From fa3091ef031da6c18478fdede12d7762634ee271 Mon Sep 17 00:00:00 2001
From: David Brazdil <dbrazdil@google.com>
Date: Tue, 19 Apr 2016 10:10:17 +0100
Subject: ART: Fix IsLinearOrderWellFormed in liveness analysis

Graph may contain nullptr in list of basic blocks when
the basic block is removed. So we must handle nullptr explicitly.

Bug: 28252537
Change-Id: If430939b8fe793e4a9c974936180d06c1a9f90c6
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>
---
 compiler/optimizing/ssa_liveness_analysis.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'compiler/optimizing/ssa_liveness_analysis.h')

diff --git a/compiler/optimizing/ssa_liveness_analysis.h b/compiler/optimizing/ssa_liveness_analysis.h
index 719feec468..40dab74a23 100644
--- a/compiler/optimizing/ssa_liveness_analysis.h
+++ b/compiler/optimizing/ssa_liveness_analysis.h
@@ -971,7 +971,7 @@ class LiveInterval : public ArenaObject<kArenaAllocSsaLiveness> {
 
   bool IsLinearOrderWellFormed(const HGraph& graph) {
     for (HBasicBlock* header : graph.GetBlocks()) {
-      if (!header->IsLoopHeader()) {
+      if (header == nullptr || !header->IsLoopHeader()) {
         continue;
       }
 
-- 
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