SI-8148 fix anonymous functions with placeholders

Quasiquotes used to fail to generate proper fresh identifiers for
anonymous functions like:

  q"_ + _"

Due to improper initialization of FreshNameCreator in quasiquote
parser which was erroneously not preserved throughout parsing of
the code snippet but re-created on every invocation.

1 files changed, 5 insertions, 0 deletions

diff --git a/test/files/scalacheck/quasiquotes/TermConstructionProps.scala b/test/files/scalacheck/quasiquotes/TermConstructionProps.scala
index 6fb05ff9a4..38fbfa9f7f 100644
--- a/test/files/scalacheck/quasiquotes/TermConstructionProps.scala
+++ b/test/files/scalacheck/quasiquotes/TermConstructionProps.scala
@@ -224,4 +224,9 @@ object TermConstructionProps extends QuasiquoteProperties("term construction") {
   property("SI-8009") = test {
     q"`foo`".asInstanceOf[reflect.internal.SymbolTable#Ident].isBackquoted
   }
+
+  property("SI-8148") = test {
+    val q"($a, $b) => $_" = q"_ + _"
+    assert(a.name != b.name)
+  }
 }