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v0.8.1
https://github.com/python/cpython
Revision 8de34cdb952a2e3b8d7a9a213845cad01a8cece3 authored by Pablo Galindo on 02 September 2020, 20:30:51 UTC, committed by GitHub on 02 September 2020, 20:30:51 UTC
[3.9] bpo-41690: Use a loop to collect args in the parser instead of recursion (GH-22053) (GH-22067)
This program can segfault the parser by stack overflow:
```
import ast
code = "f(" + ",".join(['a' for _ in range(100000)]) + ")"
print("Ready!")
ast.parse(code)
```
the reason is that the rule for arguments has a simple recursion when collecting args:
args[expr_ty]:
[...]
| a=named_expression b=[',' c=args { c }] {
[...] }.
(cherry picked from commit 4a97b1517a6b5ff22e2984b677a680b07ff0ce11)
Co-authored-by: Pablo Galindo <Pablogsal@gmail.com> 1 parent a763ee3
Tip revision: 8de34cdb952a2e3b8d7a9a213845cad01a8cece3 authored by Pablo Galindo on 02 September 2020, 20:30:51 UTC
[3.9] bpo-41690: Use a loop to collect args in the parser instead of recursion (GH-22053) (GH-22067)
[3.9] bpo-41690: Use a loop to collect args in the parser instead of recursion (GH-22053) (GH-22067)
Tip revision: 8de34cd
intrcheck.h
#ifndef Py_INTRCHECK_H
#define Py_INTRCHECK_H
#ifdef __cplusplus
extern "C" {
#endif
PyAPI_FUNC(int) PyOS_InterruptOccurred(void);
PyAPI_FUNC(void) PyOS_InitInterrupts(void);
#ifdef HAVE_FORK
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03070000
PyAPI_FUNC(void) PyOS_BeforeFork(void);
PyAPI_FUNC(void) PyOS_AfterFork_Parent(void);
PyAPI_FUNC(void) PyOS_AfterFork_Child(void);
#endif
#endif
/* Deprecated, please use PyOS_AfterFork_Child() instead */
Py_DEPRECATED(3.7) PyAPI_FUNC(void) PyOS_AfterFork(void);
#ifndef Py_LIMITED_API
PyAPI_FUNC(int) _PyOS_IsMainThread(void);
PyAPI_FUNC(void) _PySignal_AfterFork(void);
#ifdef MS_WINDOWS
/* windows.h is not included by Python.h so use void* instead of HANDLE */
PyAPI_FUNC(void*) _PyOS_SigintEvent(void);
#endif
#endif /* !Py_LIMITED_API */
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTRCHECK_H */
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