Компилирую, запускаю, получаю «trap invalid opcode»

gdb --args <тут обычная командная строка запуска твоей проги>

(gdb) run
Starting program: /home/oleg/atari/atari Oregon\ Trail\ \(The\).bas
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".

Program received signal SIGILL, Illegal instruction.
0x0000555555555798 in ataribasic_readheader (aptr=0x55555556d2b0) at fileio.c:264
264     aptr->m_starp  = ataribasic_getpointer( aptr );
(gdb) disas
Dump of assembler code for function _Z21ataribasic_readheaderP13ataribasic_st:
   0x0000555555555704 <+0>:     endbr64
   0x0000555555555708 <+4>:     push   %rbp
   0x0000555555555709 <+5>:     mov    %rsp,%rbp
   0x000055555555570c <+8>:     sub    $0x8,%rsp
   0x0000555555555710 <+12>:    mov    %rdi,-0x8(%rbp)
   0x0000555555555714 <+16>:    mov    -0x8(%rbp),%rax
   0x0000555555555718 <+20>:    mov    %rax,%rdi
   0x000055555555571b <+23>:    call   0x5555555556c7 <_Z21ataribasic_getpointerP13ataribasic_st>
   0x0000555555555720 <+28>:    mov    -0x8(%rbp),%rdx
   0x0000555555555724 <+32>:    mov    %eax,0x4(%rdx)
   0x0000555555555727 <+35>:    mov    -0x8(%rbp),%rax
   0x000055555555572b <+39>:    mov    %rax,%rdi
   0x000055555555572e <+42>:    call   0x5555555556c7 <_Z21ataribasic_getpointerP13ataribasic_st>
   0x0000555555555733 <+47>:    mov    -0x8(%rbp),%rdx
   0x0000555555555737 <+51>:    mov    %eax,0x8(%rdx)
   0x000055555555573a <+54>:    mov    -0x8(%rbp),%rax
   0x000055555555573e <+58>:    mov    %rax,%rdi
   0x0000555555555741 <+61>:    call   0x5555555556c7 <_Z21ataribasic_getpointerP13ataribasic_st>
   0x0000555555555746 <+66>:    mov    -0x8(%rbp),%rdx
   0x000055555555574a <+70>:    mov    %eax,0x10(%rdx)
   0x000055555555574d <+73>:    mov    -0x8(%rbp),%rax
   0x0000555555555751 <+77>:    mov    %rax,%rdi
   0x0000555555555754 <+80>:    call   0x5555555556c7 <_Z21ataribasic_getpointerP13ataribasic_st>
   0x0000555555555759 <+85>:    mov    -0x8(%rbp),%rdx
   0x000055555555575d <+89>:    mov    %eax,0xc(%rdx)
   0x0000555555555760 <+92>:    mov    -0x8(%rbp),%rax
   0x0000555555555764 <+96>:    mov    %rax,%rdi
   0x0000555555555767 <+99>:    call   0x5555555556c7 <_Z21ataribasic_getpointerP13ataribasic_st>
   0x000055555555576c <+104>:   mov    -0x8(%rbp),%rdx
   0x0000555555555770 <+108>:   mov    %eax,0x14(%rdx)
   0x0000555555555773 <+111>:   mov    -0x8(%rbp),%rax
   0x0000555555555777 <+115>:   mov    %rax,%rdi
   0x000055555555577a <+118>:   call   0x5555555556c7 <_Z21ataribasic_getpointerP13ataribasic_st>
   0x000055555555577f <+123>:   mov    -0x8(%rbp),%rdx
   0x0000555555555783 <+127>:   mov    %eax,0x18(%rdx)
   0x0000555555555786 <+130>:   mov    -0x8(%rbp),%rax
   0x000055555555578a <+134>:   mov    %rax,%rdi
   0x000055555555578d <+137>:   call   0x5555555556c7 <_Z21ataribasic_getpointerP13ataribasic_st>
   0x0000555555555792 <+142>:   mov    -0x8(%rbp),%rdx
   0x0000555555555796 <+146>:   mov    %eax,(%rdx)
=> 0x0000555555555798 <+148>:   ud2
End of assembler dump.
(gdb) bt
#0  0x0000555555555798 in ataribasic_readheader (aptr=0x55555556d2b0) at fileio.c:264
#1  0x00005555555578ea in ataribasic_listfile (aptr=0x55555556d2b0) at process.c:53
#2  0x0000555555557c37 in process_file (pfilename=0x7fffffffd56e "Oregon Trail (The).bas") at main.c:90
#3  0x0000555555557e5a in process_arguments (argc=2, argv=0x7fffffffd088) at main.c:183
#4  0x0000555555557e95 in main (argc=2, argv=0x7fffffffd088) at main.c:194
(gdb) 

[~/repo/atariconv/src]-[%] valgrind ./atari ~/Downloads/The_Oregon_Trail.zip
==554591== Memcheck, a memory error detector
==554591== Copyright (C) 2002-2024, and GNU GPL'd, by Julian Seward et al.
==554591== Using Valgrind-3.25.1 and LibVEX; rerun with -h for copyright info
==554591== Command: ./atari /home/v/Downloads/The_Oregon_Trail.zip
==554591== 
==554591== valgrind: Unrecognised instruction at address 0x40015f0.
==554591==    at 0x40015F0: ataribasic_readheader(ataribasic_st*) (fileio.c:264)
==554591==    by 0x400350D: ataribasic_listfile(ataribasic_st*) (process.c:53)
==554591==    by 0x4003845: process_file(char*) (main.c:90)
==554591==    by 0x4003B20: process_arguments(int, char**) (main.c:183)
==554591==    by 0x4003B57: main (main.c:194)

0000000000001560 <_Z21ataribasic_readheaderP13ataribasic_st>: 
[...]
    15f0:       0f 0b                   ud2

00000000000015f2 <_Z23ataribasic_readvarnamesP13ataribasic_st>:

error = ataribasic_readvarvalues( aptr );

if (aptr->options.m_fixvartable )
        {
        ataribasic_varnamefromtype( aptr );
        }

if ( aptr->options.m_showvariables )
        {
        ataribasic_varname_display( aptr );
        }

if ( error )
        {
        ataribasic_error( aptr );
        }

void ataribasic_error( ATARIBASIC *aptr )
{
printf( "Error:\n");
}