Fix #12128: Add test

tests/init/crash/i12128/Macro_2.scala

@@ -0,0 +1,19 @@
+import scala.quoted._
+import scala.language.experimental.macros
+
+object MacroCompat {
+  trait LocationMacro {
+    inline implicit def generate: Location = ${ locationImpl() }
+    implicit def generate: Location = macro MacroCompatScala2.locationImpl
+  }
+
+  def locationImpl()(using Quotes): Expr[Location] = '{ new Location(${Expr(0)}) }
+}
+
+object MacroCompatScala2 {
+  def locationImpl(c: Context): c.Tree = {
+    import c.universe._
+    val line = Literal(Constant(c.enclosingPosition.line))
+    New(c.mirror.staticClass(classOf[Location].getName()), line)
+  }
+}

tests/init/crash/i12128/Reflect_1.scala

@@ -0,0 +1,30 @@
+trait Context: // Dummy scala.reflect.macros.Context
+  type Tree = universe.Tree
+  val universe: Universe
+
+  trait Universe {
+    type Tree >: Null <: AnyRef with TreeApi
+    type Literal >: Null <: LiteralApi with TermTree
+    type TermTree >: Null <: TermTreeApi with Tree
+
+    trait TermTreeApi extends TreeApi { this: TermTree => }
+    trait LiteralApi extends TermTreeApi { this: Literal => }
+    trait TreeApi extends Product { this: Tree => }
+
+    type Constant
+
+    type Type
+
+    def Literal(const: Constant): Tree
+    def Constant(i: Int): Constant
+    def New(tpe: Type, arg: Tree): Tree
+  }
+
+  def enclosingPosition: Location
+
+  trait Mirror {
+    def staticClass(name: String): universe.Type
+  }
+  val mirror: Mirror
+
+class Location(val line: Int)

tests/init/crash/i12128/Test_3.scala

@@ -0,0 +1 @@
+object Test extends MacroCompat.LocationMacro