[Bug middle-end/105469] "execution reached an unreachable program point" with -flto

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105469

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2022-05-04
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW

--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Backtrace with debuginfo:

$ g++ repro.ii -fsanitize=undefined -O3 -fwhole-program -g && ./a.out
0x7fffffffdb38repro.ii:29:24: runtime error: execution reached an unreachable
program point
    #0 0x401300 in Readonly_Journal::play_until_checkpoint(Writable&)
/home/marxin/Programming/testcases/repro.ii:29
    #1 0x401300 in Client_Data::update()
/home/marxin/Programming/testcases/repro.ii:63
    #2 0x401300 in
Trans_NS_joedb_Client<Client_Data>::Trans_NS_joedb_Client(Connection&,
Posix_File) /home/marxin/Programming/testcases/repro.ii:49
    #3 0x401300 in Client::Client()
/home/marxin/Programming/testcases/repro.ii:67
    #4 0x401300 in Buggy_Client::Buggy_Client()
/home/marxin/Programming/testcases/repro.ii:70
    #5 0x401300 in main /home/marxin/Programming/testcases/repro.ii:72
    #6 0x7ffff751f62f in __libc_start_call_main
../sysdeps/nptl/libc_start_call_main.h:58
    #7 0x7ffff751f6ef in __libc_start_main_impl ../csu/libc-start.c:392
    #8 0x401384 in _start (/home/marxin/Programming/testcases/a.out+0x401384)