gdb: Fix build failure with GCC 7

[deliverable/binutils-gdb.git] / gdb / ada-lex.l

diff --git a/gdb/ada-lex.l b/gdb/ada-lex.l
index 97f9b2dfa8ff3440250e6dba9734e02ac70f1efa..fe97352d85100ac4406f533012dea982ac476399 100644 (file)
--- a/gdb/ada-lex.l
+++ b/gdb/ada-lex.l
@@ -1,5 +1,5 @@
 /* FLEX lexer for Ada expressions, for GDB.
-   Copyright (C) 1994-2015 Free Software Foundation, Inc.
+   Copyright (C) 1994-2017 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -41,6 +41,14 @@ POSEXP  (e"+"?{NUM10})
 
 %{
 
+#include "common/diagnostics.h"
+
+/* Some old versions of flex generate code that uses the "register" keyword,
+   which clang warns about.  This was observed for example with flex 2.5.35,
+   as shipped with macOS 10.12.  */
+DIAGNOSTIC_PUSH
+DIAGNOSTIC_IGNORE_DEPRECATED_REGISTER
+
 #define NUMERAL_WIDTH 256
 #define LONGEST_SIGN ((ULONGEST) 1 << (sizeof(LONGEST) * HOST_CHAR_BIT - 1))
 
@@ -648,3 +656,5 @@ dummy_function ada_flex_use[] =
 { 
   (dummy_function) yyunput
 };
+
+DIAGNOSTIC_POP