--source include/have_innodb.inc 

CREATE OR REPLACE TABLE t (a INT) ENGINE=INNODB;

SELECT @@innodb_io_capacity;

SELECt @@innodb_io_capacity_max;

SET GLOBAL innodb_io_capacity=18446744073709551615;

SET GLOBAL innodb_max_dirty_pages_pct=1;

CREATE OR REPLACE TABLE t (a INT) ENGINE=INNODB;

CREATE OR REPLACE TABLE t (a INT) ENGINE=INNODB;

CREATE OR REPLACE TABLE t (a INT) ENGINE=INNODB;

CREATE OR REPLACE TABLE t (a INT) ENGINE=INNODB;

CREATE OR REPLACE TABLE t (a INT) ENGINE=INNODB;

CREATE OR REPLACE TABLE t (a INT) ENGINE=INNODB;

/test/11.8_opt_san/storage/innobase/buf/buf0flu.cc:2302:19: runtime error: 1.85291e+19 is outside the range of representable values of type 'unsigned long'

    #0 0x557d0b95b4b3 in page_cleaner_flush_pages_recommendation(unsigned long, unsigned long, double, unsigned long, double) /test/11.8_opt_san/storage/innobase/buf/buf0flu.cc:2302:19

    #1 0x557d0b95b4b3 in buf_flush_page_cleaner() /test/11.8_opt_san/storage/innobase/buf/buf0flu.cc:2619:18

    #2 0x14ffc48ecdb3 in execute_native_thread_routine /build/gcc-14-ig5ci0/gcc-14-14.2.0/build/x86_64-linux-gnu/libstdc++-v3/src/c++11/../../../../../src/libstdc++-v3/src/c++11/thread.cc:104:18

    #3 0x557d0930695c in asan_thread_start(void*) asan_interceptors.cpp.o

    #4 0x14ffc449caa3 in start_thread nptl/pthread_create.c:447:8

    #5 0x14ffc4529c3b in clone3 misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

SUMMARY: UndefinedBehaviorSanitizer: float-cast-overflow /test/11.8_opt_san/storage/innobase/buf/buf0flu.cc:2302:19 

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

  # Note: It is strongly recommended to uninstall all old Clang & LLVM packages (ref  dpkg --list | grep -iE 'clang|llvm'  and use  apt purge  and  dpkg --purge  to remove the packages), before following these steps

     # Note: 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

Compiled with: "-DCMAKE_C_COMPILER=/usr/bin/clang -DCMAKE_CXX_COMPILER=/usr/bin/clang++ -DCMAKE_C{,XX}_FLAGS='-march=native -mtune=native'" and:

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

Set before execution:

    export UBSAN_OPTIONS=print_stacktrace=1:report_error_type=1   # And you may also want to supress UBSAN startup issues using 'suppressions=UBSAN.filter' in UBSAN_OPTIONS. For an example of UBSAN.filter, which includes current startup issues see: https://github.com/mariadb-corporation/mariadb-qa/blob/master/UBSAN.filter