[Bug sanitizer/80498] Simple program with address sanitizer and regex hangs

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80498

--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> ---
My constructor for main looks as follows:

_GLOBAL__sub_I_00099_1_main:
.LFB7137:
        .cfi_startproc
        pushq   %rbp
        .cfi_def_cfa_offset 16
        .cfi_offset 6, -16
        movq    %rsp, %rbp
        .cfi_def_cfa_register 6
        call    __asan_init
        call    __asan_version_mismatch_check_v6
        movl    $218, %esi
        movl    $.LASAN0, %edi
        call    __asan_register_globals
        popq    %rbp
        .cfi_def_cfa 7, 8
        ret
        .cfi_endproc

Please take a look in gdb where are you in the function (you need to use 'up'
and then either 'layout asm' or 'display/i $pc1: x/i $pc').

Do you build GCC with debugging symbols. It's strange as you should see call to
libasan library, as seen here:

#0  0x00007ffff6f0ad80 in __asan_init () from /usr/lib64/libasan.so.3
#1  0x0000000000404500 in _GLOBAL__sub_I_00099_1_main () at pr80498.cpp:11