gcc10 reports:
../src/Interpreters/MySQL/InterpretersMySQLDDLQuery.cpp:354:44: warning: moving a local object in a return statement prevents copy elision [-Wpessimizing-move]
354 | return std::move(column_declaration);
stack trace:
(gdb) bt
0 0x00007ffff7dda355 in raise () from /usr/lib/libc.so.6
1 0x00007ffff7dc3853 in abort () from /usr/lib/libc.so.6
2 0x0000000013a78180 in abort_message (format=format@entry=0x5781e10 "terminate_handler unexpectedly threw an exception") at abort_message.cpp:76
3 0x0000000013a899ff in std::__terminate (func=<optimized out>) at cxa_handlers.cpp:67
4 0x0000000013a771a1 in __cxxabiv1::call_terminate (native_exception=native_exception@entry=true, unwind_exception=unwind_exception@entry=0x7ffff70e9060) at cxa_personality.cpp:323
5 0x0000000013a77669 in __cxxabiv1::scan_eh_tab (results=..., actions=<optimized out>, native_exception=native_exception@entry=true, unwind_exception=0x7ffff70e9060, context=context@entry=0x7fffffffc3a0) at cxa_personality.cpp:887
6 0x0000000013a77bde in __cxxabiv1::__gxx_personality_v0 (version=<optimized out>, actions=<optimized out>, exceptionClass=<optimized out>, unwind_exception=0x7ffff70e9060, context=0x7fffffffc3a0) at cxa_personality.cpp:969
7 0x0000000013a962d7 in unwind_phase1 (exception_object=0x7ffff70e9060, cursor=0x7fffffffc3a0, uc=0x7fffffffc2f0) at UnwindLevel1.c:98
8 _Unwind_RaiseException (exception_object=exception_object@entry=0x7ffff70e9060) at UnwindLevel1.c:363
9 0x0000000013a8929b in __cxxabiv1::__cxa_rethrow () at cxa_exception.cpp:607
10 0x000000000f170ad2 in DB::WriteBuffer::next (this=0x7fffffffc510) at WriteBuffer.h:52
11 writeSignalIDtoSignalPipe (sig=<optimized out>) at BaseDaemon.cpp:111
12 <signal handler called>
13 0x00007ffff7e9895b in munmap () from /usr/lib/libc.so.6
14 0x00007ffff7f7e255 in free_stacks () from /usr/lib/libpthread.so.0
15 0x00007ffff7f7e6aa in __deallocate_stack () from /usr/lib/libpthread.so.0
16 0x00007ffff7f80898 in __pthread_clockjoin_ex () from /usr/lib/libpthread.so.0
17 0x0000000013a759f7 in std::__1::__libcpp_thread_join (__t=0x7fff0aa2b090) at __threading_support:409
18 std::__1:🧵:join (this=this@entry=0x7fff0aa2b090) at thread.cpp:56
19 0x000000000a4c9399 in ThreadPoolImpl<std::__1::thread>::finalize (this=this@entry=0x7ffff7053900) at list:355
20 0x000000000a4c9426 in ThreadPoolImpl<std::__1::thread>::~ThreadPoolImpl (this=0x7ffff7053900, __in_chrg=<optimized out>) at ThreadPool.cpp:172
21 0x000000000a4c8a9c in GlobalThreadPool::~GlobalThreadPool (this=0x7ffff7053900, __in_chrg=<optimized out>) at ThreadPool.h:132
22 std::__1::default_delete<GlobalThreadPool>::operator() (__ptr=0x7ffff7053900, this=<optimized out>) at memory:2363
23 std::__1::unique_ptr<GlobalThreadPool, std::__1::default_delete<GlobalThreadPool> >::reset (__p=0x0, this=<optimized out>) at memory:2618
24 std::__1::unique_ptr<GlobalThreadPool, std::__1::default_delete<GlobalThreadPool> >::~unique_ptr (this=<optimized out>, __in_chrg=<optimized out>) at memory:2572
25 0x00007ffff7ddcc57 in __run_exit_handlers () from /usr/lib/libc.so.6
26 0x00007ffff7ddcdfe in exit () from /usr/lib/libc.so.6
27 0x00007ffff7dc5009 in __libc_start_main () from /usr/lib/libc.so.6
28 0x000000000a48702e in _start () at new:340
Otherwise the following query will be optimized incorrectly:
SELECT
*,
any(arrayJoin([[], []]))
FROM numbers(1)
GROUP BY number
And the result will be:
┌─number─┬─arrayJoin(array(array(), array()))─┐
│ 0 │ [] │
│ 0 │ [] │
└────────┴────────────────────────────────────┘
While should be:
┌─number─┬─any(arrayJoin(array(array(), array())))─┐
│ 0 │ [] │
└────────┴─────────────────────────────────────────┘
