SELECT ST_WITHIN (ST_UNION (ST_GEOMFROMTEXT ('POINT(1 1)'),ST_GEOMFROMTEXT ('MULTIPOINT(2 2,3 3)')),ST_INTERSECTION (ST_GEOMFROMTEXT ('POINT(0 0)'),ST_GEOMFROMTEXT ('POINT(1 1)')));

/test/11.4_dbg_san/sql/spatial.cc:3340:10: runtime error: applying non-zero offset 1 to null pointer

    #0 0x563c31ec12c6 in Gis_geometry_collection::init_from_opresult(String*, char const*, unsigned int) /test/11.4_dbg_san/sql/spatial.cc:3340:10

    #1 0x563c31e6c26e in Geometry::create_from_opresult(Geometry_buffer*, String*, Gcalc_result_receiver&) /test/11.4_dbg_san/sql/spatial.cc:697:15

    #2 0x563c3150e354 in Item_func_spatial_operation::val_str(String*) /test/11.4_dbg_san/sql/item_geofunc.cc:1582:8

    #3 0x563c315047df in Geometry_ptr_with_buffer_and_mbr::construct(Item*, String*) /test/11.4_dbg_san/sql/item_geofunc.cc:1354:24

    #4 0x563c31506938 in Item_func_spatial_precise_rel::val_bool() /test/11.4_dbg_san/sql/item_geofunc.cc:1411:24

    #5 0x563c2dd3bb5b in Item_bool_func::val_int() /test/11.4_dbg_san/sql/item_cmpfunc.h:249:12

    #6 0x563c3022d7fb in Type_handler::Item_send_long(Item*, Protocol*, st_value*) const /test/11.4_dbg_san/sql/sql_type.cc:7715:22

    #7 0x563c3027938c in Type_handler_long::Item_send(Item*, Protocol*, st_value*) const /test/11.4_dbg_san/sql/sql_type.h:5851:12

    #8 0x563c2db7abd7 in Item::send(Protocol*, st_value*) /test/11.4_dbg_san/sql/item.h:1261:28

    #9 0x563c2de20bc1 in Protocol::send_result_set_row(List<Item>*) /test/11.4_dbg_san/sql/protocol.cc:1333:15

    #10 0x563c2e4486fa in select_send::send_data(List<Item>&) /test/11.4_dbg_san/sql/sql_class.cc:3245:17

    #11 0x563c2ee382a0 in select_result_sink::send_data_with_check(List<Item>&, st_select_lex_unit*, unsigned long long) /test/11.4_dbg_san/sql/sql_class.h:6092:12

    #12 0x563c2ee326a3 in JOIN::exec_inner() /test/11.4_dbg_san/sql/sql_select.cc:4916:22

    #13 0x563c2ee2eaaa in JOIN::exec() /test/11.4_dbg_san/sql/sql_select.cc:4828:8

    #14 0x563c2eccddf9 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /test/11.4_dbg_san/sql/sql_select.cc:5358:21

    #15 0x563c2ecc94b7 in handle_select(THD*, LEX*, select_result*, unsigned long long) /test/11.4_dbg_san/sql/sql_select.cc:642:10

    #16 0x563c2e9b33e0 in execute_sqlcom_select(THD*, TABLE_LIST*) /test/11.4_dbg_san/sql/sql_parse.cc:6169:12

    #17 0x563c2e953e7c in mysql_execute_command(THD*, bool) /test/11.4_dbg_san/sql/sql_parse.cc:3962:12

    #18 0x563c2e8fa489 in mysql_parse(THD*, char*, unsigned int, Parser_state*) /test/11.4_dbg_san/sql/sql_parse.cc:7893:18

    #19 0x563c2e8db783 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /test/11.4_dbg_san/sql/sql_parse.cc:1905:7

    #20 0x563c2e9043e6 in do_command(THD*, bool) /test/11.4_dbg_san/sql/sql_parse.cc:1418:17

    #21 0x563c2fa4c896 in do_handle_one_connection(CONNECT*, bool) /test/11.4_dbg_san/sql/sql_connect.cc:1429:11

    #22 0x563c2fa4b05d in handle_one_connection /test/11.4_dbg_san/sql/sql_connect.cc:1341:5

    #23 0x563c2dade9bc in asan_thread_start(void*) asan_interceptors.cpp.o

    #24 0x146875a9ca93 in start_thread nptl/pthread_create.c:447:8

    #25 0x146875b29c3b in clone3 misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

SUMMARY: UndefinedBehaviorSanitizer: nullptr-with-nonzero-offset /test/11.4_dbg_san/sql/spatial.cc:3340:10

Compiled with a recent version of Clang (I used Clang 18.1.3) with LLVM 18:

# llvm-17-linker-tools installs /usr/lib/llvm-17/lib/LLVMgold.so, which is needed for compilation, and LLVMgold.so is no longer included in LLVM 18

sudo apt install clang llvm-18 llvm-18-linker-tools llvm-18-runtime llvm-18-tools llvm-18-dev libstdc++-14-dev llvm-dev llvm-17-linker-tools

sudo ln -s /usr/lib/llvm-17/lib/LLVMgold.so /usr/lib/llvm-18/lib/LLVMgold.so

    -DWITH_ASAN=ON -DWITH_ASAN_SCOPE=ON -DWITH_UBSAN=ON -DWSREP_LIB_WITH_ASAN=ON

Set before execution:

    export UBSAN_OPTIONS=suppressions=/home/roel/mariadb-qa/UBSAN.filter:print_stacktrace=1:report_error_type=1