#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 const *, char const **, char const *);
int /*<<< orphan*/ puts(char const *);
int main(void) {
  const char *mesg = "Don't be a fool.";
  const char *copy;
  copy = mesg;
  puts(copy);
  printf("mesg = %s, &mesg = %p, value = %p\n", mesg, &mesg, mesg);
  printf("copy = %s, &copy = %p, value = %p\n", copy, &copy, copy);
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
movl   $0x0,-0x4(%rbp)
lea    0xeca(%rip),%rax
mov    %rax,-0x10(%rbp)
mov    -0x10(%rbp),%rax
mov    %rax,-0x18(%rbp)
mov    -0x18(%rbp),%rdi
call   1030 <puts@plt>
mov    -0x10(%rbp),%rsi
mov    -0x10(%rbp),%rcx
lea    0xeb7(%rip),%rdi
lea    -0x10(%rbp),%rdx
call   1040 <printf@plt>
mov    -0x18(%rbp),%rsi
mov    -0x18(%rbp),%rcx
lea    0xec2(%rip),%rdi
lea    -0x18(%rbp),%rdx
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x10,%rsp
lea    0xed4(%rip),%rbx
mov    %rbx,0x8(%rsp)
mov    %rbx,(%rsp)
mov    %rbx,%rdi
call   1030 <puts@plt>
lea    0xecd(%rip),%rdi
lea    0x8(%rsp),%rdx
mov    %rbx,%rsi
mov    %rbx,%rcx
call   1040 <printf@plt>
lea    0xed9(%rip),%rdi
mov    %rsp,%rdx
mov    %rbx,%rsi
mov    %rbx,%rcx
call   1040 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbx
ret

LLVM IR (-O0):
@.str = [17 x i8] c"Don't be a fool.\00"
@.str.1 = [35 x i8] c"mesg = %s, &mesg = %p, value = %p\0A\00"
@.str.2 = [35 x i8] c"copy = %s, &copy = %p, value = %p\0A\00"
define i32 @main() {
%1 = alloca i32
%2 = alloca i8*
%3 = alloca i8*
store i32 0, i32* %1
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8** %2
%4 = load i8*, i8** %2
store i8* %4, i8** %3
%5 = load i8*, i8** %3
%6 = call i32 @puts(i8* %5)
%7 = load i8*, i8** %2
%8 = load i8*, i8** %2
%9 = call i32 @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.1, i64 0, i64 0), i8* %7, i8** %2, i8* %8)
%10 = load i8*, i8** %3
%11 = load i8*, i8** %3
%12 = call i32 @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.2, i64 0, i64 0), i8* %10, i8** %3, i8* %11)
ret i32 0
}

LLVM IR (-O2):
@.str = [17 x i8] c"Don't be a fool.\00"
@.str.1 = [35 x i8] c"mesg = %s, &mesg = %p, value = %p\0A\00"
@.str.2 = [35 x i8] c"copy = %s, &copy = %p, value = %p\0A\00"
define i32 @main() {
%1 = alloca i8*
%2 = alloca i8*
%3 = bitcast i8** %1 to i8*
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8** %1
%4 = bitcast i8** %2 to i8*
store i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8** %2
%5 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0))
%6 = call i32 @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.1, i64 0, i64 0), i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8** %1, i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0))
%7 = call i32 @printf(i8* getelementptr inbounds ([35 x i8], [35 x i8]* @.str.2, i64 0, i64 0), i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0), i8** %2, i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str, i64 0, i64 0))
ret i32 0
}