#define NULL ((void *)0)
typedef unsigned long size_t; // Customize by platform.
typedef long intptr_t;
typedef unsigned long uintptr_t;
typedef long scalar_t__; // Either arithmetic or pointer type.
/* By default, we understand bool (as a convenience). */
typedef int bool;
#define false 0
#define true 1

/* Forward declarations */

/* Type definitions */

/* Variables and functions */
int /*<<< orphan*/ printf(char *, char *);
int main() {
  char *list[] = {"first", "second", "third", NULL};
  for (char **p = list; *p != NULL; p++) {
    printf("%s\n", p[0]);
  }
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x40,%rsp
movl   $0x0,-0x4(%rbp)
mov    0x2cda(%rip),%rax
mov    %rax,-0x30(%rbp)
mov    0x2cd7(%rip),%rax
mov    %rax,-0x28(%rbp)
mov    0x2cd4(%rip),%rax
mov    %rax,-0x20(%rbp)
mov    0x2cd1(%rip),%rax
mov    %rax,-0x18(%rbp)
lea    -0x30(%rbp),%rax
mov    %rax,-0x38(%rbp)
mov    -0x38(%rbp),%rax
cmpq   $0x0,(%rax)
je     1185 <main+0x75>
mov    -0x38(%rbp),%rax
mov    (%rax),%rsi
lea    0xea4(%rip),%rdi
call   1030 <printf@plt>
mov    -0x38(%rbp),%rax
add    $0x8,%rax
mov    %rax,-0x38(%rbp)
jmp    1153 <main+0x43>
mov    -0x4(%rbp),%eax
add    $0x40,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
sub    $0x28,%rsp
movaps 0x2cf2(%rip),%xmm0
movaps %xmm0,0x10(%rsp)
movaps 0x2cd6(%rip),%xmm0
movaps %xmm0,(%rsp)
lea    0x8(%rsp),%rbx
lea    0xec6(%rip),%rsi
lea    0xed2(%rip),%r14
cs nopw 0x0(%rax,%rax,1)
nopl   0x0(%rax,%rax,1)
mov    %r14,%rdi
call   1030 <printf@plt>
mov    (%rbx),%rsi
add    $0x8,%rbx
test   %rsi,%rsi
jne    1150 <main+0x40>
xor    %eax,%eax
add    $0x28,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [6 x i8] c"first\00"
@.str.1 = [7 x i8] c"second\00"
@.str.2 = [6 x i8] c"third\00"
@__const.main.list = [4 x i8*] [i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i32 0, i32 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i32 0, i32 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i32 0, i32 0), i8* null]
@.str.3 = [4 x i8] c"%s\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca [4 x i8*]
%3 = alloca i8**
store i32 0, i32* %1
%4 = bitcast [4 x i8*]* %2 to i8*
%5 = getelementptr inbounds [4 x i8*], [4 x i8*]* %2, i64 0, i64 0
store i8** %5, i8*** %3
br label %6
6: ; preds = %15, %0
%7 = load i8**, i8*** %3
%8 = load i8*, i8** %7
%9 = icmp ne i8* %8, null
br i1 %9, label %10, label %18
10: ; preds = %6
%11 = load i8**, i8*** %3
%12 = getelementptr inbounds i8*, i8** %11, i64 0
%13 = load i8*, i8** %12
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i8* %13)
br label %15
15: ; preds = %10
%16 = load i8**, i8*** %3
%17 = getelementptr inbounds i8*, i8** %16, i32 1
store i8** %17, i8*** %3
br label %6
18: ; preds = %6
%19 = load i32, i32* %1
ret i32 %19
}

LLVM IR (-O2):
@.str = [6 x i8] c"first\00"
@.str.1 = [7 x i8] c"second\00"
@.str.2 = [6 x i8] c"third\00"
@__const.main.list = [4 x i8*] [i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i32 0, i32 0), i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str.1, i32 0, i32 0), i8* getelementptr inbounds ([6 x i8], [6 x i8]* @.str.2, i32 0, i32 0), i8* null]
@.str.3 = [4 x i8] c"%s\0A\00"
define i32 @main() {
%1 = alloca [4 x i8*]
%2 = bitcast [4 x i8*]* %1 to i8*
%3 = getelementptr inbounds [4 x i8*], [4 x i8*]* %1, i64 0, i64 0
br label %5
4: ; preds = %5
ret i32 0
5: ; preds = %0, %5
%6 = phi i8* [ %10, %5 ], [ getelementptr inbounds ([6 x i8], [6 x i8]* @.str, i64 0, i64 0), %0 ]
%7 = phi i8** [ %9, %5 ], [ %3, %0 ]
%8 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.3, i64 0, i64 0), i8* %6)
%9 = getelementptr inbounds i8*, i8** %7, i64 1
%10 = load i8*, i8** %9
%11 = icmp eq i8* %10, null
br i1 %11, label %4, label %5
}