[llvm-bugs] [Bug 31663] New: Clang's __builtin_hypot is not constexpr but GCC's is.

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=31663

            Bug ID: 31663
           Summary: Clang's __builtin_hypot is not constexpr but GCC's is.
           Product: clang
           Version: trunk
          Hardware: PC
                OS: All
            Status: NEW
          Severity: normal
          Priority: P
         Component: C++
          Assignee: unassignedclangbugs at nondot.org
          Reporter: eric at efcs.ca
                CC: dgregor at apple.com, llvm-bugs at lists.llvm.org
    Classification: Unclassified

Clang's __builtin_hypot should be evaluatable in constant expressions just like
GCC's.

// clang++ -std=c++1z test.cpp
constexpr auto x = __builtin_hypot(1., 1.);

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