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GH-130396: Use computed stack limits on linux (GH-130398)

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* Implement C recursion protection with limit pointers for Linux, MacOS and Windows

* Remove calls to PyOS_CheckStack

* Add stack protection to parser

* Make tests more robust to low stacks

* Improve error messages for stack overflow
This commit is contained in:
Mark Shannon 2025-02-25 09:24:48 +00:00 • committed by GitHub
parent 99088ab081
commit 014223649c
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GPG key ID: B5690EEEBB952194
58 changed files with 1295 additions and 1482 deletions
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4
Tools/peg_generator/pegen/c_generator.py
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@ -44,7 +44,7 @@ EXTENSION_PREFIX = """\
# define MAXSTACK 4000
# endif
#else
# define MAXSTACK 6000
# define MAXSTACK 4000
#endif
"""
@ -380,7 +380,7 @@ class CParserGenerator(ParserGenerator, GrammarVisitor):
self.cleanup_statements: List[str] = []
def add_level(self) -> None:
self.print("if (p->level++ == MAXSTACK) {")
self.print("if (p->level++ == MAXSTACK || _Py_ReachedRecursionLimitWithMargin(PyThreadState_Get(), 1)) {")
with self.indent():
self.print("_Pypegen_stack_overflow(p);")
self.print("}")