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Re: [C++ PATCH] Fix -Wunused-but-set-parameter bug with references (PR c++/47783)

On 02/17/2011 02:54 PM, Jakub Jelinek wrote: 
On the following testcase we incorrectly warn that r argument
is set but not used.  For normal references (instead of
references inside of aggregates) we don't warn because we never
consider REFERENCE_TYPE parameters or variables for these warnings.

* cvt.c (convert_from_reference): Call mark_exp_read. 

+foo (R r, int&s)
+{
+  r.i = 7;

Are we giving the warning because of this assignment? That's wrong, this assignment does not modify r.

Jason

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