Hello,
I've found bug in bison 2.1. I'm using Windows and I can not test this
with new version 2.3, because I can't find 2.3 executables for windows.
I've use bison for much larger file, but this is reduced sample to
indicate a problem.
b.y:
--------------------------------
%%
Crlf : '\n' { }
;
--------------------------------
Command
bison -v -d b.y -ob.c
produces b.c file, which fails to compile. The reason of failure is this
part of code:
--------------------------------
/*----------.
| yyparse. |
`----------*/
#ifdef YYPARSE_PARAM
# if defined (__STDC__) || defined (__cplusplus)
int yyparse (void *YYPARSE_PARAM)
# else
int yyparse (YYPARSE_PARAM)
void *YYPARSE_PARAM;
# endif
#else /* ! YYPARSE_PARAM */
#if defined (__STDC__) || defined (__cplusplus)
int
yyparse (void)
#else
int
yyparse ()
;
#endif
#endif
{
--------------------------------
Function declaration is invalid, because of extra ";":
--------------------------------
int
yyparse ()
;
{
--------------------------------
I've made a change in file share/bison/c.m4 from:
--------------------------------
m4_define([b4_c_knr_formal_decls],
[m4_map_sep([b4_c_knr_formal_decl],
[
],
[EMAIL PROTECTED])])
--------------------------------
to:
--------------------------------
m4_define([b4_c_knr_formal_decls],
[m4_case([EMAIL PROTECTED],
[], [],
[[]], [],
[m4_map_sep([b4_c_knr_formal_decl],
[
],
[EMAIL PROTECTED])])])
--------------------------------
This fixes the problem, but I'm not sure if it is a correct solution.
Is it a bug of bison or the problem is inside my grammar file? Thank You
for the answer.
Best regrds,
Mindaugas
