C++ PATCH for c++/58632 (ICE with class shadowing template parm)

Jason Merrill jason@redhat.com
Tue Jan 28 18:46:00 GMT 2014

This ICE was introduced when I adjusted lookup_and_check_tag to find 
template template parameters so that they can be friends.  But in this 
case that meant we started to try to define the ttp as a class, leading 
to chaos.  In lookup_and_check_tag we can tell that we're in a class 
definition by looking at the scope, and then ignore ttp in that specific 

Tested x86_64-pc-linux-gnu, applying to trunk and 4.8.
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