Details
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Task
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Status: Closed (View Workflow)
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Blocker
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Resolution: Fixed
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master, 6.22/00
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None
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None
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LHCb nightly builds against ROOT 6.22-patches and master
Description
This simple example does work with ROOT 6.20, but fails with ROOT 6.22:
import cppyy |
cppyy.gbl.gInterpreter.Declare('''
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struct NoCopy {
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NoCopy() = default; |
NoCopy(const NoCopy&) = delete; |
virtual ~NoCopy() = default; |
};
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struct MyClass : NoCopy {};
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''')
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class MyDerived(cppyy.gbl.MyClass): |
pass |
because it tries to generate a dispatcher class with an explicit copy constructor.
This is the full log:
$ source /cvmfs/sft-nightlies.cern.ch/lcg/views/dev4/Mon/x86_64-centos7-gcc9-opt/setup.sh |
$ python
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Python 2.7.16 (default, Apr 30 2020, 17:53:11) |
[GCC 9.2.0] on linux2 |
Type "help", "copyright", "credits" or "license" for more information. |
>>> import cppyy |
/cvmfs/sft-nightlies.cern.ch/lcg/views/dev4/Mon/x86_64-centos7-gcc9-opt/lib/cppyy_backend/loader.py:113: UserWarning: No precompiled header available (/cvmfs/sft-nightlies.cern.ch/lcg/views/dev4/Mon/x86_64-centos7-gcc9-opt/lib/cppyy_backend/etc not writable); this may impact performance. |
warnings.warn('No precompiled header available (%s); this may impact performance.' % msg) |
>>> cppyy.gbl.gInterpreter.Declare('''
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... struct NoCopy {
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... NoCopy() = default; |
... NoCopy(const NoCopy&) = delete; |
... virtual ~NoCopy() = default; |
... };
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... struct MyClass : NoCopy {};
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... ''')
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True
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>>> class MyDerived(cppyy.gbl.MyClass): |
... pass |
...
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input_line_26:9:43: error: call to implicitly-deleted copy constructor of '::MyClass' |
Dispatcher1(const Dispatcher1& other) : MyClass(other), m_self(other.m_self, this) {}
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^ ~~~~~
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input_line_24:7:18: note: copy constructor of 'MyClass' is implicitly deleted because base class 'NoCopy' has a deleted copy constructor |
struct MyClass : NoCopy {};
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^
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input_line_24:4:3: note: 'NoCopy' has been explicitly marked deleted here |
NoCopy(const NoCopy&) = delete; |
^
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__main__:1: RuntimeWarning: no python-side overrides supported |
>>>
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