[llvm-bugs] [Bug 38300] Wrong exception deduction for some forms of placement new

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Jul 25 07:51:37 PDT 2018


David Blaikie <dblaikie at gmail.com> changed:

           What    |Removed                     |Added
                 CC|                            |dblaikie at gmail.com,
                   |                            |richard-llvm at metafoo.co.uk
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #1 from David Blaikie <dblaikie at gmail.com> ---
I'm going to go out on a limb (again, Richard can correct me if I'm wrong here)
and say that Clang's behavior is correct.

The throwing behavior quoted from [expr.new]p7 has no handling/changes in
behavior for "new (nothrow)" - and all the behavior for "new (nothrow)" is
about the underlying operator new call, not the new expression. This code never
gets as far as calling 'operator new' because of that size mismatch.

Looks to me like GCC is buggy here - or at least that the spec is maybe
underspecified/unclear on this case.

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