From 935e01a1e4c0f0ac257c5a9b71bda50a9d441fa3 Mon Sep 17 00:00:00 2001
From: Jeff Hao <jeffhao@google.com>
Date: Fri, 20 Mar 2015 19:44:35 -0700
Subject: [PATCH] Fix interpreter to allow 0 size sparse switches.

Bug: 19827056
Change-Id: I12eaf717f1a4b9bd5e0c8e2a508df9da4e61c4ec
---
 runtime/interpreter/interpreter_common.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/runtime/interpreter/interpreter_common.h b/runtime/interpreter/interpreter_common.h
index 15396d6e9..7d413c5d4 100644
--- a/runtime/interpreter/interpreter_common.h
+++ b/runtime/interpreter/interpreter_common.h
@@ -317,7 +317,10 @@ static inline int32_t DoSparseSwitch(const Instruction* inst, const ShadowFrame&
   int32_t test_val = shadow_frame.GetVReg(inst->VRegA_31t(inst_data));
   DCHECK_EQ(switch_data[0], static_cast<uint16_t>(Instruction::kSparseSwitchSignature));
   uint16_t size = switch_data[1];
-  DCHECK_GT(size, 0);
+  // Return length of SPARSE_SWITCH if size is 0.
+  if (size == 0) {
+    return 3;
+  }
   const int32_t* keys = reinterpret_cast<const int32_t*>(&switch_data[2]);
   DCHECK(IsAligned<4>(keys));
   const int32_t* entries = keys + size;
-- 
2.11.0