[Voted into WP at July, 2009 meeting as part of N2932.]

Notes from the March, 2009 meeting:

The CWG was in favor of throwing an exception derived from std::bad_alloc. This would be upwardly compatible; it would be harmless for programs that currently catch std::bad_alloc, but would allow programs to treat the calculation overflow case separately if they wish.

Throwing std::length_error (7.6.2.8 [expr.new] paragraph 7) for an attempt to allocate a too-large array brings in too much of the Standard library. A simpler exception, like std::bad_alloc, should be thrown instead.