C++ PATCH for c++/49418 (lost cv-quals on template parameter type)

Jason Merrill jason@redhat.com
Tue Jun 21 20:11:00 GMT 2011

cv-qualifiers are dropped from a function parameter type in order to 
produce the parameter-type-list, but the parameter itself still has the 
qualified type within the function body.  When I added cv-qualification 
stripping to type_decays_to, it started affecting instantiation of 
template function parameters, which is wrong.  So I've reverted that 
change and instead added explicit cv-qualification stripping to 

While looking at this, I've also changed a few more TYPE_MAIN_VARIANTs 
to cv_unqualified.

Tested x86_64-pc-linux-gnu, applying to trunk.  I'll apply the first 
part to 4.6 after the branch unfreezes.
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