[cfe-dev] [libc++] regex parse wrong in libc++.1.dylib (400.9.4)

[Louis Dionne via cfe-dev]

Can you please check your test case with libc++ trunk? I think this may be r340609 (https://reviews.llvm.org/D50534 <https://reviews.llvm.org/D50534>), which has been fixed already.

If it still fails on trunk, please file a bug report on https://bugs.llvm.org <https://bugs.llvm.org/> with a fully self-contained reproduction. It should be a program that can be run out of the box, with a main function and everything.

Louis

> On Sep 3, 2018, at 02:07, 黄奕 via cfe-dev <cfe-dev at lists.llvm.org> wrote:
> 
> System:  MacOs 10.13.6
> LibC++ Version: 400.9.4
> LibSystem : 1252.200.5
> IDE: Xcode 10.0 beta
> 
> 
> ...
> std::regex decode_href() { return std::regex(R"(\[([\s\S]*?)\]\(([\s\S]*?)\))")
> ...
> auto expr = decode_href();
> std::sregex_iterator it(text.cbegin(), text.cend(), expr);
> std::sregex_iterator end;
> for(; it != end; ++it){
>         ...
>  }
> ...
> 
> I found in ver 400.9.4, it could not parse successfully with an input of "[URL](https://www.baidu.com)" <https://www.baidu.com)"/> (text = "[URL](https://www.baidu.com)"). <https://www.baidu.com)")./>
> while it works well in ver 400.9.0.
> I m not sure it is a bug or
> 
> 
> 
>  
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