Clean way to end the parsing of a bison parser -

i writing small expression analyser parser project @ company work. parser supposed check, example, division 0 or undefined identifier, report error , stop. best way this? assuming own code has no memory leaks, can this:

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

should rather do:

if ($3 == 0) {   yyerror("division zero");   yyerror; } 

is there third better alternative?

if call yyerror explicitly, how using yyabort? far see, bison seems perform cleanups @ exit. so, yyabort or yyerror more preferable return 1.