Ok, the first part with constant sized elements is done. Now, more complex ones.

Looks like we have PyOS_snprintf instead of just snprintf 🤔

Almost done!

There are a couple left, but I don't quite understand the code and I will highly appreciate help / advice on these cases:

• cpython/Modules/_ctypes/_ctypes.c

  Lines 2642 to 2651 in 5839575

  	cp += sprintf(cp, "%x", Py_SAFE_DOWNCAST(index, Py_ssize_t, int));
  	while (target->b_base) {
  	bytes_left = sizeof(string) - (cp - string) - 1;
  	/* Hex format needs 2 characters per byte */
  	if (bytes_left < sizeof(Py_ssize_t) * 2) {
  	PyErr_SetString(PyExc_ValueError,
  	"ctypes object structure too deep");
  	return NULL;
  	}
  	cp += sprintf(cp, ":%x", Py_SAFE_DOWNCAST(target->b_index, Py_ssize_t, int));

• cpython/Objects/unicodeobject.c

  Line 736 in 5839575

  size = sprintf(str, "&#%d;", PyUnicode_READ(kind, data, i));

• cpython/Parser/string_parser.c

  Line 121 in 5839575

  sprintf(p, "\\U%08x", chr);

• cpython/Python/pystrtod.c

  Line 1242 in 5839575

  exp_len = sprintf(p, "%+.02d", exp);

🤖 New build scheduled with the buildbot fleet by @sobolevn for commit 9bc0864 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.

🤖 New build scheduled with the buildbot fleet by @sobolevn for commit c7dd348 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.

CI results:

• buildbot/PPC64 Fedora PR failed with some unrelated problem. Proof: https://buildbot.python.org/all/#/builders/256/builds/1014 (finished 2 days ago)
• Refleaks are going to be fixed by Refleak in test_importlib on aarch64 RHEL8 #101766 and Refleak after new OrderedDict repr #101747 They are not directly related. I will wait for gh-101747: Fix refleak in new OrderedDict repr #101748 to get merged, so I get much cleaner results in this PR

🤖 New build scheduled with the buildbot fleet by @sobolevn for commit 0e7bce1 🤖

If you want to schedule another build, you need to add the :hammer: test-with-buildbots label again.

@Yhg1s @gvanrossum it is ready to be reviewed :)

I've made the requested changes, thanks for the suggestions 👍