char *strcat(char *dest, const char *src);
#endif
#include <ctype.h>
-]$4[
static int power (int base, int exponent);
static void yyerror (const char *s);
extern void perror (const char *s);
%}
-/* BISON Declarations */
+/* Bison Declarations */
+%token CALC_EOF 0
%token NUM
%nonassoc '=' /* comparison */
%left NEG /* negation--unary minus */
%right '^' /* exponentiation */
+]$4[
+
/* Grammar follows */
%%
input:
/* Return end-of-file. */
if (c == EOF)
- return 0;
+ return CALC_EOF;
/* Return single chars. */
return c;
# Produce `calc.y'.
m4_define([AT_DATA_CALC_Y],
[_AT_DATA_CALC_Y($[1], $[2], $[3],
- [m4_match([$1], [--yyerror-verbose],
- [[#define YYERROR_VERBOSE 1]])])])
+ [m4_bmatch([$1], [--yyerror-verbose],
+ [[%error-verbose]])])])
# Maybe some day we will have proper Autoconf macros to disable these
# warnings, but this place is not the right one for that.
# So let's keep only GCC warnings, which we know are sane.
-AT_CHECK([$CC $CFLAGS $CPPFLAGS calc.c -o calc], 0, [], [stderr])
-AT_CHECK([test "$GCC" = yes && cat stderr])
+# 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.
_AT_CHECK_CALC([$1],
# Some parse errors.
_AT_CHECK_CALC_ERROR([$1], [+1], [8],
[1.0:1.1],
- [unexpected `'+''])
+ [unexpected '+'])
_AT_CHECK_CALC_ERROR([$1], [1//2], [17],
[1.2:1.3],
- [unexpected `'/'', expecting `NUM' or `'-'' or `'(''])
+ [unexpected '/', expecting NUM or '-' or '('])
_AT_CHECK_CALC_ERROR([$1], [error], [8],
[1.0:1.1],
- [unexpected `$undefined.'])
+ [unexpected $undefined.])
_AT_CHECK_CALC_ERROR([$1], [1 = 2 = 3], [23],
[1.6:1.7],
- [unexpected `'=''])
+ [unexpected '='])
_AT_CHECK_CALC_ERROR([$1],
[
+1],
[16],
[2.0:2.1],
- [unexpected `'+''])
+ [unexpected '+'])
-AT_CLEANUP(calc calc.c calc.h calc.output)
+AT_CLEANUP
])# AT_CHECK_CALC