commit ca96b88b61f647d4f56d5d06321dda08a43bf92f
Author: Matt Corallo <git@bluematt.me>
Date:   Sun Mar 24 20:46:01 2013 -0400

    Revert "CheckBlock rule until 15-May for 10,000 BDB lock compatibility"
    
    This reverts commit 8c222dca4f961ad13ec64d690134a40d09b20813.

diff --git a/src/main.cpp b/src/main.cpp
index 51ada0a..9a06dbf 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2056,25 +2056,6 @@ bool CBlock::CheckBlock(CValidationState &state, bool fCheckPOW, bool fCheckMerk
     if (vtx.empty() || vtx.size() > MAX_BLOCK_SIZE || ::GetSerializeSize(*this, SER_NETWORK, PROTOCOL_VERSION) > MAX_BLOCK_SIZE)
         return state.DoS(100, error("CheckBlock() : size limits failed"));
 
-    // Special short-term limits to avoid 10,000 BDB lock limit:
-    if (GetBlockTime() > 1363039171 && // 11 March 2013, timestamp of block before the big fork
-        GetBlockTime() < 1368576000)  // 15 May 2013 00:00:00
-    {
-        // Rule is: #unique txids referenced <= 4,500
-        // ... to prevent 10,000 BDB lock exhaustion on old clients
-        set<uint256> setTxIn;
-        for (size_t i = 0; i < vtx.size(); i++)
-        {
-            setTxIn.insert(vtx[i].GetHash());
-            if (i == 0) continue; // skip coinbase txin
-            BOOST_FOREACH(const CTxIn& txin, vtx[i].vin)
-                setTxIn.insert(txin.prevout.hash);
-        }
-        size_t nTxids = setTxIn.size();
-        if (nTxids > 4500)
-            return error("CheckBlock() : 15 May maxlocks violation");
-    }
-
     // Check proof of work matches claimed amount
     if (fCheckPOW && !CheckProofOfWork(GetHash(), nBits))
         return state.DoS(50, error("CheckBlock() : proof of work failed"));
diff --git a/src/test/checkblock_tests.cpp b/src/test/checkblock_tests.cpp
deleted file mode 100644
index e167def..0000000
--- a/src/test/checkblock_tests.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-//
-// Unit tests for block.CheckBlock()
-//
-#include <algorithm>
-
-#include <boost/assign/list_of.hpp> // for 'map_list_of()'
-#include <boost/date_time/posix_time/posix_time_types.hpp>
-#include <boost/test/unit_test.hpp>
-#include <boost/foreach.hpp>
-
-#include "main.h"
-#include "wallet.h"
-#include "net.h"
-#include "util.h"
-
-BOOST_AUTO_TEST_SUITE(CheckBlock_tests)
-
-bool
-read_block(const std::string& filename, CBlock& block)
-{
-    namespace fs = boost::filesystem;
-    fs::path testFile = fs::current_path() / "test" / "data" / filename;
-#ifdef TEST_DATA_DIR
-    if (!fs::exists(testFile))
-    {
-        testFile = fs::path(BOOST_PP_STRINGIZE(TEST_DATA_DIR)) / filename;
-    }
-#endif
-    FILE* fp = fopen(testFile.string().c_str(), "rb");
-    if (!fp) return false;
-
-    fseek(fp, 8, SEEK_SET); // skip msgheader/size
-
-    CAutoFile filein = CAutoFile(fp, SER_DISK, CLIENT_VERSION);
-    if (!filein) return false;
-
-    filein >> block;
-
-    return true;
-}
-
-BOOST_AUTO_TEST_CASE(May15)
-{
-    // Putting a 1MB binary file in the git repository is not a great
-    // idea, so this test is only run if you manually download
-    // test/data/Mar12Fork.dat from
-    // http://sourceforge.net/projects/bitcoin/files/Bitcoin/blockchain/Mar12Fork.dat/download
-    unsigned int tMay15 = 1368576000;
-    SetMockTime(tMay15); // Test as if it was right at May 15
-
-    CBlock forkingBlock;
-    if (read_block("Mar12Fork.dat", forkingBlock))
-    {
-        CValidationState state;
-        BOOST_CHECK(!forkingBlock.CheckBlock(state, true, true));
-        BOOST_CHECK(!forkingBlock.CheckBlock(state, false, false));
-
-        // After May 15'th, big blocks are OK:
-        forkingBlock.nTime = tMay15; // Invalidates PoW
-        BOOST_CHECK(forkingBlock.CheckBlock(state, false, false));
-    }
-
-    SetMockTime(0);
-}
-
-BOOST_AUTO_TEST_SUITE_END()