diff --git a/lib/stdio.in.h b/lib/stdio.in.h
index fa6b595..55f9653 100644
--- a/lib/stdio.in.h
+++ b/lib/stdio.in.h
@@ -719,15 +719,16 @@ _GL_WARN_ON_USE (getline, "getline is unportable - "
 # endif
 #endif
 
+#if !defined __cplusplus
 /* It is very rare that the developer ever has full control of stdin,
    so any use of gets warrants an unconditional warning; besides, C11
    removed it.  */
-#undef gets
-#if HAVE_RAW_DECL_GETS
+# undef gets
+# if HAVE_RAW_DECL_GETS
 _GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
+# endif
 #endif
 
-
 #if @GNULIB_OBSTACK_PRINTF@ || @GNULIB_OBSTACK_PRINTF_POSIX@
 struct obstack;
 /* Grow an obstack with formatted output.  Return the number of