idlc file generation with the latest version of the core library

[mermakov]

Hello!

I've tried to run idlc build with the latest version of the core library (https://github.com/eclipse-cyclonedds/cyclonedds) and the current master of this repo and there seems to an issue causing a segmentation fault.

$ cd <A>/cyclonedds
$ git rev-parse HEAD
d6684dc96e7ef092869688358753e49e33e9bbc2
$ mkdir build && cd build
$ cmake -DCMAKE_INSTALL_PREFIX=../install ..
$ cmake --build .
$ make install
...

$ cd <B>/cyclonedds-python
$ git rev-parse HEAD
8fb9d0d65500c9597fa6e6240b40498cb6120885
$ virtualenv .venv
$ source .venv/bin/activate
$ CYCLONEDDS_HOME=<A>/cyclonedds/install pip install .

foo.idl with a simple definition:

struct foo {
    long x;
};

$ cd whatever
$ source <B>/cyclonedds-python/.venv/bin/activate
$ gdb --args <A>/cyclonedds/install/bin/idlc -l py foo.idl
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Reading symbols from <A>/cyclonedds/install/bin/idlc...
(gdb) r
Starting program: <A>/cyclonedds/install/bin/idlc -l py foo.idl
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Detaching after vfork from child process 4118510]
No default extensibility provided. For one or more of the aggregated types in the IDL the extensibility is not explicitly set. Currently the default extensibility for these types is 'final', but this may change to 'appendable' in a future release because that is the default in the DDS XTypes specification.

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7f68fe3 in generate (pstate=0x5555555ee160, config=0x7fffffffdc10) at idlpy/src/generator.c:45
45	    path = pstate->sources->path->name;
(gdb) p pstate->sources
$1 = (idl_source_t *) 0x0
(gdb) bt
#0  0x00007ffff7f68fe3 in generate (pstate=0x5555555ee160, config=0x7fffffffdc10) at idlpy/src/generator.c:45
#1  0x000055555555a9c6 in main (argc=4, argv=0x7fffffffdd58) at <A>/cyclonedds/src/tools/idlc/src/idlc/idlc.c:799

The same works with main Python branch and 0.10.3 version of the native library fine.

[mermakov]

OK, I think I messed something up during installation, can no longer reproduce this, sorry.