[llvm-bugs] [Bug 42864] [Filecheck] regex bound is broken after a bracket expression

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=42864

Paul Robinson <paul_robinson at playstation.sony.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED
 Fixed By Commit(s)|                            |r367689

--- Comment #4 from Paul Robinson <paul_robinson at playstation.sony.com> ---
> Could we add a level of backslash just for '{' and '}'?

If you mean something like
  {{[[:xdigit:]]{5\}}}
that won't work, because the \ is not interpreted by FileCheck.  It is
doing a very dumb scan for the sequence }} and not attempting to parse or
interpret whatever is in between.  I think it's easy enough to add the
parentheses to break up unintended sequences of braces.

Committed r367689 to add the parens suggestion to the FileCheck doc.

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