SI-5652 Mangle names of potentially public lambda lifted methods.

This can happen if they are accessed from an inner class. If a
subclass is happens to lift a public method to the same name,
a VerifyError ensues.

The enclosed tests:
 - demonstrate the absense of the VerifyError
 - show the names generated for the lifted methods (which are
   unchanged if not called from an inner class, or if lifted
   into a trait implementation class.)
 - ensure that the callers are rewritten to call the correct
   method when multiple with the same name are lifted.

It's not ideal that this phase needs a priori knowledge of the
later phases to perform this mangling. A better fix would defer
this until the point when the methods are publicised, and leave
the unmangled private method in place and install an public,
mangled forwarder.

1 files changed, 8 insertions, 0 deletions

diff --git a/test/files/run/t5652.check b/test/files/run/t5652.check
new file mode 100644
index 0000000000..11438ef217
--- /dev/null
+++ b/test/files/run/t5652.check
@@ -0,0 +1,8 @@
+public static final int T1$class.g$1(T1)
+public static int T1$class.f0(T1)
+public static void T1$class.$init$(T1)
+public final int A1.A1$$g$2()
+public int A1.f1()
+public final int A2.A2$$g$1()
+public int A2.f0()
+public int A2.f2()