[PATCH] D12000: Bugfix - Clang handles __builtin_object_size in wrong way

[George Burgess IV via cfe-commits]

george.burgess.iv created this revision.
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Attached is a fix for https://llvm.org/bugs/show_bug.cgi?id=15212 .

Summary: Tighten up some of the results for __builtin_object_size(ptr, type) when given type == 1 or type == 3 + fixed a bug where we would report incorrect results for type == 3.

> 90% of the patch is courtesy of Richard Smith. :)


http://reviews.llvm.org/D12000

Files:
  lib/AST/ExprConstant.cpp
  test/CodeGen/object-size.c
  test/Sema/const-eval.c

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