Hello,
Here is my log:
[debashis@k2 src]$ ./bison --version
bison (GNU Bison) 3.0.4
Written by Robert Corbett and Richard Stallman.
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
[debashis@k2 src]$ cat ~/t.y
%start st1
%destructor { } st1
%type <int> st2
%token st3
%%
st1 : st2 { /* $$ = 0 ; */ } ;
st2 : st3 { $$ = 0 ; } ;
%%
[debashis@k2 src]$ ./bison ~/t.y
/home/debashis/t.y:10.7-28: warning: unset value: $$ [-Wother]
st1 : st2 { /* $$ = 0 ; */ } ;
^^^^^^^^^^^^^^^^^^^^^^
[debashis@k2 src]$
Thanks and regards,
Debashis
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