#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 */
struct utsname {
  char *sysname;
  char *nodename;
  char *release;
  char *version;
  char *machine;
};

/* Variables and functions */
int /*<<< orphan*/ printf(char *, char *);
int /*<<< orphan*/ uname(struct utsname *);
int main() {
  struct utsname name;
  uname(&name);
  printf("%s\n", name.sysname);
  printf("%s\n", name.nodename);
  printf("%s\n", name.release);
  printf("%s\n", name.version);
  printf("%s\n", name.machine);
}


x86 assembly (clang, -O0):
<main>:
push   %rbp
mov    %rsp,%rbp
sub    $0x30,%rsp
lea    -0x28(%rbp),%rdi
call   1040 <uname@plt>
mov    -0x28(%rbp),%rsi
lea    0xec4(%rip),%rdi
call   1030 <printf@plt>
mov    -0x20(%rbp),%rsi
lea    0xeb4(%rip),%rdi
call   1030 <printf@plt>
mov    -0x18(%rbp),%rsi
lea    0xea4(%rip),%rdi
call   1030 <printf@plt>
mov    -0x10(%rbp),%rsi
lea    0xe94(%rip),%rdi
call   1030 <printf@plt>
mov    -0x8(%rbp),%rsi
lea    0xe84(%rip),%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbp
ret

x86 assembly (clang, -O2):
<main>:
push   %rbx
sub    $0x30,%rsp
lea    0x8(%rsp),%rdi
call   1040 <uname@plt>
mov    0x8(%rsp),%rsi
lea    0xec5(%rip),%rbx
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0x10(%rsp),%rsi
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0x18(%rsp),%rsi
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0x20(%rsp),%rsi
mov    %rbx,%rdi
call   1030 <printf@plt>
mov    0x28(%rsp),%rsi
mov    %rbx,%rdi
call   1030 <printf@plt>
xor    %eax,%eax
add    $0x30,%rsp
pop    %rbx
ret

LLVM IR (-O0):
%struct.utsname = type { i8*, i8*, i8*, i8*, i8* }
@.str = [4 x i8] c"%s\0A\00"
define i32 @main() {
%1 = alloca %struct.utsname
%2 = call i32 @uname(%struct.utsname* %1)
%3 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i32 0, i32 0
%4 = load i8*, i8** %3
%5 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %4)
%6 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i32 0, i32 1
%7 = load i8*, i8** %6
%8 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %7)
%9 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i32 0, i32 2
%10 = load i8*, i8** %9
%11 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %10)
%12 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i32 0, i32 3
%13 = load i8*, i8** %12
%14 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %13)
%15 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i32 0, i32 4
%16 = load i8*, i8** %15
%17 = call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %16)
ret i32 0
}

LLVM IR (-O2):
%struct.utsname = type { i8*, i8*, i8*, i8*, i8* }
@.str = [4 x i8] c"%s\0A\00"
define i32 @main() {
%1 = alloca %struct.utsname
%2 = bitcast %struct.utsname* %1 to i8*
%3 = call i32 @uname(%struct.utsname* %1)
%4 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i64 0, i32 0
%5 = load i8*, i8** %4
%6 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %5)
%7 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i64 0, i32 1
%8 = load i8*, i8** %7
%9 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %8)
%10 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i64 0, i32 2
%11 = load i8*, i8** %10
%12 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %11)
%13 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i64 0, i32 3
%14 = load i8*, i8** %13
%15 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %14)
%16 = getelementptr inbounds %struct.utsname, %struct.utsname* %1, i64 0, i32 4
%17 = load i8*, i8** %16
%18 = tail call i32 @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i64 0, i64 0), i8* %17)
ret i32 0
}