Invalidate sources that depends on @inline methods

internal/compiler-bridge/src/main/scala-2.11/xsbt/Compat.scala

@@ -31,6 +31,10 @@ object Compat {
 
   // IMain in 2.13 accepts ReplReporter
   def replReporter(settings: Settings, writer: PrintWriter) = writer
+
+  implicit final class SettingsCompat(val settings: Settings) extends AnyVal {
+    @inline final def optInlinerEnabled: Boolean = false
+  }
 }
 
 /** Defines compatibility utils for [[ZincCompiler]]. */

internal/compiler-bridge/src/main/scala/xsbt/ExtractAPI.scala

@@ -519,17 +519,21 @@ class ExtractAPI[GlobalType <: Global](
   }
   private def getModifiers(s: Symbol): xsbti.api.Modifiers = {
     import Flags._
+    import xsbt.Compat._
     val absOver = s.hasFlag(ABSOVERRIDE)
     val abs = s.hasFlag(ABSTRACT) || s.hasFlag(DEFERRED) || absOver
     val over = s.hasFlag(OVERRIDE) || absOver
+    val hasInline = global.settings.optInlinerEnabled && s.annotations.exists(
+      _.symbol.tpe == typeOf[scala.inline]
+    )
     new xsbti.api.Modifiers(
       abs,
       over,
       s.isFinal,
       s.hasFlag(SEALED),
       isImplicit(s),
       s.hasFlag(LAZY),
-      s.hasFlag(MACRO),
+      s.hasFlag(MACRO) || hasInline,
       s.hasFlag(SUPERACCESSOR)
     )
   }

internal/compiler-bridge/src/main/scala_2.10/xsbt/Compat.scala

@@ -183,6 +183,8 @@ object Compat {
   implicit final class SettingsCompat(val settings: Settings) extends AnyVal {
     // Introduced in 2.11
     @inline final def fatalWarnings = settings.Xwarnfatal
+
+    @inline final def optInlinerEnabled: Boolean = false
   }
 
   implicit final class PositionOps(val self: sriu.Position) extends AnyVal {

zinc/src/sbt-test/source-dependencies/inline/A.scala

@@ -0,0 +1,14 @@
+/*
+ * Zinc - The incremental compiler for Scala.
+ * Copyright Scala Center, Lightbend, and Mark Harrah
+ *
+ * Licensed under Apache License 2.0
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+object A {
+  @inline
+  def x: Int = 1
+}

zinc/src/sbt-test/source-dependencies/inline/App.scala

@@ -0,0 +1,21 @@
+/*
+ * Zinc - The incremental compiler for Scala.
+ * Copyright Scala Center, Lightbend, and Mark Harrah
+ *
+ * Licensed under Apache License 2.0
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+object App {
+  def main(args: Array[String]): Unit = {
+    val exp = args(0).toInt
+    val res = B.x
+    if (res != exp) {
+      val e = new Exception(s"assertion failed: expected $exp, obtained $res")
+      e.setStackTrace(Array())
+      throw e
+    }
+  }
+}

zinc/src/sbt-test/source-dependencies/inline/B.scala

@@ -0,0 +1,14 @@
+/*
+ * Zinc - The incremental compiler for Scala.
+ * Copyright Scala Center, Lightbend, and Mark Harrah
+ *
+ * Licensed under Apache License 2.0
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+
+object B {
+  def x = A.x
+}

zinc/src/sbt-test/source-dependencies/inline/changes/A.scala

@@ -0,0 +1,15 @@
+/*
+ * Zinc - The incremental compiler for Scala.
+ * Copyright Scala Center, Lightbend, and Mark Harrah
+ *
+ * Licensed under Apache License 2.0
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * See the NOTICE file distributed with this work for
+ * additional information regarding copyright ownership.
+ */
+
+object A {
+  @inline
+  def x: Int = 2
+}

zinc/src/sbt-test/source-dependencies/inline/incOptions.properties

@@ -0,0 +1,12 @@
+#
+# Zinc - The incremental compiler for Scala.
+# Copyright Scala Center, Lightbend, and Mark Harrah
+#
+# Licensed under Apache License 2.0
+# SPDX-License-Identifier: Apache-2.0
+#
+# See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.
+#
+
+scalac.options = -opt:l:inline -opt-inline-from:**

zinc/src/sbt-test/source-dependencies/inline/test

@@ -0,0 +1,3 @@
+> run 1
+$ copy-file changes/A.scala A.scala
+> run 2