#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*/ CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_bad();
int /*<<< orphan*/ CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_good();
int /*<<< orphan*/ printf(char *);
int /*<<< orphan*/ srand(unsigned int);
scalar_t__ time(int /*<<< orphan*/ *);
int main(int argc, char *argv[]) {
  srand((unsigned)time(NULL));
  printf("Calling good()...\n");
  CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_good();
  printf("Finished good()\n");
  printf("Calling bad()...\n");
  CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_bad();
  printf("Finished bad()\n");
  return 0;
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
movl   $0x0,-0x4(%rbp)
mov    %edi,-0x8(%rbp)
mov    %rsi,-0x10(%rbp)
xor    %eax,%eax
mov    %eax,%edi
call   1050 <time@plt>
mov    %eax,%edi
call   1040 <srand@plt>
lea    0xe83(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1060 <CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_good@plt>
lea    0xe83(%rip),%rdi
call   1030 <printf@plt>
lea    0xe88(%rip),%rdi
call   1030 <printf@plt>
mov    $0x0,%al
call   1070 <CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_bad@plt>
lea    0xe87(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rax
xor    %edi,%edi
call   1050 <time@plt>
mov    %eax,%edi
call   1040 <srand@plt>
lea    0xe9a(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
call   1060 <CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_good@plt>
lea    0xe99(%rip),%rdi
call   1030 <puts@plt>
lea    0xe9d(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
call   1070 <CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_bad@plt>
lea    0xe9b(%rip),%rdi
call   1030 <puts@plt>
xor    %eax,%eax
pop    %rcx
ret

LLVM IR (-O0):
@.str = [19 x i8] c"Calling good()...\0A\00"
@.str.1 = [17 x i8] c"Finished good()\0A\00"
@.str.2 = [18 x i8] c"Calling bad()...\0A\00"
@.str.3 = [16 x i8] c"Finished bad()\0A\00"
define i32 @main(i32 %0, i8** %1) {
%3 = alloca i32
%4 = alloca i32
%5 = alloca i8**
store i32 0, i32* %3
store i32 %0, i32* %4
store i8** %1, i8*** %5
%6 = call i64 @time(i32* null)
%7 = trunc i64 %6 to i32
%8 = call i32 @srand(i32 %7)
%9 = call i32 @printf(i8* getelementptr inbounds ([19 x i8], [19 x i8]* @.str, i64 0, i64 0))
%10 = call i32 (...) @CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_good()
%11 = call i32 @printf(i8* getelementptr inbounds ([17 x i8], [17 x i8]* @.str.1, i64 0, i64 0))
%12 = call i32 @printf(i8* getelementptr inbounds ([18 x i8], [18 x i8]* @.str.2, i64 0, i64 0))
%13 = call i32 (...) @CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_bad()
%14 = call i32 @printf(i8* getelementptr inbounds ([16 x i8], [16 x i8]* @.str.3, i64 0, i64 0))
ret i32 0
}

LLVM IR (-O2):
@str = [18 x i8] c"Calling good()...\00"
@str.4 = [16 x i8] c"Finished good()\00"
@str.5 = [17 x i8] c"Calling bad()...\00"
@str.6 = [15 x i8] c"Finished bad()\00"
define i32 @main(i32 %0, i8** nocapture readnone %1) {
%3 = tail call i64 @time(i32* null)
%4 = trunc i64 %3 to i32
%5 = tail call i32 @srand(i32 %4)
%6 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([18 x i8], [18 x i8]* @str, i64 0, i64 0))
%7 = tail call i32 (...) @CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_good()
%8 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([16 x i8], [16 x i8]* @str.4, i64 0, i64 0))
%9 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([17 x i8], [17 x i8]* @str.5, i64 0, i64 0))
%10 = tail call i32 (...) @CWE121_Stack_Based_Buffer_Overflow__CWE131_memcpy_01_bad()
%11 = tail call i32 @puts(i8* dereferenceable(1) getelementptr inbounds ([15 x i8], [15 x i8]* @str.6, i64 0, i64 0))
ret i32 0
}