zero-initialize the first union member. Also fix a bug where initializing an
array of types compatible with wchar_t from a wide string literal failed in C,
and fortify the C++ tests in this area. This part can't be tested without a code
change to enable array evaluation in C (where an existing test fails).
llvm-svn: 148035
initializer to update the type of the declaration. For example, this
allows us to determine the size of an incomplete array from its
initializer. Fixes PR10288.
llvm-svn: 141543