Handle parenthese in execution

[ZifFiji]

❯ valgrind ./42sh
==145947== Memcheck, a memory error detector
==145947== Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward et al.
==145947== Using Valgrind-3.22.0 and LibVEX; rerun with -h for copyright info
==145947== Command: ./42sh
==145947== 
➜ 42sh on  parser-lexer ❯ (ls)
==145947== Use of uninitialised value of size 8
==145947==    at 0x404550: search_and_run_builtins (compute_command.c:43)
==145947==    by 0x404868: compute_cmd (compute_command.c:128)
==145947==    by 0x4043A6: compute_pipe (compute_pipe.c:25)
==145947==    by 0x4042FA: compute_or (compute_or.c:25)
==145947==    by 0x404255: compute_and (compute_and.c:25)
==145947==    by 0x4041EA: compute_semicolon (compute_semicolon.c:24)
==145947==    by 0x404188: compute_root (compute_root.c:22)
==145947==    by 0x402650: minishell (minishell.c:69)
==145947==    by 0x408101: main (main.c:12)
==145947== 
==145947== Invalid read of size 8
==145947==    at 0x404550: search_and_run_builtins (compute_command.c:43)
==145947==    by 0x404868: compute_cmd (compute_command.c:128)
==145947==    by 0x4043A6: compute_pipe (compute_pipe.c:25)
==145947==    by 0x4042FA: compute_or (compute_or.c:25)
==145947==    by 0x404255: compute_and (compute_and.c:25)
==145947==    by 0x4041EA: compute_semicolon (compute_semicolon.c:24)
==145947==    by 0x404188: compute_root (compute_root.c:22)
==145947==    by 0x402650: minishell (minishell.c:69)
==145947==    by 0x408101: main (main.c:12)
==145947==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==145947== 
==145947== 
==145947== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==145947==  Access not within mapped region at address 0x0
==145947==    at 0x404550: search_and_run_builtins (compute_command.c:43)
==145947==    by 0x404868: compute_cmd (compute_command.c:128)
==145947==    by 0x4043A6: compute_pipe (compute_pipe.c:25)
==145947==    by 0x4042FA: compute_or (compute_or.c:25)
==145947==    by 0x404255: compute_and (compute_and.c:25)
==145947==    by 0x4041EA: compute_semicolon (compute_semicolon.c:24)
==145947==    by 0x404188: compute_root (compute_root.c:22)
==145947==    by 0x402650: minishell (minishell.c:69)
==145947==    by 0x408101: main (main.c:12)
==145947==  If you believe this happened as a result of a stack
==145947==  overflow in your program's main thread (unlikely but
==145947==  possible), you can try to increase the size of the
==145947==  main thread stack using the --main-stacksize= flag.
==145947==  The main thread stack size used in this run was 8388608.
==145947== 
==145947== HEAP SUMMARY:
==145947==     in use at exit: 6,144 bytes in 219 blocks
==145947==   total heap usage: 295 allocs, 76 frees, 25,518 bytes allocated
==145947== 
==145947== LEAK SUMMARY:
==145947==    definitely lost: 467 bytes in 22 blocks
==145947==    indirectly lost: 48 bytes in 2 blocks
==145947==      possibly lost: 0 bytes in 0 blocks
==145947==    still reachable: 5,629 bytes in 195 blocks
==145947==         suppressed: 0 bytes in 0 blocks
==145947== Rerun with --leak-check=full to see details of leaked memory
==145947== 
==145947== Use --track-origins=yes to see where uninitialised values come from
==145947== For lists of detected and suppressed errors, rerun with: -s
==145947== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)
[1]    145947 segmentation fault (core dumped)  valgrind ./42sh

Il faut juste prendre en compte que la structure command peut ne pas avoir de exec_name mais seulement un sub_shell qui lui contient des commandes etc