mirror of https://github.com/python/cpython
4a97b1517a
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 }] {
[...] }
|
||
|---|---|---|
| .. | ||
| Python.asdl | ||
| asdl.py | ||
| asdl_c.py | ||
| myreadline.c | ||
| parser.c | ||
| peg_api.c | ||
| pegen.c | ||
| pegen.h | ||
| string_parser.c | ||
| string_parser.h | ||
| token.c | ||
| tokenizer.c | ||
| tokenizer.h | ||