[Bug middle-end/82958] New: uninitialized used warning missed when variable is both in function argument and return value within a loop

[danielgutson at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82958

            Bug ID: 82958
           Summary: uninitialized used warning missed when variable is
                    both in function argument and return value within a
                    loop
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: danielgutson at gmail dot com
  Target Milestone: ---

Created attachment 42591
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42591&action=edit
test case

flags: -Wall -Wextra -Wpedantic

Try with and without -DBUG.