[Bug libstdc++/77469] std::regex x("[b\\-a]") throws with message "Invalid range in bracket expression."

[alban...@baker-research.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77469

--- Comment #3 from alban...@baker-research.com ---
Created attachment 39545
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39545&action=edit
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