[Bug c++/66787] New: gcc fails tail call elimination

[denmark114 at naver dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66787

            Bug ID: 66787
           Summary: gcc fails tail call elimination
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: denmark114 at naver dot com
  Target Milestone: ---

Created attachment 35921
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35921&action=edit
source file

In the attached `test.cpp`, BlendingTable::create and BlendingTable::print are
two tail-recursive functions with the same form. gcc will optimize
BlendingTable::print as a loop but it fails to do so for BlendingTable::create,
resulting in stack overflow.