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From: olcott <polcott333@gmail.com>
Newsgroups: comp.theory
Subject: Re: Every sufficiently competent C programmer knows --- Very Stupid
 Mistake
Date: Tue, 11 Mar 2025 23:06:23 -0500
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On 3/11/2025 11:02 PM, Richard Heathfield wrote:
> On 12/03/2025 03:40, olcott wrote:
>> On 3/11/2025 10:32 PM, Richard Heathfield wrote:
>>> On 12/03/2025 02:29, olcott wrote:
>>>> The lack of a counter-example
>>>
>>> I gave you three upthread. I can give you a dozen more at the drop of 
>>> a hat if you want them, but here's one [...elided...]
>>>
> <snip>
> 
>>>
>>>> sufficiently proves that you
>>>> have no basis for *the exact meaning of my specific claim*
>>>
>>> The exact meaning of your specific claim is of no consequence
>>
>> You can't freaking correctly determine that nitwit unless
>> you first pay 100% attention to exactly what I said.
> 
> Oh, I have done so. It availed me naught, of course, because you have 
> the communication skills of a basilisk.
> 
>> Here  is is greatly dumbed down;
>> DDD correctly emulated by HHH DOES NOT HALT.
> It doesn't even start.
> 
> $ gcc hhh.c
> hhh.c: In function ‘Decide_Halting0’:
> hhh.c:265:32: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    265 |     PushBack(*execution_trace, (u32)*decoded, 
> sizeof(Decoded_Line_Of_Code));
>        |                                ^
> hhh.c:266:36: warning: cast to pointer from integer of different size [- 
> Wint-to-pointer-cast]
>    266 |     Aborted = 
> Needs_To_Be_Aborted0((Decoded_Line_Of_Code*)*execution_trace, 
> Address_of_H, P);
>        |                                    ^
> hhh.c: In function ‘Decide_Halting’:
> hhh.c:373:32: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    373 |     PushBack(*execution_trace, (u32)*decoded, 
> sizeof(Decoded_Line_Of_Code));
>        |                                ^
> hhh.c:374:35: warning: cast to pointer from integer of different size [- 
> Wint-to-pointer-cast]
>    374 |     Aborted = 
> Needs_To_Be_Aborted((Decoded_Line_Of_Code*)*execution_trace,
>        |                                   ^
> hhh.c: In function ‘HH1’:
> hhh.c:484:77: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    484 |   u32 Root = Init_Halts_HH(&Aborted, &execution_trace, 
> &decoded, &code_end, (u32)P,
>        |                    ^
> hhh.c:488:20: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    488 |   Init_slave_state((u32)P, (u32)I, End_Of_Code, slave_state, 
> slave_stack);
>        |                    ^
> hhh.c:488:28: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    488 |   Init_slave_state((u32)P, (u32)I, End_Of_Code, slave_state, 
> slave_stack);
>        |                            ^
> hhh.c: In function ‘H’:
> hhh.c:568:77: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    568 |   u32 Root = Init_Halts_HH(&Aborted, &execution_trace, 
> &decoded, &code_end, (u32)P,
>        |                    ^
> hhh.c:572:20: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    572 |   Init_slave_state((u32)P, (u32)I, End_Of_Code, slave_state, 
> slave_stack);
>        |                    ^
> hhh.c:572:28: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    572 |   Init_slave_state((u32)P, (u32)I, End_Of_Code, slave_state, 
> slave_stack);
>        |                            ^
> hhh.c: In function ‘HHH1’:
> hhh.c:646:77: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    646 |   u32 Root = Init_Halts_HH(&Aborted, &execution_trace, 
> &decoded, &code_end, (u32)P,
>        |                    ^
> hhh.c:651:21: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    651 |   Init_slave_state0((u32)P, End_Of_Code, slave_state, 
> slave_stack); // 2024-06-16
>        |                     ^
> hhh.c: In function ‘Address_of_Sipser_H’:
> hhh.c:733:77: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    733 |   u32 Root = Init_Halts_HH(&Aborted, &execution_trace, 
> &decoded, &code_end, (u32)P,
>        |                    ^
> hhh.c:738:21: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    738 |   Init_slave_state0((u32)P, End_Of_Code, slave_state, 
> slave_stack); // 2024-06-16
>        |                     ^
> hhh.c: In function ‘H1’:
> hhh.c:761:48: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    761 |   u32 End_Of_Code               = get_code_end((u32)H1);
>        |                                                ^
> hhh.c:762:35: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    762 |   u32 Address_of_H1             = (u32)H1;       // 2022-08-15
>        |                                   ^
> hhh.c:763:48: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    763 |   u32 code_end                  = get_code_end((u32)P);
>        |                                                ^
> hhh.c:769:26: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    769 |   u32  execution_trace = 
> (u32)Allocate(sizeof(Decoded_Line_Of_Code) * 10000);
>        |                          ^
> hhh.c:771:20: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    771 |   Init_slave_state((u32)P, (u32)I, End_Of_Code, slave_state, 
> slave_stack);
>        |                    ^
> hhh.c:771:28: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    771 |   Init_slave_state((u32)P, (u32)I, End_Of_Code, slave_state, 
> slave_stack);
>        |                            ^
> hhh.c:775:65: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    775 |                      &slave_state, &slave_stack, Address_of_H1, 
> (u32)P, (u32)I))
>        |        ^
> hhh.c:775:73: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    775 |                      &slave_state, &slave_stack, Address_of_H1, 
> (u32)P, (u32)I))
>        |                ^
> hhh.c: In function ‘H_prior’:
> hhh.c:794:48: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    794 |   u32 End_Of_Code               = get_code_end((u32)H_prior);
>        |                                                ^
> hhh.c:795:35: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    795 |   u32 Address_of_H              = (u32)H_prior;
>        |                                   ^
> hhh.c:796:48: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    796 |   u32 code_end                  = get_code_end((u32)P);
>        |                                                ^
> hhh.c:802:26: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    802 |   u32  execution_trace = 
> (u32)Allocate(sizeof(Decoded_Line_Of_Code) * 10000);
>        |                          ^
> hhh.c:805:20: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    805 |   Init_slave_state((u32)P, (u32)I, End_Of_Code, slave_state, 
> slave_stack);
>        |                    ^
> hhh.c:805:28: warning: cast from pointer to integer of different size [- 
> Wpointer-to-int-cast]
>    805 |   Init_slave_state((u32)P, (u32)I, End_Of_Code, slave_state, 
> slave_stack);
>        |                            ^
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