* doc/bison.texinfo (Debugging):

[bison.git] / tests / calc.at

diff --git a/tests/calc.at b/tests/calc.at
index db308dfdb699865fdda859874c2c480dd7c12a4b..90241b35b21d4e428d9107d93f37eb9448206f47 100644 (file)
--- a/tests/calc.at
+++ b/tests/calc.at
@@ -63,9 +63,16 @@ static void yyungetc (int c);
 extern void perror (const char *s);
 %}
 
+/* Also exercise %union. */
+%union
+{
+  int ival; /* A comment to exercise an old bug. */
+};
+
 /* Bison Declarations */
 %token CALC_EOF 0 "end of file"
-%token NUM "number"
+%token <ival> NUM "number"
+%type  <ival> exp
 
 %nonassoc '=' /* comparison           */
 %left '-' '+'
@@ -84,7 +91,7 @@ input:
 
 line:
   '\n'
-| exp '\n'
+| exp '\n' {}
 ;
 
 exp:
@@ -205,7 +212,7 @@ yylex (void)
   if (c == '.' || isdigit (c))
     {
       yyungetc (c);
-      yylval = read_signed_integer ();
+      yylval.ival = read_signed_integer ();
       return NUM;
     }
 
@@ -344,17 +351,6 @@ AT_DATA_CALC_Y([$1])
 AT_CHECK([bison calc.y -o calc.c m4_bpatsubst([$1], [--yyerror-verbose])],
          [0], [], [])
 
-# Some compilers issue warnings we don't want to hear about.
-# Maybe some day we will have proper Autoconf macros to disable these
-# warnings, but this place is not the right one for that.
-# So let's keep only GCC warnings, which we know are sane.
-# Well, that's only part of the story: some assemblers issue warnings
-# which can be totally useless, and actually polluting.  It seems that
-# the best bet be to completely ignore stderr, but to pass -Werror
-# to GCC.
-if test "$GCC" = yes; then
-  CFLAGS="$CFLAGS -Werror"
-fi
 AT_CHECK([$CC $CFLAGS $CPPFLAGS calc.c -o calc], 0, [], [ignore])
 
 # Test the priorities.