From f9119c001e6a4b3ff0d4de125854c827aac6b306 Mon Sep 17 00:00:00 2001
From: Dmitry Petrov <dmitry.petrov@jetbrains.com>
Date: Wed, 20 Mar 2019 18:04:53 +0300
Subject: [PATCH] JVM_IR: generate file class without members if it has
 metadata

---
 .../jetbrains/kotlin/backend/jvm/lower/FileClassLowering.kt  | 2 +-
 .../ir/irText/declarations/fileWithTypeAliasesOnly.kt        | 1 +
 .../ir/irText/declarations/fileWithTypeAliasesOnly.txt       | 1 +
 .../org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java     | 5 +++++
 4 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.kt
 create mode 100644 compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.txt

diff --git a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/FileClassLowering.kt b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/FileClassLowering.kt
index 96d8fe94703..aefcd0149ac 100644
--- a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/FileClassLowering.kt
+++ b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/FileClassLowering.kt
@@ -59,7 +59,7 @@ private class FileClassLowering(val context: JvmBackendContext) : FileLoweringPa
                 fileClassMembers.add(it)
         }
 
-        if (fileClassMembers.isEmpty()) return
+        if (fileClassMembers.isEmpty() && irFile.metadata?.descriptors.isNullOrEmpty()) return
 
         val irFileClass = createFileClass(irFile, fileClassMembers)
         classes.add(irFileClass)
diff --git a/compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.kt b/compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.kt
new file mode 100644
index 00000000000..cb118c6fc94
--- /dev/null
+++ b/compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.kt
@@ -0,0 +1 @@
+typealias Bar<T> = (T) -> String
\ No newline at end of file
diff --git a/compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.txt b/compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.txt
new file mode 100644
index 00000000000..8b10fc32485
--- /dev/null
+++ b/compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.txt
@@ -0,0 +1 @@
+FILE fqName:<root> fileName:/fileWithTypeAliasesOnly.kt
diff --git a/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java b/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
index 688de667992..b2cf40867e0 100644
--- a/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
@@ -264,6 +264,11 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
             runTest("compiler/testData/ir/irText/declarations/fileWithAnnotations.kt");
         }
 
+        @TestMetadata("fileWithTypeAliasesOnly.kt")
+        public void testFileWithTypeAliasesOnly() throws Exception {
+            runTest("compiler/testData/ir/irText/declarations/fileWithTypeAliasesOnly.kt");
+        }
+
         @TestMetadata("interfaceProperties.kt")
         public void testInterfaceProperties() throws Exception {
             runTest("compiler/testData/ir/irText/declarations/interfaceProperties.kt");