[LLVMbugs] [Bug 18564] Redefinition of identical typedefs fails

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=18564

Richard Smith <richard-llvm at metafoo.co.uk> changed:

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

--- Comment #1 from Richard Smith <richard-llvm at metafoo.co.uk> ---
Two different struct definitions do not define the same type: C11 6.7.2.1/8:
"The presence of a struct-declaration-list in a struct-or-union-specifier
*declares a new type*, within a translation unit."

They don't even define compatible types if they're defined in the same
translation unit: C11 6.2.7/1: "Moreover, two structure, union, or enumerated
types *declared in separate translation units* are compatible if [...]".


Therefore Clang is correct here, aside from incorrectly naming the type as
'struct ab' both times.

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