If we pass wrong arguments to printf (i.e forget a comma between 2 arguments), compiler can not check it out, and main function can not be parsed.

[zzdmfk]

C code:
int printf(const char* str, ...);

struct dog
{
int a;
int b;
};

void set_dog(struct dog* d, int x)
{
d->b = x;
}

int main()
{
struct dog d;
set_dog(&d, 70);
//printf("hello world %i\r\n", d.b);
printf("hello world %i\r\n" d.b); //I forget a comma
return 0;
}

[nibblebits]

Please provide the compiler output

[zzdmfk]

Compiler outputs:
george@george-ubuntu:~/Desktop/gitcompiler/PeachCompiler$ ./main
section .data
section .text
extern printf
global set_dog
; set_dog function
set_dog:
push ebp
mov ebp, esp
push dword [ebp+12]
lea ebx, [ebp+8]
push ebx
pop ebx
mov ebx, [ebx]
add ebx, 4
push ebx
pop edx
pop eax
mov dword [edx], eax
pop ebp
ret
section .data
section .rodata
everything compiled file
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/11/../../../../lib32/Scrt1.o: in function _start': (.text+0x22): undefined reference to main'
collect2: error: ld returned 1 exit status
nasm -f elf32 ./test -o ./test.o && gcc -m32 ./test.o -o ./test

And I debugged it, found the function 'main' can not be parsed correctly in 'parse_function'.

[nibblebits]

Thanks for reporting the problem