diff --git a/contrib/llvm-project/libcxx/include/__system_error/errc.h b/contrib/llvm-project/libcxx/include/__system_error/errc.h
index f0c27b1c60a1..f939c99f7ed6 100644
--- a/contrib/llvm-project/libcxx/include/__system_error/errc.h
+++ b/contrib/llvm-project/libcxx/include/__system_error/errc.h
@@ -143,7 +143,9 @@ _LIBCPP_DECLARE_STRONG_ENUM(errc)
     identifier_removed                  = EIDRM,
     illegal_byte_sequence               = EILSEQ,
     inappropriate_io_control_operation  = ENOTTY,
+#ifdef EINTEGRITY
     integrity_check_failed              = EINTEGRITY,
+#endif
     interrupted                         = EINTR,
     invalid_argument                    = EINVAL,
     invalid_seek                        = ESPIPE,
diff --git a/contrib/llvm-project/libcxx/include/errno.h b/contrib/llvm-project/libcxx/include/errno.h
index ea96c3a0f004..7b02d2b47953 100644
--- a/contrib/llvm-project/libcxx/include/errno.h
+++ b/contrib/llvm-project/libcxx/include/errno.h
@@ -34,79 +34,49 @@
 
 #ifdef __cplusplus
 
-#if !defined(EOWNERDEAD) || !defined(ENOTRECOVERABLE) || !defined(EINTEGRITY)
+#if !defined(EOWNERDEAD) || !defined(ENOTRECOVERABLE)
 
-#if defined(ELAST)
+#ifdef ELAST
 
 static const int __elast1 = ELAST+1;
 static const int __elast2 = ELAST+2;
-static const int __elast3 = ELAST+3;
 
 #else
 
 static const int __elast1 = 104;
 static const int __elast2 = 105;
-static const int __elast3 = 106;
 
 #endif
 
-#if !defined(EOWNERDEAD) && !defined(ENOTRECOVERABLE) && !defined(EINTEGRITY)
-#define ENOTRECOVERABLE __elast1
-#define EOWNERDEAD __elast2
-#define EINTEGRITY __elast3
-#if defined(ELAST)
-#undef ELAST
-#define ELAST EINTEGRITY
-#endif
+#ifdef ENOTRECOVERABLE
 
-#elif !defined(EOWNERDEAD) && !defined(ENOTRECOVERABLE) && defined(EINTEGRITY)
-#define ENOTRECOVERABLE __elast1
-#define EOWNERDEAD __elast2
-#if defined(ELAST)
+#define EOWNERDEAD __elast1
+
+#ifdef ELAST
 #undef ELAST
 #define ELAST EOWNERDEAD
 #endif
 
-#elif !defined(EOWNERDEAD) && defined(ENOTRECOVERABLE) && !defined(EINTEGRITY)
-#define EOWNERDEAD __elast1
-#define EINTEGRITY __elast2
-#if defined(ELAST)
-#undef ELAST
-#define ELAST EINTEGRITY
-#endif
+#elif defined(EOWNERDEAD)
 
-#elif !defined(EOWNERDEAD) && defined(ENOTRECOVERABLE) && defined(EINTEGRITY)
-#define EOWNERDEAD __elast1
-#if defined(ELAST)
-#undef ELAST
-#define ELAST EOWNERDEAD
-#endif
-
-#elif defined(EOWNERDEAD) && !defined(ENOTRECOVERABLE) && !defined(EINTEGRITY)
 #define ENOTRECOVERABLE __elast1
-#define EINTEGRITY __elast2
-#if defined(ELAST)
-#undef ELAST
-#define ELAST EINTEGRITY
-#endif
-
-#elif defined(EOWNERDEAD) && !defined(ENOTRECOVERABLE) && defined(EINTEGRITY)
-#define ENOTRECOVERABLE __elast1
-#if defined(ELAST)
+#ifdef ELAST
 #undef ELAST
 #define ELAST ENOTRECOVERABLE
 #endif
 
-#elif defined(EOWNERDEAD) && defined(ENOTRECOVERABLE) && !defined(EINTEGRITY)
-#define EINTEGRITY __elast1
-#if defined(ELAST)
+#else  // defined(EOWNERDEAD)
+
+#define EOWNERDEAD __elast1
+#define ENOTRECOVERABLE __elast2
+#ifdef ELAST
 #undef ELAST
-#define ELAST EINTEGRITY
+#define ELAST ENOTRECOVERABLE
 #endif
 
-#endif // !defined(OWNERDEAD) && !defined(NOTRECOVERABLE) && !defined(INTEGRITY)
+#endif // defined(EOWNERDEAD)
 
-#endif // !defined(OWNERDEAD) || !defined(NOTRECOVERABLE) || !defined(INTEGRITY)
+#endif // !defined(EOWNERDEAD) || !defined(ENOTRECOVERABLE)
 
 //  supply errno values likely to be missing, particularly on Windows
 
@@ -424,10 +394,6 @@ static const int __elast3 = 106;
 #define EMLINK 9979
 #endif
 
-#ifndef EINTEGRITY
-#define EINTEGRITY 9980
-#endif
-
 #endif // __cplusplus
 
 #endif // _LIBCPP_ERRNO_H