// RUN: %check_clang_tidy %s readability-duplicate-include %t -- \
// RUN:   -header-filter='' \
// RUN:   -- -isystem %S/Inputs/duplicate-include/system -I %S/Inputs/duplicate-include

int a;
#include <string.h>
int b;
#include <string.h>
int c;
// CHECK-MESSAGES: :[[@LINE-2]]:1: warning: duplicate include [readability-duplicate-include]
// CHECK-FIXES:      int a;
// CHECK-FIXES-NEXT: #include <string.h>
// CHECK-FIXES-NEXT: int b;
// CHECK-FIXES-NEXT: int c;

int d;
#include <iostream>
int e;
#include <iostream> // extra stuff that will also be removed
int f;
// CHECK-MESSAGES: :[[@LINE-2]]:1: warning: duplicate include
// CHECK-FIXES:      int d;
// CHECK-FIXES-NEXT: #include <iostream>
// CHECK-FIXES-NEXT: int e;
// CHECK-FIXES-NEXT: int f;

int g;
#include "duplicate-include.h"
int h;
#include "duplicate-include.h"
int i;
// CHECK-MESSAGES: :[[@LINE-2]]:1: warning: duplicate include
// CHECK-FIXES:      int g;
// CHECK-FIXES-NEXT: #include "duplicate-include.h"
// CHECK-FIXES-NEXT: int h;
// CHECK-FIXES-NEXT: int i;

#include <types.h>

int j;
#include <sys/types.h>
int k;
#include <sys/types.h>
int l;
// CHECK-MESSAGES: :[[@LINE-2]]:1: warning: duplicate include
// CHECK-FIXES:      int j;
// CHECK-FIXES-NEXT: #include <sys/types.h>
// CHECK-FIXES-NEXT: int k;
// CHECK-FIXES-NEXT: int l;

int m;
        #          include             <string.h>  // lots of space
int n;
// CHECK-MESSAGES: :[[@LINE-2]]:9: warning: duplicate include
// CHECK-FIXES:      int m;
// CHECK-FIXES-NEXT: int n;

// defining a macro in the main file resets the included file cache
#define ARBITRARY_MACRO
int o;
#include <sys/types.h>
int p;
// CHECK-FIXES:      int o;
// CHECK-FIXES-NEXT: #include <sys/types.h>
// CHECK-FIXES-NEXT: int p;

// undefining a macro resets the cache
#undef ARBITRARY_MACRO
int q;
#include <sys/types.h>
int r;
// CHECK-FIXES:      int q;
// CHECK-FIXES-NEXT: #include <sys/types.h>
// CHECK-FIXES-NEXT: int r;

namespace Issue_87303 {
#define RESET_INCLUDE_CACHE
// Expect no warnings

#define MACRO_FILENAME "duplicate-include.h"
#include MACRO_FILENAME
#include "duplicate-include.h"

#define MACRO_FILENAME_2 <duplicate-include2.h>
#include <duplicate-include2.h>
#include MACRO_FILENAME_2

#undef RESET_INCLUDE_CACHE
} // Issue_87303
