[cfe-dev] libclang's Indexer assertion on translation unit in large C++ codebase

[Daniel Jennings]

Hi all,

I'm currently trying to run libclang's indexer over parts of an existing
(large) codebase (that has never seen clang before) in order to run some
metrics. I've got it working for some scenarios but in the process of
getting it working I've run into a failed assertion in clang's AST code that
I'm not sure how to track down. This problem only seems to exist when I try
to run the indexer over parts of the real codebase; simple test CPP files
work fine. As you'll see by the message, I'm using the python bindings for
libclang, and I have my own locally built libclang.dll built under VS2010.

Program: c:\Python27-32\python.exe
File: E:\llvm\tools\clang\include\clang/AST/DeclCXX.h
Line: 522
Expression: DefinitionData && "queried property of class with no definition"

and

libclang: crash detected during parsing: {
  'source_filename' : '(null)'
  'command_line_args' : ['u:\Code\Services\MyService\MyService.cpp'],
  'unsaved_files' : [],
  'options' : 0,
}


I'm not entirely sure how to track this down and figure out if I'm doing
something wrong. I'm just trying to run the indexer over a single
translation unit (a single CPP file) but that CPP file includes all of our
normal core headers, etc. which I think may be the problem. By this point
I'm very familiar with how the Python bindings work/wrap the libclang code,
and I have my IDE set up for working with libclang code, so if you need me
to poke around or add some sort of diagnostic code I can.


Thanks!

Daniel Jennings
GW2 Gameplay Programmer
ArenaNet
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