[Bug libstdc++/116369] New: [DEBUG MODE,C++20] access to iterators from global empty container defined by "const&" results in SIGSEGV

[piotrwn1 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116369

            Bug ID: 116369
           Summary: [DEBUG MODE,C++20] access to iterators from global
                    empty container defined by "const&" results in SIGSEGV
           Product: gcc
           Version: 14.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: piotrwn1 at gmail dot com
  Target Milestone: ---

Starting from C++20 (C++23 too) and gcc14.1, with STL debug mode ON (-std=c++20
-D_GLIBCXX_DEBUG) the following code starts producing SIGSEGV:

    #include <vector>

    const std::vector<int>& a{};
    int main() {
        (void)a.begin();
    }

The obvious workaround, changing to "const std::vector<int> a{};" works.
Also the problem is not visible with local vector, only for globals.
And only visible in GLIBC debug mode.
Not also visible in clang - so maybe this is the gcc compiler issue.

Compiler Explorer link: https://godbolt.org/z/PKnbavGe6