diff --git a/GPL/DemanglerGnu/src/demangler_gnu/c/cp-demangle.c b/GPL/DemanglerGnu/src/demangler_gnu/c/cp-demangle.c
index eb4ab08106..479ea669c8 100644
--- a/GPL/DemanglerGnu/src/demangler_gnu/c/cp-demangle.c
+++ b/GPL/DemanglerGnu/src/demangler_gnu/c/cp-demangle.c
@@ -1,6 +1,5 @@
 /* ###
  * IP: GPL 3 Linking Permitted
- * REVIEWED: YES
  */
 /* Demangler for g++ V3 ABI.
    Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
@@ -36,6 +35,8 @@
    					CHANGE NOTICE:
 This file was changed on July 1st, 2014.			
 
+   					CHANGE NOTICE:
+This file was changed on July 4th, 2019.
 */
 
 /* This code implements a demangler for the g++ V3 ABI.  The ABI is
@@ -2170,9 +2171,10 @@ cplus_demangle_builtin_types[D_BUILTIN_TYPE_COUNT] =
   /* 27 */ { NL ("decimal64"),	NL ("decimal64"),	D_PRINT_DEFAULT },
   /* 28 */ { NL ("decimal128"),	NL ("decimal128"),	D_PRINT_DEFAULT },
   /* 29 */ { NL ("half"),	NL ("half"),		D_PRINT_FLOAT },
-  /* 30 */ { NL ("char16_t"),	NL ("char16_t"),	D_PRINT_DEFAULT },
-  /* 31 */ { NL ("char32_t"),	NL ("char32_t"),	D_PRINT_DEFAULT },
-  /* 32 */ { NL ("decltype(nullptr)"),	NL ("decltype(nullptr)"),
+  /* 30 */ { NL ("char8_t"),	NL ("char8_t"),	D_PRINT_DEFAULT },
+  /* 31 */ { NL ("char16_t"),	NL ("char16_t"),	D_PRINT_DEFAULT },
+  /* 32 */ { NL ("char32_t"),	NL ("char32_t"),	D_PRINT_DEFAULT },
+  /* 33 */ { NL ("decltype(nullptr)"),	NL ("decltype(nullptr)"),
 	     D_PRINT_DEFAULT },
 };
 
@@ -2405,14 +2407,19 @@ cplus_demangle_type (struct d_info *di)
 	  ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[29]);
 	  di->expansion += ret->u.s_builtin.type->len;
 	  break;
+  case 'u':
+    /* char8_t */
+    ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
+    di->expansion += ret->u.s_builtin.type->len;
+    break;
 	case 's':
 	  /* char16_t */
-	  ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[30]);
+	  ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
 	  di->expansion += ret->u.s_builtin.type->len;
 	  break;
 	case 'i':
 	  /* char32_t */
-	  ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[31]);
+	  ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
 	  di->expansion += ret->u.s_builtin.type->len;
 	  break;
 
@@ -2438,7 +2445,7 @@ cplus_demangle_type (struct d_info *di)
 
         case 'n':
           /* decltype(nullptr) */
-	  ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[32]);
+	  ret = d_make_builtin_type (di, &cplus_demangle_builtin_types[33]);
 	  di->expansion += ret->u.s_builtin.type->len;
 	  break;
 
diff --git a/GPL/DemanglerGnu/src/demangler_gnu/headers/cp-demangle.h b/GPL/DemanglerGnu/src/demangler_gnu/headers/cp-demangle.h
index 9ef329cbb3..0062ee2aa7 100644
--- a/GPL/DemanglerGnu/src/demangler_gnu/headers/cp-demangle.h
+++ b/GPL/DemanglerGnu/src/demangler_gnu/headers/cp-demangle.h
@@ -1,6 +1,5 @@
 /* ###
  * IP: GPL 3 Linking Permitted
- * REVIEWED: YES
  */
 /* Internal demangler interface for g++ V3 ABI.
    Copyright (C) 2003, 2004, 2005, 2006, 2007, 2010
@@ -152,7 +151,7 @@ struct d_info
 extern const struct demangle_operator_info cplus_demangle_operators[];
 #endif
 
-#define D_BUILTIN_TYPE_COUNT (33)
+#define D_BUILTIN_TYPE_COUNT (34)
 
 CP_STATIC_IF_GLIBCPP_V3
 const struct demangle_builtin_type_info