pearu opened a new pull request, #54656: URL: https://github.com/apache/arrow/pull/54656
### Rationale for this change On Windows, the vendored musl `strptime` does not handle `%a`, `%A`, `%b`, `%B`, `%h`, `%c`, `%p`, `%r`, `%x` and `%X`, because they need `nl_langinfo()`, which is not available there. ### What changes are included in this PR? A C-locale replacement for `nl_langinfo()`, restricted to the items the vendored `strptime` uses. Defining `ARROW_TEST_FALLBACK_LANGINFO` compiles the replacement on other platforms as well, for manual testing. ### Are these changes tested? Yes, `TimestampParser.StrptimeLocaleDirectives` covers each of these directives. On Windows it exercises the vendored `strptime`; elsewhere it runs against the system `strptime`. ### Are there any user-facing changes? On Windows, `strptime` formats with these directives now parse. ### AI usage disclosure Developed with AI assistance (Claude Code): the fix, the test and this description were AI-generated under my direction and reviewed line by line by me. I own and can debug these changes. No copyrighted material is included. * GitHub Issue: #54641 -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
