[cfe-dev] python libclang

[Laszlo Nagy]

Hi,

I'm trying to use python binding to libclang to generate include graphs. I
took the example program
(bindings/python/examples/cindex/cindex-includes.py) and add support to
read a JSON compilation database, therefore I can have include graph for a
whole project.

Now, I'm running against the Clang project. And it fails... I compiled
Clang with itself. Without any problem... My tool read the
`compile_commands.json` generated by cmake and pass all arguments (except
the compiler and the module). So it supposes to run the same as it was by
clang... And this is not happen with any modules, it compiles all LLVM code
and the majority of Clang.

Any hints how can I fix it? Or make it reproducible for a bug report?

Regards,
Laszlo


The related JSON file entry looks like this:

{
  "directory":
"/home/laszlona/Programming/llvm-svn.src/build/tools/clang/lib/Serialization",
  "command": "/home/laszlona/Programming/llvm-svn/usr/local/bin/clang++
-D_GNU_SOURCE -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS
-D__STDC_LIMIT_MACROS -D_GNU_SOURCE -DCLANG_ENABLE_ARCMT
-DCLANG_ENABLE_REWRITER -DCLANG_ENABLE_STATIC_ANALYZER  -fPIC
-fvisibility-inlines-hidden -Wno-nested-anon-types -Wcovered-switch-default
-fno-common -Woverloaded-virtual -Wcast-qual -fno-strict-aliasing -pedantic
-Wno-long-long -Wall -W -Wno-unused-parameter -Wwrite-strings -fno-rtti -O2
-g
-I/home/laszlona/Programming/llvm-svn.src/build/tools/clang/lib/Serialization
-I/home/laszlona/Programming/llvm-svn.src/tools/clang/lib/Serialization
-I/home/laszlona/Programming/llvm-svn.src/tools/clang/include
-I/home/laszlona/Programming/llvm-svn.src/build/tools/clang/include
-I/home/laszlona/Programming/llvm-svn.src/build/include
-I/home/laszlona/Programming/llvm-svn.src/include    -Wall -W
-Wno-unused-parameter -Wwrite-strings -Wmissing-field-initializers
-pedantic -Wno-long-long -fno-exceptions -o
CMakeFiles/clangSerialization.dir/ASTWriterStmt.cpp.o -c
/home/laszlona/Programming/llvm-svn.src/tools/clang/lib/Serialization/ASTWriterStmt.cpp",
  "file":
"/home/laszlona/Programming/llvm-svn.src/tools/clang/lib/Serialization/ASTWriterStmt.cpp"
},


The error report looks like this:

python:
/home/laszlona/Programming/llvm-svn.src/tools/clang/lib/Sema/SemaInit.cpp:3153:
clang::OverloadingResult TryRefInitWithConversionFunction(clang::Sema&,
const clang::InitializedEntity&, const clang::InitializationKind&,
clang::Expr*, bool, clang::InitializationSequence&): Assertion
`!S.CompareReferenceRelationship(Initializer->getLocStart(), T1, T2,
DerivedToBase, ObjCConversion, ObjCLifetimeConversion) && "Must have
incompatible references when binding via conversion"' failed.
libclang: crash detected during parsing: {
  'source_filename' :
'/home/laszlona/Programming/llvm-svn.src/tools/clang/lib/Serialization/ASTWriterStmt.cpp'
  'command_line_args' : ['-D_GNU_SOURCE', '-D_DEBUG',
'-D__STDC_CONSTANT_MACROS', '-D__STDC_FORMAT_MACROS',
'-D__STDC_LIMIT_MACROS', '-D_GNU_SOURCE', '-DCLANG_ENABLE_ARCMT',
'-DCLANG_ENABLE_REWRITER', '-DCLANG_ENABLE_STATIC_ANALYZER', '-fPIC',
'-fvisibility-inlines-hidden', '-Wno-nested-anon-types',
'-Wcovered-switch-default', '-fno-common', '-Woverloaded-virtual',
'-Wcast-qual', '-fno-strict-aliasing', '-pedantic', '-Wno-long-long',
'-Wall', '-W', '-Wno-unused-parameter', '-Wwrite-strings', '-fno-rtti',
'-O2', '-g',
'-I/home/laszlona/Programming/llvm-svn.src/build/tools/clang/lib/Serialization',
'-I/home/laszlona/Programming/llvm-svn.src/tools/clang/lib/Serialization',
'-I/home/laszlona/Programming/llvm-svn.src/tools/clang/include',
'-I/home/laszlona/Programming/llvm-svn.src/build/tools/clang/include',
'-I/home/laszlona/Programming/llvm-svn.src/build/include',
'-I/home/laszlona/Programming/llvm-svn.src/include', '-Wall', '-W',
'-Wno-unused-parameter', '-Wwrite-strings', '-Wmissing-field-initializers',
'-pedantic', '-Wno-long-long', '-fno-exceptions', '-o',
'CMakeFiles/clangSerialization.dir/ASTWriterStmt.cpp.o', '-c'],
  'unsaved_files' : [],
  'options' : 0,
}
Traceback (most recent call last):
  File "./bin/include_graph_to_gexf.py", line 107, in <module>
    pool.apply(compile_module_to_queue, args=(q, m))
  File "/usr/lib64/python2.7/multiprocessing/pool.py", line 220, in apply
    return self.apply_async(func, args, kwds).get()
  File "/usr/lib64/python2.7/multiprocessing/pool.py", line 528, in get
    raise self._value
AssertionError
Exception ctypes.ArgumentError: "argument 1: <type
'exceptions.AttributeError'>: 'TranslationUnit' object has noProcess
Process-2:
Traceback (most recent call last):
  File "/usr/lib64/python2.7/multiprocessing/process.py", line 258, in
_bootstrap
    self.run()
  File "/usr/lib64/python2.7/multiprocessing/process.py", line 114, in run
    self._target(*self._args, **self._kwargs)
  File "./bin/include_graph_to_gexf.py", line 76, in build_graph_from_queue
    for e in iter(queue.get, 'STOP'):
  File "<string>", line 2, in get
  File "/usr/lib64/python2.7/multiprocessing/managers.py", line 759, in
_callmethod
    kind, result = conn.recv()
EOFError
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