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bpo-32329: Fix -R option for hash randomization (#4873)

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bpo-32329, bpo-32030:

* The -R option now turns on hash randomization when the
  PYTHONHASHSEED environment variable is set to 0 Previously, the
  option was ignored.
* sys.flags.hash_randomization is now properly set to 0 when hash
  randomization is turned off by PYTHONHASHSEED=0.
* _PyCoreConfig_ReadEnv() now reads the PYTHONHASHSEED environment
  variable. _Py_HashRandomization_Init() now only apply the
  configuration, it doesn't read PYTHONHASHSEED anymore.
This commit is contained in:
Victor Stinner 2017-12-15 00:51:22 +01:00 • committed by GitHub
parent 96a5e50a5d
commit 358e5e17a5
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6 changed files with 63 additions and 39 deletions
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8
Include/pylifecycle.h
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@ -136,7 +136,13 @@ PyAPI_FUNC(_PyInitError) _PyImportHooks_Init(void);
PyAPI_FUNC(int) _PyFrame_Init(void);
PyAPI_FUNC(int) _PyFloat_Init(void);
PyAPI_FUNC(int) PyByteArray_Init(void);
PyAPI_FUNC(_PyInitError) _Py_HashRandomization_Init(_PyCoreConfig *core_config);
PyAPI_FUNC(_PyInitError) _Py_HashRandomization_Init(const _PyCoreConfig *);
#endif
#ifdef Py_BUILD_CORE
PyAPI_FUNC(int) _Py_ReadHashSeed(
const char *seed_text,
int *use_hash_seed,
unsigned long *hash_seed);
#endif
/* Various internal finalizers */