* examples/calc++/test: Use set -x only when VERBOSE.

[bison.git] / data / c.m4

diff --git a/data/c.m4 b/data/c.m4
index 03f20ff79616dffc9a35b31155f3cc736d9d5fc8..5285fcdcc6c08476d8606cf9d0ca54862685154d 100644 (file)
--- a/data/c.m4
+++ b/data/c.m4
@@ -232,7 +232,7 @@ m4_define([b4_token_enums_defines],
 # ----------------------------------------------------------
 # Declare the function NAME.
 m4_define([b4_c_function_def],
-[#if defined (__STDC__) || defined (__cplusplus)
+[#if defined (__STDC__) || defined (__C99__FUNC__) || defined (__cplusplus)
 b4_c_ansi_function_def($@)
 #else
 $2
@@ -385,9 +385,8 @@ m4_define_default([b4_yydestruct_generate],
     [[YYSTYPE *yyvaluep],    [yyvaluep]]b4_location_if([,
     [[YYLTYPE *yylocationp], [yylocationp]]]))[
 {
-  /* Pacify ``unused variable'' warnings.  */
-  (void) yyvaluep;
-]b4_location_if([  (void) yylocationp;
+  YYUSE (yyvaluep);
+]b4_location_if([  YYUSE (yylocationp);
 ])[
   if (!yymsg)
     yymsg = "Deleting";
@@ -420,9 +419,8 @@ m4_define_default([b4_yysymprint_generate],
     [[YYSTYPE *yyvaluep],    [yyvaluep]]b4_location_if([,
     [[YYLTYPE *yylocationp], [yylocationp]]]))
 {
-  /* Pacify ``unused variable'' warnings.  */
-  (void) yyvaluep;
-b4_location_if([  (void) yylocationp;
+  YYUSE (yyvaluep);
+b4_location_if([  YYUSE (yylocationp);
 ])dnl
 [
   if (yytype < YYNTOKENS)