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PR20217: overload warnings
authorFelix Lu <flu@redhat.com>
Fri, 5 Aug 2016 15:28:40 +0000 (11:28 -0400)
committerFelix Lu <flu@redhat.com>
Tue, 9 Aug 2016 13:32:22 +0000 (09:32 -0400)
commitc470210a01eb66252438ed2e28220abe6ab70df3
treec2c15b2079c174672d61b24031a6618c4dbeadd1
parent2c3f3f5ffad5c4f1f7209b8e476ec1c5ac65f0b2
PR20217: overload warnings

Add a warning for overloaded functions that can't be reached
and also prevent them from being generated at all.

* elaborate.cxx: New struct function_next_check. New struct
  dead_overload_remover. New semantic_pass_overload function
  for optimization pass.
elaborate.cxx
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