build: fix a warning from clang

[bison.git] / data / bison.m4

diff --git a/data/bison.m4 b/data/bison.m4
index 904bcf2be897bee452d10c97178a98174d1b1fdc..ca27159c878f4b151840043620a8d42a027973be 100644 (file)
--- a/data/bison.m4
+++ b/data/bison.m4
@@ -814,8 +814,8 @@ m4_define([b4_percent_define_flag_if],
   [b4_fatal([[$0: undefined %%define variable '%s']], [$1])])])
 
 
-# b4_percent_define_default(VARIABLE, DEFAULT)
-# --------------------------------------------
+# b4_percent_define_default(VARIABLE, DEFAULT, [KIND = keyword])
+# --------------------------------------------------------------
 # Mimic muscle_percent_define_default in ../src/muscle-tab.h exactly.  That is,
 # if the %define variable VARIABLE is undefined, set its value to DEFAULT.
 # Don't record this as a Bison usage of VARIABLE as there's no reason to
@@ -827,6 +827,8 @@ m4_define([b4_percent_define_flag_if],
 m4_define([b4_percent_define_default],
 [b4_percent_define_ifdef_([$1], [],
            [m4_define([b4_percent_define(]$1[)], [$2])dnl
+            m4_define([b4_percent_define_kind(]$1[)],
+                      [m4_default([$3], [keyword])])dnl
             m4_define([b4_percent_define_loc(]$1[)],
                       [[[[<skeleton default value>:-1.-1]],
                         [[<skeleton default value>:-1.-1]]]])dnl
@@ -851,12 +853,12 @@ b4_percent_define_if_define_([$1], [$2], $[1], $[2])])
 # ---------------------------------------------------------------------
 m4_define([b4_percent_define_check_kind],
 [b4_percent_define_ifdef_([$1],
-  [m4_if(b4_percent_define_get_kind([[$1]]), [$2], [],
+  [m4_if(b4_percent_define_get_kind([$1]), [$2], [],
     [b4_error([m4_default([$3], [complain])],
               b4_percent_define_get_loc([$1]),
               [m4_case([$2],
                  [code], [[%%define variable '%s' requires '{...}' values]],
-                 [keyword], [[%%define variable '%s' requires '...' values]],
+                 [keyword], [[%%define variable '%s' requires keyword values]],
                  [string], [[%%define variable '%s' requires '"..."' values]])],
               [$1])])])dnl
 ])
@@ -884,7 +886,8 @@ m4_define([b4_percent_define_check_values],
 
 m4_define([_b4_percent_define_check_values],
 [b4_percent_define_ifdef_([$1],
-  [m4_pushdef([b4_good_value], [0])dnl
+  [b4_percent_define_check_kind(]$1[, [keyword], [deprecated])dnl
+   m4_pushdef([b4_good_value], [0])dnl
    m4_if($#, 1, [],
          [m4_foreach([b4_value], m4_dquote(m4_shift($@)),
                      [m4_if(m4_indir([b4_percent_define(]$1[)]), b4_value,
@@ -1023,7 +1026,14 @@ m4_define_default([b4_location_initial_line],   [1])
 ## Sanity checks.  ##
 ## --------------- ##
 
+# api.location.prefix={...} (Java and C++).
+b4_percent_define_check_kind([api.location.type], [code], [deprecated])
+
+# api.position.prefix={...} (Java).
+b4_percent_define_check_kind([api.position.type], [code], [deprecated])
+
 # api.prefix >< %name-prefix.
+b4_percent_define_check_kind([api.prefix], [code], [deprecated])
 b4_percent_define_ifdef([api.prefix],
 [m4_ifdef([b4_prefix],
 [b4_complain_at(b4_percent_define_get_loc([api.prefix]),