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// RUN: %check_clang_tidy %s readability-redundant-preprocessor %t -- -- -I %S
// Positive testing.
#ifndef FOO
// CHECK-NOTES: [[@LINE+1]]:2: warning: nested redundant #ifndef; consider removing it [readability-redundant-preprocessor]
#ifndef FOO
// CHECK-NOTES: [[@LINE-3]]:2: note: previous #ifndef was here
void f();
#endif
#endif
// Positive testing of inverted condition.
#ifndef FOO
// CHECK-NOTES: [[@LINE+1]]:2: warning: nested redundant #ifdef; consider removing it [readability-redundant-preprocessor]
#ifdef FOO
// CHECK-NOTES: [[@LINE-3]]:2: note: previous #ifndef was here
void f2();
#endif
#endif
// Negative testing.
#include "redundant-preprocessor.h"
#ifndef BAR
void g();
#endif
#ifndef FOO
#ifndef BAR
void h();
#endif
#endif
#ifndef FOO
#ifdef BAR
void i();
#endif
#endif
// Positive #if testing.
#define FOO 4
#if FOO == 4
// CHECK-NOTES: [[@LINE+1]]:2: warning: nested redundant #if; consider removing it [readability-redundant-preprocessor]
#if FOO == 4
// CHECK-NOTES: [[@LINE-3]]:2: note: previous #if was here
void j();
#endif
#endif
#if FOO == 3 + 1
// CHECK-NOTES: [[@LINE+1]]:2: warning: nested redundant #if; consider removing it [readability-redundant-preprocessor]
#if FOO == 3 + 1
// CHECK-NOTES: [[@LINE-3]]:2: note: previous #if was here
void j();
#endif
#endif
#if FOO == \
4
// CHECK-NOTES: [[@LINE+1]]:2: warning: nested redundant #if; consider removing it [readability-redundant-preprocessor]
#if FOO == \
4
// CHECK-NOTES: [[@LINE-5]]:2: note: previous #if was here
void j();
#endif
#endif
// Negative #if testing.
#define BAR 4
#if FOO == 4
#if BAR == 4
void k();
#endif
#endif
#if FOO == \
4
#if BAR == \
5
void k();
#endif
#endif
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