Throwing InvalidMemoryOperationError

[Etienne Cimon via Digitalmars-d]

On Thursday, 4 June 2015 at 17:43:35 UTC, Adam D. Ruppe wrote:
> If int 3 doesn't work for some reason btw, you could always 
> just deliberately write to a null pointer and trigger a 
> segfault in the overridden function, would have the same result 
> in the debugger.
>
> I feel like this onError thing is meant to be overridable by 
> importing core.exception too, but I don't see that in the 
> source. The linker-based override definately works today though!

So far I've tried the null pointer to get a segmentation fault. 
It failed. I'm trying to rebuild gdb because this error is what I 
got:

      Message: Process 61701 (gdb) of user 0 dumped core.

                 Stack trace of thread 61701:
                 #0  0x0000000000629bdf make_vector_type (gdb)
                 #1  0x0000000000670a18 read_type_die (gdb)
                 #2  0x000000000066ee87 lookup_die_type (gdb)
                 #3  0x000000000067002a read_type_die (gdb)
                 #4  0x000000000066ee87 lookup_die_type (gdb)
                 #5  0x0000000000672aeb new_symbol_full (gdb)
                 #6  0x0000000000674e1f process_die (gdb)
                 #7  0x0000000000674a2b process_die (gdb)
                 #8  0x0000000000675031 process_die (gdb)
                 #9  0x0000000000678e57 dw2_do_instantiate_symtab 
(gdb)
                 #10 0x0000000000679f38 dwarf2_read_symtab (gdb)
                 #11 0x00000000005e4451 psymtab_to_symtab (gdb)
                 #12 0x00000000005e54d3 
find_pc_sect_symtab_from_partial (g
                 #13 0x00000000005e0143 find_pc_sect_symtab (gdb)
                 #14 0x00000000005dc3dd blockvector_for_pc_sect 
(gdb)
                 #15 0x00000000005dc57d block_for_pc (gdb)
                 #16 0x00000000006e70bb inline_frame_sniffer (gdb)
                 #17 0x00000000006e52c6 frame_unwind_try_unwinder 
(gdb)
                 #18 0x00000000006e567f frame_unwind_find_by_frame 
(gdb)
                 #19 0x00000000006e1d2b get_prev_frame_if_no_cycle 
(gdb)
                 #20 0x00000000006e4029 get_prev_frame_always (gdb)
                 #21 0x00000000006e4761 get_prev_frame (gdb)
                 #22 0x00000000006e4a3c unwind_to_current_frame 
(gdb)
                 #23 0x0000000000610b71 catch_exceptions_with_msg 
(gdb)
                 #24 0x00000000006e1e40 get_current_frame (gdb)
                 #25 0x0000000000603909 
handle_inferior_event.part.32 (gdb)
                 #26 0x00000000006055ee fetch_inferior_event (gdb)
                 #27 0x000000000061c7f2 inferior_event_handler 
(gdb)
                 #28 0x000000000061a7d1 process_event (gdb)
                 #29 0x000000000061abca gdb_do_one_event (gdb)
                 #30 0x000000000061ae3e start_event_loop (gdb)
                 #31 0x0000000000613c13 captured_command_loop (gdb)
                 #32 0x0000000000610d3a catch_errors (gdb)
                 #33 0x0000000000615526 captured_main (gdb)
                 #34 0x0000000000610d3a catch_errors (gdb)
                 #35 0x000000000061568b gdb_main (gdb)
                 #36 0x00000000004604a5 main (gdb)
                 #37 0x00007f3d3893ffe0 __libc_start_main 
(libc.so.6)
                 #38 0x00000000004604e8 _start (gdb)