miner: Avoid stack-use-after-return in validationinterface

This is achieved by switching to a shared_ptr.

Also, switch the validationinterfaces in the tests to use shared_ptrs
for the same reason.

1 files changed, 5 insertions, 5 deletions

diff --git a/src/test/validation_block_tests.cpp b/src/test/validation_block_tests.cpp
index c026e0f43d..eed26511dd 100644
--- a/src/test/validation_block_tests.cpp
+++ b/src/test/validation_block_tests.cpp
@@ -32,7 +32,7 @@ struct MinerTestingSetup : public RegTestingSetup {
 
 BOOST_FIXTURE_TEST_SUITE(validation_block_tests, MinerTestingSetup)
 
-struct TestSubscriber : public CValidationInterface {
+struct TestSubscriber final : public CValidationInterface {
     uint256 m_expected_tip;
 
     explicit TestSubscriber(uint256 tip) : m_expected_tip(tip) {}
@@ -175,8 +175,8 @@ BOOST_AUTO_TEST_CASE(processnewblock_signals_ordering)
         LOCK(cs_main);
         initial_tip = ::ChainActive().Tip();
     }
-    TestSubscriber sub(initial_tip->GetBlockHash());
-    RegisterValidationInterface(&sub);
+    auto sub = std::make_shared<TestSubscriber>(initial_tip->GetBlockHash());
+    RegisterSharedValidationInterface(sub);
 
     // create a bunch of threads that repeatedly process a block generated above at random
     // this will create parallelism and randomness inside validation - the ValidationInterface
@@ -206,10 +206,10 @@ BOOST_AUTO_TEST_CASE(processnewblock_signals_ordering)
     }
     SyncWithValidationInterfaceQueue();
 
-    UnregisterValidationInterface(&sub);
+    UnregisterSharedValidationInterface(sub);
 
     LOCK(cs_main);
-    BOOST_CHECK_EQUAL(sub.m_expected_tip, ::ChainActive().Tip()->GetBlockHash());
+    BOOST_CHECK_EQUAL(sub->m_expected_tip, ::ChainActive().Tip()->GetBlockHash());
 }
 
 /**