diff -rNU3 dist.orig/gcc/cp/cfns.gperf dist/gcc/cp/cfns.gperf
--- dist.orig/gcc/cp/cfns.gperf	2018-08-24 00:40:38.917847976 +0200
+++ dist/gcc/cp/cfns.gperf	2018-08-24 00:43:45.613142399 +0200
@@ -1,3 +1,5 @@
+%language=C++
+%define class-name libc_name
 %{
 /* Copyright (C) 2000-2013 Free Software Foundation, Inc.
 
@@ -16,14 +18,6 @@
 You should have received a copy of the GNU General Public License
 along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
-#ifdef __GNUC__
-__inline
-#endif
-static unsigned int hash (const char *, unsigned int);
-#ifdef __GNUC__
-__inline
-#endif
-const char * libc_name_p (const char *, unsigned int);
 %}
 %%
 # The standard C library functions, for feeding to gperf; the result is used
diff -rNU3 dist.orig/gcc/cp/cfns.h dist/gcc/cp/cfns.h
--- dist.orig/gcc/cp/cfns.h	2018-08-24 00:40:38.913848077 +0200
+++ dist/gcc/cp/cfns.h	2018-08-24 00:49:31.228441865 +0200
@@ -1,5 +1,5 @@
-/* ANSI-C code produced by gperf version 3.0.3 */
-/* Command-line: gperf -o -C -E -k '1-6,$' -j1 -D -N libc_name_p -L ANSI-C cfns.gperf  */
+/* C++ code produced by gperf version 3.0.3 */
+/* Command-line: gperf -o -C -E -k '1-6,$' -j1 -D -N libc_name_p -L C++ cfns.gperf  */
 
 #if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
       && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
@@ -28,7 +28,7 @@
 #error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
 #endif
 
-#line 1 "cfns.gperf"
+#line 3 "cfns.gperf"
 
 /* Copyright (C) 2000-2013 Free Software Foundation, Inc.
 
@@ -47,25 +47,18 @@
 You should have received a copy of the GNU General Public License
 along with GCC; see the file COPYING3.  If not see
 <http://www.gnu.org/licenses/>.  */
-#ifdef __GNUC__
-__inline
-#endif
-static unsigned int hash (const char *, unsigned int);
-#ifdef __GNUC__
-__inline
-#endif
-const char * libc_name_p (const char *, unsigned int);
 /* maximum key range = 391, duplicates = 0 */
 
-#ifdef __GNUC__
-__inline
-#else
-#ifdef __cplusplus
-inline
-#endif
-#endif
-static unsigned int
-hash (register const char *str, register unsigned int len)
+class libc_name
+{
+private:
+  static inline unsigned int hash (const char *str, unsigned int len);
+public:
+  static const char *libc_name_p (const char *str, unsigned int len);
+};
+
+inline unsigned int
+libc_name::hash (register const char *str, register unsigned int len)
 {
   static const unsigned short asso_values[] =
     {
@@ -122,14 +115,8 @@
   return hval + asso_values[(unsigned char)str[len - 1]];
 }
 
-#ifdef __GNUC__
-__inline
-#ifdef __GNUC_STDC_INLINE__
-__attribute__ ((__gnu_inline__))
-#endif
-#endif
 const char *
-libc_name_p (register const char *str, register unsigned int len)
+libc_name::libc_name_p (register const char *str, register unsigned int len)
 {
   enum
     {
diff -rNU3 dist.orig/gcc/cp/except.c dist/gcc/cp/except.c
--- dist.orig/gcc/cp/except.c	2018-08-24 00:40:38.917847976 +0200
+++ dist/gcc/cp/except.c	2018-08-24 00:49:19.820728889 +0200
@@ -1025,7 +1025,8 @@
      unless the system headers are playing rename tricks, and if
      they are, we don't want to be confused by them.  */
   id = DECL_NAME (fn);
-  return !!libc_name_p (IDENTIFIER_POINTER (id), IDENTIFIER_LENGTH (id));
+  return !!libc_name::libc_name_p (IDENTIFIER_POINTER (id),
+		  		  IDENTIFIER_LENGTH (id));
 }
 
 /* Returns nonzero if an exception of type FROM will be caught by a
diff -rNU3 dist.orig/gcc/cp/Make-lang.in dist/gcc/cp/Make-lang.in
--- dist.orig/gcc/cp/Make-lang.in	2018-08-24 00:40:38.913848077 +0200
+++ dist/gcc/cp/Make-lang.in	2018-08-24 00:41:40.240301781 +0200
@@ -117,7 +117,7 @@
 # deleting the $(srcdir)/cp/cfns.h file.
 $(srcdir)/cp/cfns.h:
 endif
-	gperf -o -C -E -k '1-6,$$' -j1 -D -N 'libc_name_p' -L ANSI-C \
+	gperf -o -C -E -k '1-6,$$' -j1 -D -N 'libc_name_p' -L C++ \
 		$(srcdir)/cp/cfns.gperf --output-file $(srcdir)/cp/cfns.h
 
 #