Evan Cheng 9419dfe08a Fix a couple of Dwarf bugs.
- Emit DW_AT_byte_size for struct and union of size zero.
- Emit DW_AT_declaration for forward type declaration.

llvm-svn: 60812
2008-12-10 00:15:44 +00:00
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2008-12-10 00:15:44 +00:00