#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*/ send(int, char *, int /*<<< orphan*/, int /*<<< orphan*/);
int /*<<< orphan*/ sprintf(char *, char *);
int /*<<< orphan*/ strlen(char *);
void cannot_execute(int fd) {
  char buf[1024];
  sprintf(buf, "HTTP/1.0 500 Internal Server Error\r\n");
  send(fd, buf, strlen(buf), 0);
  sprintf(buf, "Content-type: text/html\r\n");
  send(fd, buf, strlen(buf), 0);
  sprintf(buf, "\r\n");
  send(fd, buf, strlen(buf), 0);
  sprintf(buf, "<P>Error prohibited CGI execution.\r\n");
  send(fd, buf, strlen(buf), 0);
}


x86 assembly (clang, -O0):
<cannot_execute>:
push   %rbp
mov    %rsp,%rbp
sub    $0x450,%rsp
mov    %edi,-0x4(%rbp)
lea    -0x410(%rbp),%rdi
lea    0xeb4(%rip),%rsi
call   1050 <sprintf@plt>
mov    -0x4(%rbp),%eax
mov    %eax,-0x44c(%rbp)
lea    -0x410(%rbp),%rax
mov    %rax,-0x448(%rbp)
lea    -0x410(%rbp),%rdi
call   1030 <strlen@plt>
mov    -0x44c(%rbp),%edi
mov    -0x448(%rbp),%rsi
mov    %eax,%edx
xor    %ecx,%ecx
call   1040 <send@plt>
lea    -0x410(%rbp),%rdi
lea    0xe8d(%rip),%rsi
call   1050 <sprintf@plt>
mov    -0x4(%rbp),%eax
mov    %eax,-0x43c(%rbp)
lea    -0x410(%rbp),%rax
mov    %rax,-0x438(%rbp)
lea    -0x410(%rbp),%rdi
call   1030 <strlen@plt>
mov    -0x43c(%rbp),%edi
mov    -0x438(%rbp),%rsi
mov    %eax,%edx
xor    %ecx,%ecx
call   1040 <send@plt>
lea    -0x410(%rbp),%rdi
lea    0xe7d(%rip),%rsi
call   1050 <sprintf@plt>
mov    -0x4(%rbp),%eax
mov    %eax,-0x42c(%rbp)
lea    -0x410(%rbp),%rax
mov    %rax,-0x428(%rbp)
lea    -0x410(%rbp),%rdi
call   1030 <strlen@plt>
mov    -0x42c(%rbp),%edi
mov    -0x428(%rbp),%rsi
mov    %eax,%edx
xor    %ecx,%ecx
call   1040 <send@plt>
lea    -0x410(%rbp),%rdi
lea    0xe0f(%rip),%rsi
call   1050 <sprintf@plt>
mov    -0x4(%rbp),%eax
mov    %eax,-0x41c(%rbp)
lea    -0x410(%rbp),%rax
mov    %rax,-0x418(%rbp)
lea    -0x410(%rbp),%rdi
call   1030 <strlen@plt>
mov    -0x41c(%rbp),%edi
mov    -0x418(%rbp),%rsi
mov    %eax,%edx
xor    %ecx,%ecx
call   1040 <send@plt>
add    $0x450,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<cannot_execute>:
push   %r14
push   %rbx
sub    $0x408,%rsp
mov    %edi,%ebx
movups 0xedd(%rip),%xmm0
movaps %xmm0,0x10(%rsp)
movups 0xec1(%rip),%xmm0
movaps %xmm0,(%rsp)
movabs $0xa0d726f727245,%rax
mov    %rax,0x1d(%rsp)
mov    %rsp,%r14
mov    %r14,%rdi
call   1030 <strlen@plt>
mov    %ebx,%edi
mov    %r14,%rsi
mov    %eax,%edx
xor    %ecx,%ecx
call   1040 <send@plt>
movups 0xeb3(%rip),%xmm0
movaps %xmm0,(%rsp)
movups 0xeb2(%rip),%xmm0
movups %xmm0,0xa(%rsp)
mov    %r14,%rdi
call   1030 <strlen@plt>
mov    %ebx,%edi
mov    %r14,%rsi
mov    %eax,%edx
xor    %ecx,%ecx
call   1040 <send@plt>
movw   $0xa0d,(%rsp)
movb   $0x0,0x2(%rsp)
mov    %r14,%rdi
call   1030 <strlen@plt>
mov    %ebx,%edi
mov    %r14,%rsi
mov    %eax,%edx
xor    %ecx,%ecx
call   1040 <send@plt>
movabs $0xa0d2e6e6f6974,%rax
mov    %rax,0x1d(%rsp)
movups 0xe70(%rip),%xmm0
movaps %xmm0,(%rsp)
movups 0xe75(%rip),%xmm0
movaps %xmm0,0x10(%rsp)
mov    %r14,%rdi
call   1030 <strlen@plt>
mov    %ebx,%edi
mov    %r14,%rsi
mov    %eax,%edx
xor    %ecx,%ecx
call   1040 <send@plt>
add    $0x408,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [37 x i8] c"HTTP/1.0 500 Internal Server Error\0D\0A\00"
@.str.1 = [26 x i8] c"Content-type: text/html\0D\0A\00"
@.str.2 = [3 x i8] c"\0D\0A\00"
@.str.3 = [37 x i8] c"<P>Error prohibited CGI execution.\0D\0A\00"
define void @cannot_execute(i32 %0) {
%2 = alloca i32
%3 = alloca [1024 x i8]
store i32 %0, i32* %2
%4 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%5 = call i32 @sprintf(i8* %4, i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str, i64 0, i64 0))
%6 = load i32, i32* %2
%7 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%8 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%9 = call i32 @strlen(i8* %8)
%10 = call i32 @send(i32 %6, i8* %7, i32 %9, i32 0)
%11 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%12 = call i32 @sprintf(i8* %11, i8* getelementptr inbounds ([26 x i8], [26 x i8]* @.str.1, i64 0, i64 0))
%13 = load i32, i32* %2
%14 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%15 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%16 = call i32 @strlen(i8* %15)
%17 = call i32 @send(i32 %13, i8* %14, i32 %16, i32 0)
%18 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%19 = call i32 @sprintf(i8* %18, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str.2, i64 0, i64 0))
%20 = load i32, i32* %2
%21 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%22 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%23 = call i32 @strlen(i8* %22)
%24 = call i32 @send(i32 %20, i8* %21, i32 %23, i32 0)
%25 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%26 = call i32 @sprintf(i8* %25, i8* getelementptr inbounds ([37 x i8], [37 x i8]* @.str.3, i64 0, i64 0))
%27 = load i32, i32* %2
%28 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%29 = getelementptr inbounds [1024 x i8], [1024 x i8]* %3, i64 0, i64 0
%30 = call i32 @strlen(i8* %29)
%31 = call i32 @send(i32 %27, i8* %28, i32 %30, i32 0)
ret void
}

LLVM IR (-O2):
@.str = [37 x i8] c"HTTP/1.0 500 Internal Server Error\0D\0A\00"
@.str.1 = [26 x i8] c"Content-type: text/html\0D\0A\00"
@.str.2 = [3 x i8] c"\0D\0A\00"
@.str.3 = [37 x i8] c"<P>Error prohibited CGI execution.\0D\0A\00"
define void @cannot_execute(i32 %0) {
%2 = alloca [1024 x i8]
%3 = getelementptr inbounds [1024 x i8], [1024 x i8]* %2, i64 0, i64 0
%4 = call i32 @strlen(i8* %3)
%5 = call i32 @send(i32 %0, i8* %3, i32 %4, i32 0)
%6 = call i32 @strlen(i8* %3)
%7 = call i32 @send(i32 %0, i8* %3, i32 %6, i32 0)
%8 = call i32 @strlen(i8* %3)
%9 = call i32 @send(i32 %0, i8* %3, i32 %8, i32 0)
%10 = call i32 @strlen(i8* %3)
%11 = call i32 @send(i32 %0, i8* %3, i32 %10, i32 0)
ret void
}