Clean way to end the parsing of a bison parser

I am writing a small expression analyser parser for a project at the company where I work. The parser is supposed to check, for example, a division by zero or an undefined identifier, report the error and stop. What is the best way to do this? Assuming that my own code has no memory leaks, can I 开发者_Go百科simply do this:

if ($3 == 0) {
  yyerror("Division by zero");
  return 1;
}

should I rather do:

if ($3 == 0) {
  yyerror("Division by zero");
  YYERROR;
}

is there a third better alternative?

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There is a third option indeed: YYACCEPT

If you are trying to stop the parsing because the input was valid and without errors(Since you are making a parser to detect errors, then it's not a parser error, the input did fit in the grammar's rules).

This leaves YYERROR for grammatical errors (like receiving a string from another language)

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If you call yyerror explicitly, how about using YYABORT? As far as I see, bison seems to perform some cleanups at exit. So, YYABORT or YYERROR will be more preferable to return 1.