Test warnings when an indy cannot be inlined

There are two cases tested here
  - An indyLMF where the lambda body method is private
  - An indy where the bootstrap method is not LMF

4 files changed, 29 insertions, 0 deletions

diff --git a/test/files/neg/inlineIndyLambdaPrivate.check b/test/files/neg/inlineIndyLambdaPrivate.check
new file mode 100644
index 0000000000..dbd142f59e
--- /dev/null
+++ b/test/files/neg/inlineIndyLambdaPrivate.check
@@ -0,0 +1,16 @@
+Test_2.scala:2: warning: A_1::test()Ljava/lang/String; could not be inlined:
+The callee A_1::test()Ljava/lang/String; contains the instruction INVOKEDYNAMIC m()LA_1$Fun; [
+      // handle kind 0x6 : INVOKESTATIC
+      java/lang/invoke/LambdaMetafactory.metafactory(Ljava/lang/invoke/MethodHandles$Lookup;Ljava/lang/String;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodType;Ljava/lang/invoke/MethodHandle;Ljava/lang/invoke/MethodType;)Ljava/lang/invoke/CallSite;
+      // arguments:
+      (Ljava/lang/String;)Ljava/lang/String;,
+      // handle kind 0x6 : INVOKESTATIC
+      A_1.lambda$test$0(Ljava/lang/String;)Ljava/lang/String;,
+      (Ljava/lang/String;)Ljava/lang/String;
+    ]
+that would cause an IllegalAccessError when inlined into class Test.
+  def foo = A_1.test
+                ^
+error: No warnings can be incurred under -Xfatal-warnings.
+one warning found
+one error found
diff --git a/test/files/neg/inlineIndyLambdaPrivate.flags b/test/files/neg/inlineIndyLambdaPrivate.flags
new file mode 100644
index 0000000000..01b466bd8c
--- /dev/null
+++ b/test/files/neg/inlineIndyLambdaPrivate.flags
@@ -0,0 +1 @@
+-Yopt:l:classpath -Yopt-inline-heuristics:everything -Yopt-warnings:_ -Xfatal-warnings
\ No newline at end of file
diff --git a/test/files/neg/inlineIndyLambdaPrivate/A_1.java b/test/files/neg/inlineIndyLambdaPrivate/A_1.java
new file mode 100644
index 0000000000..a9144a9fa6
--- /dev/null
+++ b/test/files/neg/inlineIndyLambdaPrivate/A_1.java
@@ -0,0 +1,9 @@
+public class A_1 {
+  interface Fun {
+    String m(String s);
+  }
+  public static final String test() {
+    Fun f = s -> s.trim();
+    return f.m(" eh ");
+  }
+}
diff --git a/test/files/neg/inlineIndyLambdaPrivate/Test_2.scala b/test/files/neg/inlineIndyLambdaPrivate/Test_2.scala
new file mode 100644
index 0000000000..dd59c05176
--- /dev/null
+++ b/test/files/neg/inlineIndyLambdaPrivate/Test_2.scala
@@ -0,0 +1,3 @@
+class Test {
+  def foo = A_1.test
+}