extern int __start[];
extern int __end[];

extern void bar(int *);

void foo()
{
    for (int *x = __start; x != __end; ++x)
        bar(x);
}

/*
 * $ gcc -O3 -c arrays.c && objdump -d arrays.o
 *
 * arrays.o:     file format elf64-x86-64
 *
 *
 * Disassembly of section .text:
 *
 * 0000000000000000 <foo>:
 *    0:   53                      push   %rbx
 *    1:   bb 00 00 00 00          mov    $0x0,%ebx
 *    6:   66 2e 0f 1f 84 00 00    nopw   %cs:0x0(%rax,%rax,1)
 *    d:   00 00 00
 *   10:   48 89 df                mov    %rbx,%rdi
 *   13:   48 83 c3 04             add    $0x4,%rbx
 *   17:   e8 00 00 00 00          callq  1c <foo+0x1c>
 *   1c:   eb f2                   jmp    10 <foo+0x10>
*/