YACC->Bison

kerrr@my-dejanews.com
16 May 1999 15:16:40 -0400

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YACC->Bison kerrr@my-dejanews.com (1999-05-16)
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Re: YACC->Bison javid@sasi.com (Javeed Ahmed) (1999-09-10)
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From: kerrr@my-dejanews.com
Newsgroups: comp.compilers
Date: 16 May 1999 15:16:40 -0400
Organization: Compilers Central
Keywords: yacc, question, comment

Hi,
We're working on porting our application to Linux, and have a section
that we're having trouble with. I've got a file named idr_parser.y,
which is compile with yacc. This will need to be compiled with bison.
The current code gives me this error:


Compiling: idr_parser.y
yacc -vdl idr_parser.y
("idr_parser.y", line 107) error: type clash (`' `token_id') on default
action
make[1]: *** [idr_parser.o] Error 1
make[1]: Leaving directory `/home/bob/cubit/source'
make: *** [cubit] Error 2%start statements




The lines in question with their line numbers are:


102: statements :
103: | statements statement
104: ;
105:
106: statement : END
107: | command END
108: {
109: debug_idr_num("statement", "END", "number of entries",
(Real)cntr);


Can someone point me the way to figure out how to make this code correct
for both yacc and bison?
Thanks


-bob
Robert_Kerr@byu.edu
[All versions of yacc, of which bison is one, apply a default action of
$$ = $1 to any rule without explicit action code. I'd guess that it's
counting the lines wrong and you have a rule with a token_id that is
default assigned to a LHS of a different type. -John]


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