[llvm-bugs] [Bug 44250] New: missing-noreturn and constexpr-if

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=44250

            Bug ID: 44250
           Summary: missing-noreturn and constexpr-if
           Product: clang
           Version: 9.0
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: rianquinn at gmail.com
                CC: htmldeveloper at gmail.com, llvm-bugs at lists.llvm.org,
                    neeilans at live.com, richard-llvm at metafoo.co.uk

Clang says that this function should be labelled as noreturn which is not true
when the constexpr is false. Since we do not have conditional noreturn
statements, and noreturn is not part of the function's signature, this is a
false positive. 

    static auto
    fail_fast() noexcept -> void
    {
        if constexpr (!autosar_compliant) {
            if constexpr (details::autosar::exit_instead_of_abort) {
                std::exit(EXIT_FAILURE);    //NOSONAR
            }

            std::abort();    //NOSONAR
        }
    }

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