[Bug libstdc++/21183] New: -Wall control may end non-void fn warning in libc++ routine

["mj1 at cog dot brown dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

When compiling a C++ program with -Wall, I get the following compiler warning

/usr/local/bin/../lib/gcc/i686-pc-linux-gnu/4.0.0/../../../../include/c++/4.0.0/bits/stl_uninitialized.h:113:
warning: control may reach end of non-void function '_ForwardIterator
std::__uninitialized_copy_aux(_InputIterator, _InputIterator, _ForwardIterator,
__false_type) [with _InputIterator = pr_type*, _ForwardIterator = pr_type*]'
being inlined

The problem seems to be in __uninitialized_copy_aux() in stl_uninitialized.h

The catch statement block beginning on line 89 merely exits the routine without 
actually returning a value.

The warning would not be given if a dummy return statement were added after 
line 92 (even though the return statement could never be executed).

-- 
           Summary: -Wall control may end non-void fn warning in libc++
                    routine
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mj1 at cog dot brown dot edu
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21183