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Bug 231073: lang/python27: consumers cannot build with Clang in C++17 mode
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231073
--- Description ---
Consumers may want to switch to C++17 but some dependencies aren't ready for
Python 3.* or C++17 library may want to keep supporting Python 2.* in addition
to Python 3.*.
$ echo '#include <Python.h>' >a.cc
$ c++ -std=gnu++17 $(python2.7-config --cflags) -c a.cc
In file included from a.cc:1:
In file included from /usr/local/include/python2.7/Python.h:88:
/usr/local/include/python2.7/unicodeobject.h:534:5: error: ISO C++17 does not
allow 'register' storage class
specifier [-Wregister]
register PyObject *obj, /* Object */
^~~~~~~~~
/usr/local/include/python2.7/unicodeobject.h:553:5: error: ISO C++17 does not
allow 'register' storage class
specifier [-Wregister]
register PyObject *obj /* Object */
^~~~~~~~~
/usr/local/include/python2.7/unicodeobject.h:575:5: error: ISO C++17 does not
allow 'register' storage class
specifier [-Wregister]
register const wchar_t *w, /* wchar_t buffer */
^~~~~~~~~
/usr/local/include/python2.7/unicodeobject.h:593:5: error: ISO C++17 does not
allow 'register' storage class
specifier [-Wregister]
register wchar_t *w, /* wchar_t buffer */
^~~~~~~~~
In file included from a.cc:1:
In file included from /usr/local/include/python2.7/Python.h:97:
/usr/local/include/python2.7/stringobject.h:173:5: error: ISO C++17 does not
allow 'register' storage class
specifier [-Wregister]
register PyObject *obj, /* string or Unicode object */
^~~~~~~~~
/usr/local/include/python2.7/stringobject.h:174:5: error: ISO C++17 does not
allow 'register' storage class
specifier [-Wregister]
register char **s, /* pointer to buffer variable */
^~~~~~~~~
/usr/local/include/python2.7/stringobject.h:175:5: error: ISO C++17 does not
allow 'register' storage class
specifier [-Wregister]
register Py_ssize_t *len /* pointer to length variable or NULL
^~~~~~~~~
7 errors generated.
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