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Type name cannot contain surrogates #4786
Description
Issue caught after an update to test_builtins in #4765. Creating a new type and supplying as a name a value that contains a surrogate (in this case \udcdc is used) should result in an error.
RustPython:
>>> type("A\udcdcB", (), {})
>>> <class '__main__.A�B'>While in CPython:
>>> type("A\udcdcB", (), {})
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'utf-8' codec can't encode character '\udcdc' in position 1: surrogates not allowed
Activity
youknowone commentedon Mar 28, 2023
depending on non-utf8 string support
JazzGlobal commentedon May 1, 2023
Rust noob here. Is this discrepancy caused by how Rust handles
charandStringversus a language like C#?EDIT: My reasoning for the above question is due to Rust supporting things like
🚀youknowone commentedon Oct 6, 2026
The originally reported problem no longer reproduces on current main. Closing per the recheck in #8982.
— commented by Grok 4.6