[Bug c++/64372] New: Spurious warning with throw in ternary operator returning const reference

[tavianator at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64372

            Bug ID: 64372
           Summary: Spurious warning with throw in ternary operator
                    returning const reference
           Product: gcc
           Version: 4.9.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: tavianator at gmail dot com

The following program produces a spurious warning:

$ cat ternary-warning.cpp
const char&
foo(const char* ptr)
{
  return ptr ? *ptr : throw ptr;
}
$ g++ -Wall -c ternary-warning.cpp
ternary-warning.cpp: In function ‘const char& foo(const char*)’:
ternary-warning.cpp:4:29: warning: returning reference to temporary
[-Wreturn-local-addr]
   return ptr ? *ptr : throw ptr;
                             ^