#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*/ link(char *, char *);
int /*<<< orphan*/ printf(char *, char *);
int /*<<< orphan*/ unlink(char *);
int main() {
  unlink("malloc.c");
  printf("Using memory allocation package: %s\n", "sysmalloc.c");
  link("plainwrapper.c", "mallocwrapper.c");
  link("sysmalloc.c", "malloc.c");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xee2(%rip),%rdi
call   1030 <unlink@plt>
lea    0xeae(%rip),%rdi
lea    0xecc(%rip),%rsi
call   1040 <printf@plt>
lea    0xecc(%rip),%rdi
lea    0xed4(%rip),%rsi
call   1050 <link@plt>
lea    0xead(%rip),%rdi
lea    0xea9(%rip),%rsi
call   1050 <link@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %r14
push   %rbx
push   %rax
lea    0xeed(%rip),%r14
mov    %r14,%rdi
call   1030 <unlink@plt>
lea    0xeb6(%rip),%rdi
lea    0xed4(%rip),%rbx
mov    %rbx,%rsi
call   1040 <printf@plt>
lea    0xed1(%rip),%rdi
lea    0xed9(%rip),%rsi
call   1050 <link@plt>
mov    %rbx,%rdi
mov    %r14,%rsi
call   1050 <link@plt>
xor    %eax,%eax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [9 x i8] c"malloc.c\00"
@.str.1 = [37 x i8] c"Using memory allocation package: %s\0A\00"
@.str.2 = [12 x i8] c"sysmalloc.c\00"
@.str.3 = [15 x i8] c"plainwrapper.c\00"
@.str.4 = [16 x i8] c"mallocwrapper.c\00"
define i32 @main() {
%1 = alloca i32
store i32 0, i32* %1
%2 = call i32 @unlink(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%3 = call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0))
%4 = call i32 @link(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.4, i64 0, i64 0))
%5 = call i32 @link(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@.str = [9 x i8] c"malloc.c\00"
@.str.1 = [37 x i8] c"Using memory allocation package: %s\0A\00"
@.str.2 = [12 x i8] c"sysmalloc.c\00"
@.str.3 = [15 x i8] c"plainwrapper.c\00"
@.str.4 = [16 x i8] c"mallocwrapper.c\00"
define i32 @main() {
%1 = tail call i32 @unlink(i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
%2 = tail call i32 @printf(i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0))
%3 = tail call i32 @link(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @.str.3, i64 0, i64 0), i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.4, i64 0, i64 0))
%4 = tail call i32 @link(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([9 x i8], [9 x i8]* @.str, i64 0, i64 0))
ret i32 0
}