#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*/ strncmp(char const *, char *, int);
scalar_t__ strstr(char const *, char *);
int check_udi(const char *udi) {
  if (!udi || !strncmp(udi, "../", sizeof "../" - 1) || strstr(udi, "/../") ||
      strstr(udi, "//"))
    return 0;
  return 1;
}


x86 assembly (clang, -O0):
<check_udi>:
push   %rbp
mov    %rsp,%rbp
sub    $0x10,%rsp
mov    %rdi,-0x10(%rbp)
cmpq   $0x0,-0x10(%rbp)
je     1189 <check_udi+0x69>
mov    -0x10(%rbp),%rdi
lea    0xebf(%rip),%rsi
mov    $0x3,%edx
call   1030 <strncmp@plt>
cmp    $0x0,%eax
je     1189 <check_udi+0x69>
mov    -0x10(%rbp),%rdi
lea    0xea0(%rip),%rsi
call   1040 <strstr@plt>
cmp    $0x0,%rax
jne    1189 <check_udi+0x69>
mov    -0x10(%rbp),%rdi
lea    0xe8b(%rip),%rsi
call   1040 <strstr@plt>
cmp    $0x0,%rax
je     1195 <check_udi+0x75>
movl   $0x0,-0x4(%rbp)
jmp    119c <check_udi+0x7c>
movl   $0x1,-0x4(%rbp)
mov    -0x4(%rbp),%eax
add    $0x10,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<check_udi>:
push   %rbp
push   %rbx
push   %rax
xor    %ebp,%ebp
test   %rdi,%rdi
je     116e <check_udi+0x4e>
mov    %rdi,%rbx
lea    0xecd(%rip),%rsi
mov    $0x3,%edx
call   1030 <strncmp@plt>
test   %eax,%eax
je     116e <check_udi+0x4e>
lea    0xeb7(%rip),%rsi
mov    %rbx,%rdi
call   1040 <strstr@plt>
test   %rax,%rax
jne    116e <check_udi+0x4e>
lea    0xea8(%rip),%rsi
mov    %rbx,%rdi
call   1040 <strstr@plt>
xor    %ebp,%ebp
test   %rax,%rax
sete   %bpl
mov    %ebp,%eax
add    $0x8,%rsp
pop    %rbx
pop    %rbp
ret

LLVM IR (-O0):
@.str = [4 x i8] c"../\00"
@.str.1 = [5 x i8] c"/../\00"
@.str.2 = [3 x i8] c"//\00"
define i32 @check_udi(i8* %0) {
%2 = alloca i32
%3 = alloca i8*
store i8* %0, i8** %3
%4 = load i8*, i8** %3
%5 = icmp ne i8* %4, null
br i1 %5, label %6, label %18
6: ; preds = %1
%7 = load i8*, i8** %3
%8 = call i32 @strncmp(i8* %7, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 3)
%9 = icmp ne i32 %8, 0
br i1 %9, label %10, label %18
10: ; preds = %6
%11 = load i8*, i8** %3
%12 = call i64 @strstr(i8* %11, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%13 = icmp ne i64 %12, 0
br i1 %13, label %18, label %14
14: ; preds = %10
%15 = load i8*, i8** %3
%16 = call i64 @strstr(i8* %15, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
%17 = icmp ne i64 %16, 0
br i1 %17, label %18, label %19
18: ; preds = %14, %10, %6, %1
store i32 0, i32* %2
br label %20
19: ; preds = %14
store i32 1, i32* %2
br label %20
20: ; preds = %19, %18
%21 = load i32, i32* %2
ret i32 %21
}

LLVM IR (-O2):
@.str = [4 x i8] c"../\00"
@.str.1 = [5 x i8] c"/../\00"
@.str.2 = [3 x i8] c"//\00"
define i32 @check_udi(i8* %0) {
%2 = icmp eq i8* %0, null
br i1 %2, label %13, label %3
3: ; preds = %1
%4 = tail call i32 @strncmp(i8* %0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i32 3)
%5 = icmp eq i32 %4, 0
br i1 %5, label %13, label %6
6: ; preds = %3
%7 = tail call i64 @strstr(i8* %0, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str.1, i64 0, i64 0))
%8 = icmp eq i64 %7, 0
br i1 %8, label %9, label %13
9: ; preds = %6
%10 = tail call i64 @strstr(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
%11 = icmp eq i64 %10, 0
%12 = zext i1 %11 to i32
br label %13
13: ; preds = %9, %1, %3, %6
%14 = phi i32 [ 0, %6 ], [ 0, %3 ], [ 0, %1 ], [ %12, %9 ]
ret i32 %14
}