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bpo-35713: Rework Python initialization (GH-11647)

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* The PyByteArray_Init() and PyByteArray_Fini() functions have been
  removed. They did nothing since Python 2.7.4 and Python 3.2.0, were
  excluded from the limited API (stable ABI), and were not
  documented.
* Move "_PyXXX_Init()" and "_PyXXX_Fini()" declarations from
  Include/cpython/pylifecycle.h to
  Include/internal/pycore_pylifecycle.h. Replace
  "PyAPI_FUNC(TYPE)" with "extern TYPE".
* _PyExc_Init() now returns an error on failure rather than calling
  Py_FatalError(). Move macros inside _PyExc_Init() and undefine them
  when done. Rewrite macros to make them look more like statement:
  add ";" when using them, add "do { ... } while (0)".
* _PyUnicode_Init() now returns a _PyInitError error rather than call
  Py_FatalError().
* Move stdin check from _PySys_BeginInit() to init_sys_streams().
* _Py_ReadyTypes() now returns a _PyInitError error rather than
  calling Py_FatalError().
This commit is contained in:
Victor Stinner 2019-01-22 17:39:03 +01:00 • committed by GitHub
parent 35ca1820e1
commit bf4ac2d2fd
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9 changed files with 286 additions and 268 deletions
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16
Python/sysmodule.c
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@ -2381,22 +2381,6 @@ _PySys_BeginInit(PyObject **sysmod)
}
sysdict = PyModule_GetDict(m);
/* Check that stdin is not a directory
Using shell redirection, you can redirect stdin to a directory,
crashing the Python interpreter. Catch this common mistake here
and output a useful error message. Note that under MS Windows,
the shell already prevents that. */
#ifndef MS_WINDOWS
{
struct _Py_stat_struct sb;
if (_Py_fstat_noraise(fileno(stdin), &sb) == 0 &&
S_ISDIR(sb.st_mode)) {
return _Py_INIT_USER_ERR("<stdin> is a directory, "
"cannot continue");
}
}
#endif
/* stdin/stdout/stderr are set in pylifecycle.c */
SET_SYS_FROM_STRING_BORROW("__displayhook__",