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From: "camilotalero96 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/102918] New: Undefined behaviour in regex header
 (uininitialized boolean)
Date: Sun, 24 Oct 2021 21:39:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102918

            Bug ID: 102918
           Summary: Undefined behaviour in regex header (uininitialized
                    boolean)
           Product: gcc
           Version: 11.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: camilotalero96 at hotmail dot com
  Target Milestone: ---

I am using undefined behaviour sanitizers and they are detecting a potential
bug in teh regex header, the specific report is:

`/usr/include/c++/11/bits/regex.h:909:15: runtime error: load of value 192,
which is not a valid value for type 'bool'`

Which does seem like the use of a potentially uninitialized boolean.=