expand wildcards in MacroClassLoader

Author: philwalk

compiler/src/dotty/tools/dotc/core/MacroClassLoader.scala

@@ -3,6 +3,7 @@ package dotty.tools.dotc.core
 import dotty.tools.dotc.core.Contexts._
 import dotty.tools.dotc.util.Property
 import dotty.tools.dotc.reporting.trace
+import dotty.tools.io.ClassPath
 
 import scala.collection.mutable
 
@@ -20,7 +21,8 @@ object MacroClassLoader {
     ctx.setProperty(MacroClassLoaderKey, makeMacroClassLoader(using ctx))
 
   private def makeMacroClassLoader(using Context): ClassLoader = trace("new macro class loader") {
-    val urls = ctx.settings.classpath.value.split(java.io.File.pathSeparatorChar).map(cp => java.nio.file.Paths.get(cp).toUri.toURL)
+    val entries = ClassPath.expandPath(ctx.settings.classpath.value, expandStar=true)
+    val urls = entries.map(cp => java.nio.file.Paths.get(cp).toUri.toURL).toArray
     val out = ctx.settings.outputDir.value.jpath.toUri.toURL // to find classes in case of suspended compilation
     new java.net.URLClassLoader(urls :+ out, getClass.getClassLoader)
   }