#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 */
typedef int /*<<< orphan*/ FILE;

/* Variables and functions */
int /*<<< orphan*/ EXIT_FAILURE;
int /*<<< orphan*/ SEEK_END;
int /*<<< orphan*/ err(int /*<<< orphan*/, char *, char *);
int /*<<< orphan*/ fclose(int /*<<< orphan*/ *);
int /*<<< orphan*/ *fopen(char *, char *);
int /*<<< orphan*/ fseek(int /*<<< orphan*/ *, long, int /*<<< orphan*/);
long ftell(int /*<<< orphan*/ *);
long get_size(char *file_name) {
  FILE *fp;
  long size;
  if ((fp = fopen(file_name, "rb")) == NULL) {
    err(EXIT_FAILURE, "can't open file '%s'", file_name);
  }
  fseek(fp, 0L, SEEK_END);
  size = ftell(fp);
  fclose(fp);
  return size;
}


x86 assembly (clang, -O0):
<get_size>:
push   %rbp
mov    %rsp,%rbp
sub    $0x20,%rsp
mov    %rdi,-0x8(%rbp)
mov    -0x8(%rbp),%rdi
lea    0xe99(%rip),%rsi
call   1070 <fopen@plt>
mov    %rax,-0x10(%rbp)
cmp    $0x0,%rax
jne    1193 <get_size+0x43>
mov    0x2e57(%rip),%rax
mov    (%rax),%edi
mov    -0x8(%rbp),%rdx
lea    0xe75(%rip),%rsi
call   1050 <err@plt>
mov    -0x10(%rbp),%rdi
mov    0x2e4a(%rip),%rax
mov    (%rax),%edx
xor    %eax,%eax
mov    %eax,%esi
call   1060 <fseek@plt>
mov    -0x10(%rbp),%rdi
call   1040 <ftell@plt>
mov    %rax,-0x18(%rbp)
mov    -0x10(%rbp),%rdi
call   1030 <fclose@plt>
mov    -0x18(%rbp),%rax
add    $0x20,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<get_size>:
push   %r14
push   %rbx
push   %rax
mov    %rdi,%r14
lea    0xea2(%rip),%rsi
call   1070 <fopen@plt>
mov    %rax,%rbx
test   %rax,%rax
jne    1183 <get_size+0x33>
mov    0x2e66(%rip),%rax
mov    (%rax),%edi
lea    0xe88(%rip),%rsi
mov    %r14,%rdx
call   1050 <err@plt>
mov    0x2e5e(%rip),%rax
mov    (%rax),%edx
mov    %rbx,%rdi
xor    %esi,%esi
call   1060 <fseek@plt>
mov    %rbx,%rdi
call   1040 <ftell@plt>
mov    %rax,%r14
mov    %rbx,%rdi
call   1030 <fclose@plt>
mov    %r14,%rax
add    $0x8,%rsp
pop    %rbx
pop    %r14
ret

LLVM IR (-O0):
@.str = [3 x i8] c"rb\00"
@EXIT_FAILURE = global i32 0
@.str.1 = [21 x i8] c"can't open file '%s'\00"
@SEEK_END = global i32 0
define i64 @get_size(i8* %0) {
%2 = alloca i8*
%3 = alloca i32*
%4 = alloca i64
store i8* %0, i8** %2
%5 = load i8*, i8** %2
%6 = call i32* @fopen(i8* %5, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
store i32* %6, i32** %3
%7 = icmp eq i32* %6, null
br i1 %7, label %8, label %12
8: ; preds = %1
%9 = load i32, i32* @EXIT_FAILURE
%10 = load i8*, i8** %2
%11 = call i32 @err(i32 %9, i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.1, i64 0, i64 0), i8* %10)
br label %12
12: ; preds = %8, %1
%13 = load i32*, i32** %3
%14 = load i32, i32* @SEEK_END
%15 = call i32 @fseek(i32* %13, i64 0, i32 %14)
%16 = load i32*, i32** %3
%17 = call i64 @ftell(i32* %16)
store i64 %17, i64* %4
%18 = load i32*, i32** %3
%19 = call i32 @fclose(i32* %18)
%20 = load i64, i64* %4
ret i64 %20
}

LLVM IR (-O2):
@.str = [3 x i8] c"rb\00"
@EXIT_FAILURE = global i32 0
@.str.1 = [21 x i8] c"can't open file '%s'\00"
@SEEK_END = global i32 0
define i64 @get_size(i8* %0) {
%2 = tail call i32* @fopen(i8* %0, i8* getelementptr inbounds ([3 x i8], [3 x i8]* @.str, i64 0, i64 0))
%3 = icmp eq i32* %2, null
br i1 %3, label %4, label %7
4: ; preds = %1
%5 = load i32, i32* @EXIT_FAILURE
%6 = tail call i32 @err(i32 %5, i8* getelementptr inbounds ([21 x i8], [21 x i8]* @.str.1, i64 0, i64 0), i8* %0)
br label %7
7: ; preds = %4, %1
%8 = load i32, i32* @SEEK_END
%9 = tail call i32 @fseek(i32* %2, i64 0, i32 %8)
%10 = tail call i64 @ftell(i32* %2)
%11 = tail call i32 @fclose(i32* %2)
ret i64 %10
}