[PATCH] Don't crash generating DWARF debug info for an ObjC property of type void

[Scott Talbot]

In both 3.4 and HEAD, generating DWARF debug info with an ObjC property of type void results in a crash in the compiler due to a failed assertion.
That assertion was added in r187963, where it replaced a test with an early-return if the type was invalid.
This change restores the previous behaviour, preventing the emission of a type node for void ObjC properties.

Scott Talbot (2):
 Avoid emitting a DWARF type for an ObjC property of type void
 Test that an ObjC property of type void is accepted

lib/CodeGen/AsmPrinter/DwarfUnit.cpp       |  3 +-
test/CodeGen/Generic/objc-property-void.ll | 83 ++++++++++++++++++++++++++++++
2 files changed, 85 insertions(+), 1 deletion(-)
create mode 100644 test/CodeGen/Generic/objc-property-void.ll

-Scott


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