[Bug c++/87235] New: g++ doesn't implement sparse initialisation of arrays

[dhowells at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87235

            Bug ID: 87235
           Summary: g++ doesn't implement sparse initialisation of arrays
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dhowells at redhat dot com
  Target Milestone: ---

Created attachment 44662
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44662&action=edit
Testcase

g++ doesn't implement simple sparse array initialisations, such as:

int a[] = {
    [3] = 99,
    [5] = 82,
};

This can be seen by compiling the attached program with "g++ -c x.cpp".

g++ produces lots of "sorry, unimplemented: non-trivial designated initializers
not supported" errors.