I converted one of my parsers to generate C++. I'm seeing a warning
that makes me wonder if I should do something differently. I am using:
%define api.location.type {cbl_loc_t}
%require "3.5.1" // 3.8.2 also works, but not 3.8.0
%language "c++"
%define api.prefix {ydf}
%define api.token.prefix{YDF_}
%locations
%define parse.error verbose
where cbl_loc_t looks just like the default YYLTYPE.
The warning is:
cdf.cc: In member function ?virtual int ydf::parser::parse()?:
cdf.cc:595:9: warning: variable ?yynerrs_?
set but not used [-Wunused-but-set-variable=]
595 | int yynerrs_ = 0;
| ^~~~~~~~
The compiler has two parsers. I intend them both to use the same
error function:
void yyerror( const char gmsgid[], ... );
which increments my own error count, independent of the generated
parser. So I don't think I *need* parser::parser::yynerrs_. But I
also don't know how I could use it if I wanted to.
$ bison --version
bison (GNU Bison) 3.8.2
Thank you.
--jkl
