[Bug middle-end/64937] New: [5 Regression] compare debug failure with -fsanitize=address

[burnus at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64937

            Bug ID: 64937
           Summary: [5 Regression] compare debug failure with
                    -fsanitize=address
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org

Split-off from PR64935, which shows the same message but is caused by a
different revision.

The attached test case fails for me with
  GCC_COMPARE_DEBUG=yes g++ test.ii -fsanitize=address
with the same message:
  g++: error: test.ii: -fcompare-debug failure (length)

Test case is attachment 34664

Works with current 4.9 branch, fails with today's trunk and also with r220315
(the other PR, PR64935, works with that revision).