Subject: Re: Lvalues cannot be in/decremented
From: Dave Rich (David.Rich@synopsys.com)
Date: Tue Nov 26 2002 - 00:44:28 PST
C says that the result of inc/dec operation cannot be a lvalue. I think
that is what you meant.
I suggest correcting Sec 8.5 of the BNF
OLD:
variable_lvalue ::=
variable_lvalue_item [ inc_or_dec_operator ]
| hierarchical_variable_identifier ( [ constant_expression { ,
constant_expression } ] )
NEW:
variable_lvalue ::=
variable_lvalue_item
| hierarchical_variable_identifier ( [ constant_expression { ,
constant_expression } ] )
Dave
Brad Pierce wrote:
>I've confirmed with Peter Flake that the following
>are illegal --
>
> 1) i++ = ...
>
> 2) ++i++
>
>and are rejected by Systemsim, because an lvalue cannot
>be incremented or decremented. Hence, the BNF which
>accepts these is incorrect and needs to be fixed.
>
>-- Brad
>
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-- -- Dave Rich Principal Engineer, CAE, VTG Tel: 650-584-4026 Cell: 510-589-2625 DaveR@Synopsys.com
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