[LLVMbugs] [Bug 22894] New: Cannot get layout of forward declaration!

[bugzilla-daemon at llvm.org]

https://llvm.org/bugs/show_bug.cgi?id=22894

            Bug ID: 22894
           Summary: Cannot get layout of forward declaration!
           Product: clang
           Version: trunk
          Hardware: Macintosh
                OS: MacOS X
            Status: NEW
          Severity: normal
          Priority: P
         Component: libclang
          Assignee: unassignedclangbugs at nondot.org
          Reporter: haxmeadroom at gmail.com
                CC: klimek at google.com, llvmbugs at cs.uiuc.edu
    Classification: Unclassified

Created attachment 14041
  --> https://llvm.org/bugs/attachment.cgi?id=14041&action=edit
Example c file that causes the crash

Parsing the AST using a RecursiveASTVisitor and attempting to get the type size
causes an assert.  Followed the guide at
http://clang.llvm.org/docs/LibASTMatchersTutorial.html , and created a simple
ASTVisitor that eventually calls-

    context->getTypeSize( node->getType() ) ;

..which causes this trap

Assertion failed: (D && "Cannot get layout of forward declarations!"), function
getASTRecordLayout, file
/Users/clang-llvm/llvm/tools/clang/lib/AST/RecordLayoutBuilder.cpp, line 2875.

Abort trap: 6


Attached is the example file that causes the crash.  

Setup info
----------
uname: Darwin 14.1.0 Darwin Kernel Version 14.1.0: Thu Feb 26 19:26:47 PST
2015; root:xnu-2782.10.73~1/RELEASE_X86_64 x86_64


git: 99436fd8cdc553eca1997f27ef00db71b897e29c

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