Built against master branch 801dd40666d1e6009920ad3ff755c7bb993b2a62:

    $ ./bitcoind -wallet=/tmp/wallet.dat
    Error: Error loading wallet /tmp/wallet.dat. -wallet parameter must only specify a filename (not a path).
    Segmentation fault
    $ 

It's crashing here:

    Thread 1 "bitcoin-shutoff" received signal SIGSEGV, Segmentation fault.
    CConnman::Stop (this=0x0) at net.cpp:2405
    2405	    if (threadMessageHandler.joinable())
    (gdb) where
    #0  CConnman::Stop (this=0x0) at net.cpp:2405
    #1  0x00005555555a57fb in Shutdown () at init.cpp:197
    #2  0x00005555555997fb in AppInit (argc=<optimized out>, argv=<optimized out>) at bitcoind.cpp:183
    #3  0x0000555555599a39 in main (argc=0, argv=0x0) at bitcoind.cpp:195
    (gdb) 
fFeeEstimatesInitialized = false;
    }
    
    if (pcoinsTip != nullptr) {
        FlushStateToDisk();
    }
    
    
    GetMainSignals().FlushBackgroundCallbacks();
    
    
    
    
    
    {
        LOCK(cs_main);
        if (pcoinsTip != nullptr) {
            FlushStateToDisk();
        }
        delete pcoinsTip;
        pcoinsTip = nullptr;
        delete pcoinscatcher;
        pcoinscatcher = nullptr;
        delete pcoinsdbview;
        pcoinsdbview = nullptr;
        delete pblocktree;
        pblocktree = nullptr;
    }
#ifdef ENABLE_WALLET
    StopWallets();