[cfe-commits] patch: warn on allocating over-aligned objects

[Nick Lewycky]

The attached patch warns on new expressions for types that are
over-allocated, when the "operator new" that will be called is not
overridden. Either the operator new in the class or in the global space can
override, unless it's a global operator new from a system header. This
addresses PR9527.

pr9527-2.cc:13:3: warning: type 'Test' requires 64 bytes of alignment and
the
      default allocator only guarantees 16 bytes [-Woveraligned]
  new Test;
  ^

Nick
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