8000 gh-99240: Fix double-free bug in Argument Clinic str_converter generated code by colorfulappl · Pull Request #99241 · python/cpython · GitHub
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< 8000 bdi class="js-issue-title markdown-title">gh-99240: Fix double-free bug in Argument Clinic str_converter generated code #99241

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Merged
merged 13 commits into from
Nov 24, 2022
Merged

gh-99240: Fix double-free bug in Argument Clinic str_converter generated code #99241

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06b9d4a
Fix double-free bug in Argument Clinic str_converter generated code
colorfulappl Nov 8, 2022
67c3078
Add News
colorfulappl Nov 8, 2022
cf16400
Use walrus operator
colorfulappl Nov 9, 2022
adce0ab
Merge branch 'main' into fix_ac_str_converter_cleanup
colorfulappl Nov 24, 2022
3ae2aea
Rename "post_operations" to "post_parsing"
colorfulappl Nov 24, 2022
c3595e1
Add Argument Clinic functional test cases
colorfulappl Nov 24, 2022
946ad3f
Simplify news
colorfulappl Nov 24, 2022
7767139
Delete unnecessary function doc
colorfulappl Nov 24, 2022
9d08af5
Simplify function doc
colorfulappl Nov 24, 2022
aa218c4
Do not generate redundant NULL check
colorfulappl Nov 24, 2022
485c7aa
Polish comment
colorfulappl Nov 24, 2022
18ae693
Merge branch 'main' into fix_ac_str_converter_cleanup
colorfulappl Nov 24, 2022
aea779f
Rerun make clinic
colorfulappl Nov 24, 2022
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Do not generate redundant NULL check
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@colorfulappl
colorfulappl committed Nov 24, 2022
commit aa218c4638bb929f23ed07d42646b1cee860ebcd
22 changes: 6 additions & 16 deletions Lib/test/clinic.test
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Original file line number Diff line number Diff line change
Expand Up @@ -1741,25 +1741,15 @@ test_str_converter_encoding(PyObject *module, PyObject *const *args, Py_ssize_t
}
return_value = test_str_converter_encoding_impl(module, a, b, c, d, d_length, e, e_length);
/* Post operation for a */
if (a) {
PyMem_FREE(a);
}
PyMem_FREE(a);
/* Post operation for b */
if (b) {
PyMem_FREE(b);
}
PyMem_FREE(b);
/* Post operation for c */
if (c) {
PyMem_FREE(c);
}
PyMem_FREE(c);
/* Post operation for d */
if (d) {
PyMem_FREE(d);
}
PyMem_FREE(d);
/* Post operation for e */
if (e) {
PyMem_FREE(e);
}
PyMem_FREE(e);

exit:
return return_value;
Expand All @@ -1769,7 +1759,7 @@ static PyObject *
test_str_converter_encoding_impl(PyObject *module, char *a, char *b, char *c,
char *d, Py_ssize_t d_length, char *e,
Py_ssize_t e_length)
/*[clinic end generated code: output=5dfef501bb5f5e82 input=eb4c38e1f898f402]*/
/*[clinic end generated code: output=a9f5b30da7f9bfaf input=eb4c38e1f898f402]*/


/*[clinic input]
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22 changes: 6 additions & 16 deletions Modules/clinic/_testclinic.c.h
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2 changes: 1 addition & 1 deletion Tools/clinic/clinic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3440,7 +3440,7 @@ def converter_init(self, *, accept={str}, encoding=None, zeroes=False):
def post_parsing(self):
if self.encoding:
name = self.name
return "".join(["if (", name, ") {\n PyMem_FREE(", name, ");\n}\n"])
return f"PyMem_FREE({name});\n"

def parse_arg(self, argname, displayname):
if self.format_unit == 's':
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0