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gh-107080: Fix Py_TRACE_REFS Crashes Under Isolated Subinterpreters (gh-107567)

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The linked list of objects was a global variable, which broke isolation between interpreters, causing crashes. To solve this, we've moved the linked list to each interpreter.
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Eric Snow 2023-08-03 13:51:08 -06:00 • committed by GitHub
parent 14fbd4e6b1
commit 58ef741867
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6 changed files with 62 additions and 29 deletions
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11
Include/internal/pycore_runtime_init.h
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@ -157,6 +157,7 @@ extern PyTypeObject _PyExc_MemoryError;
{ .threshold = 10, }, \
}, \
}, \
.object_state = _py_object_state_INIT(INTERP), \
.dtoa = _dtoa_state_INIT(&(INTERP)), \
.dict_state = _dict_state_INIT, \
.func_state = { \
@ -186,6 +187,16 @@ extern PyTypeObject _PyExc_MemoryError;
.context_ver = 1, \
}
#ifdef Py_TRACE_REFS
# define _py_object_state_INIT(INTERP) \
{ \
.refchain = {&INTERP.object_state.refchain, &INTERP.object_state.refchain}, \
}
#else
# define _py_object_state_INIT(INTERP) \
{ 0 }
#endif
// global objects