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Author SHA1 Message Date
David Majnemer e4e3e6a5bf [Sema] Tweak incomplete enum types on MSVC ABI targets 
Enums without an explicit, fixed, underlying type are implicitly given a
fixed 'int' type for ABI compatibility with MSVC.  However, we can
enforce the standard-mandated rules on these types as-if we didn't know
this fact if the tag is not part of a definition.

llvm-svn: 249667
 2015-10-08 07:45:35 +00:00
David Majnemer c10b8381f7 Update tests touched by r249656 
These test updates almost exclusively around the change in behavior
around enum: enums without a definition are considered incomplete except
when targeting MSVC ABIs.  Since these tests are interested in the
'incomplete-enum' behavior, restrict them to %itanium_abi_triple.

llvm-svn: 249660
 2015-10-08 06:31:22 +00:00
Eli Friedman e98194d9e8 Check for casts to an incomplete type in C. Improves diagnostics for cast to 
incomplete union (PR5692) and incomplete enum, and fixes obscure
accepts-invalid on cast to incomplete struct.

llvm-svn: 108630
 2010-07-17 20:43:49 +00:00