[Bug c/88660] [8/9/10 Regression] Invalid report of "set but used variable" with -O

[law at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88660

Jeffrey A. Law <law at redhat dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |law at redhat dot com
           Assignee|unassigned at gcc dot gnu.org      |law at redhat dot com

--- Comment #2 from Jeffrey A. Law <law at redhat dot com> ---
I think we've just got the wrong value for the last argument to the
convert_lvalue_to_ravlue call within c_parser_switch_statement.  That argument
controls whether or not we mark the expression with DECL_READ_P.