Hello, as a "me too" mail, I noted that bison core dumped with this yacc file:
<---> %{ %} %token <val> NUMBER %token <str> WORD %type <str> rule %type <val> signed_number %% rule: WORD = { $$ = $1; } | /* empty */ = { $$ = NULL; }; signed_number: NUMBER = { $$ = $1; } | '-' NUMBER = { $$ = -$2; }; %% <---> bison failed only for a command line with the -d option like: bison -y -d <file>.y The segmentation fault occured in a malloc, with a desired size of 8 in my case. Hope this helps. Benoit -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/