loadSlice() spurious crash

[jharris]

Ice 3.3.1
Ubuntu Linux 64-Bit gcc
Python 2.6.5

I get a spurious error when loading slice files in python with loadSlice and --all.

Sometimes it works fine by just running again.

The program crashes with this stack:

#5  0x00007ffff56cae3e in __cxa_throw () from /usr/lib/libstdc++.so.6
#6  0x00007ffff5e1db47 in IceUtil::HandleBase<Slice::DefinitionContext>::throwNullHandleException (cont=<value optimized out>)
    at ../../include/IceUtil/Handle.h:89
#7  IceUtil::HandleBase<Slice::DefinitionContext>::operator-> (
    cont=<value optimized out>) at ../../include/IceUtil/Handle.h:46
#8  Slice::Python::getPackageMetadata (cont=<value optimized out>)
    at PythonUtil.cpp:1946
#9  0x00007ffff5e1fafb in Slice::Python::getAbsolute (cont=..., suffix=..., 
    nameSuffix=...) at PythonUtil.cpp:1959
#10 0x00007ffff5e20877 in Slice::Python::CodeVisitor::visitModuleStart (
    this=0x7fffffffd470, p=...) at PythonUtil.cpp:312
#11 0x00007ffff5da168e in Slice::Module::visit (this=0xbf8f80, 
    visitor=0x7fffffffd470, all=false) at Parser.cpp:2255
#12 0x00007ffff5d9bcfe in Slice::Container::visit (this=<value optimized out>, 
    visitor=0x7fffffffd470, all=false) at Parser.cpp:1915
#13 0x00007ffff5db9d0e in Slice::Unit::visit (this=0xbd4040, 
    visitor=0x7fffffffd470, all=6) at Parser.cpp:5533
#14 0x00007ffff5e1e149 in Slice::Python::generate (un=<value optimized out>, 
    all=<value optimized out>, checksum=<value optimized out>, 
    includePaths=..., out=...) at PythonUtil.cpp:1875
#15 0x00007ffff65657c9 in IcePy_loadSlice ()
   from /usr/lib/pymodules/python2.6/IcePy.so
#16 0x00000000004a7c5e in PyEval_EvalFrameEx ()
#17 0x00000000004a8550 in PyEval_EvalFrameEx ()
#18 0x00000000004a9671 in PyEval_EvalCodeEx ()
#19 0x00000000004a9742 in PyEval_EvalCode ()
#20 0x00000000004c9a0e in PyRun_FileExFlags ()
#21 0x00000000004c9c24 in PyRun_SimpleFileExFlags ()
#22 0x000000000041a7ff in Py_Main ()

[mes]

Hi John,

We only provide support here on the forum for the most recent version of Ice. Have you tried using Ice 3.4.1 to see if the problem still occurs?

Regards,
Mark

[jharris]

Unfortunately, I don't have the luxury to use a new version without a planned upgrade of all build and deployment environments and a full regression testing cycle.

I was kind of hoping someone would recognize the issue and recommend a workaround. FWIW, running slice2py from the command line also crashes with the same error if you specify a really long set of command line arguments.