/symtab/Symbols.scala
index 7cae1a08b3..b74a7a8dd0 100644
--- a/src/compiler/scala/tools/nsc/symtab/Symbols.scala
+++ b/src/compiler/scala/tools/nsc/symtab/Symbols.scala
@@ -906,7 +906,7 @@ trait Symbols {
var sym: Symbol = NoSymbol
while (!bcs.isEmpty && sym == NoSymbol) {
bcs = bcs.tail
- if (!bcs.head.isImplClass)
+ if (!bcs.isEmpty && bcs.head.isImplClass)
sym = matchingSymbol(bcs.head, base.thisType).suchThat(sym => !sym.hasFlag(DEFERRED))
}
sym