[SI-LIST] The YACC-compatible Parser Generator produces errors when processing the ICM lex&Yacc files

Hi all,

When I use bison to convert the ICM parser Yacc file (ibis-icm-yacc.y) to C 
program, like this:

/usr/bin/bison -d -p ICM ibis-icm-yacc.y

It produces many errors, like these:

ibis-icm-yacc.y:587: invalid @-construct

ibis-icm-yacc.y:587: $. is invalid

ibis-icm-yacc.y:587: invalid @-construct

ibis-icm-yacc.y:587: $. is invalid

ibis-icm-yacc.y:588: invalid @-construct

ibis-icm-yacc.y:588: $. is invalid

ibis-icm-yacc.y:588: invalid @-construct

ibis-icm-yacc.y:588: $. is invalid

ibis-icm-yacc.y:594: invalid @-construct

ibis-icm-yacc.y:594: $  is invalid

...

It seems that once bison encounters a "@$", an error message is generated.

And I can not find any rules describing this in Lex&Yacc.

Anyone can give me some solutions to this issue ?

Thanks in advanced

Shulong

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