[Bug c++/70338] New: ICE combining debug symbols, range-for in lambda in function template accessing captured variable-size array

["blaffablaffa at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70338

            Bug ID: 70338
           Summary: ICE combining debug symbols, range-for in lambda in
                    function template accessing captured variable-size
                    array
           Product: gcc
           Version: 5.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: blaffablaffa at gmail dot com
  Target Milestone: ---

Created attachment 38045
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38045&action=edit
testcase

The testcase in attachment causes a segfault with 5.3.1 only when compiled with
-g(gdb) or -g(gdb)2 or -g(gdb)3. It appears that some debug symbol generation
cannot handle a complex interaction between template functions, variable-length
arrays and range-for. I have included in the test case examples of functions
that do not crash, taking out some of the elements that put together cause the
ICE.