Bug 233994
| Summary: | boost::regex match but not std::regex | ||||||||
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| Product: | Base System | Reporter: | georg-bsd | ||||||
| Component: | bin | Assignee: | freebsd-bugs (Nobody) <bugs> | ||||||
| Status: | New --- | ||||||||
| Severity: | Affects Only Me | CC: | cem | ||||||
| Priority: | --- | ||||||||
| Version: | 11.2-RELEASE | ||||||||
| Hardware: | amd64 | ||||||||
| OS: | Any | ||||||||
| Attachments: |
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Expected output: "All ok" Got Output: "Bug triggered" What makes you believe this is a locale or even libc++ problem? I don't see how any of the regular expressions are even locale dependent.
I also cannot reproduce the problem without boost, neither on CURRENT nor 11. (I.e., using 'std::locale::global(std::locale("de_DE.UTF-8"));' to override the user's locale instead of the boost goop.)
I don't have boost installed, so I can't explore that avenue, but I am having trouble even understanding how this program would fail.
I think it might be a bug in libc++ because on Windows(MSVC 2013 & MSVC 2017) and on Linux (gcc 8.2 + libstdc++) this regex (from std) matches with the global locale from boost. Also the regex from boost matches (replace std::regex by boost::regex). Do you think the other implementations are wrong? This bug triggers only (also on my box and only on freebsd with clang and libc++) when i use boost::locale. As you said, with std::locale() it matches. When i comment the locale out, and use the std locale, the regex matches. I also don't understand why this regex is locale dependent and why it fails with the locale set from boost::locale. Seems like it might be a Boost bug to me. Created attachment 200200 [details]
Simplified testcase
Reduced testcase
For reference: Boost::locale issue https://github.com/boostorg/locale/issues/35 (I am waiting for a new account on llvm bug tracker). Bug on LLVM Bugtracker: https://bugs.llvm.org/show_bug.cgi?id=40052 |
Created attachment 200092 [details] Testcase I got the attached program. It has a global locale set (de_DE.UTF-8). Under Windows and Linux the regexes match. Under FreeBSD and clang the regex doesnt match. It seems related to the set locale. If i switch to boost::regex, my application works.