[llvm-bugs] [Bug 26269] Quick sort return false result

[via llvm-bugs]

https://llvm.org/bugs/show_bug.cgi?id=26269

Richard Smith <richard-llvm at metafoo.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |richard-llvm at metafoo.co.uk
         Resolution|---                         |INVALID

--- Comment #1 from Richard Smith <richard-llvm at metafoo.co.uk> ---
polar_angle_cmp is not a strict weak order. For instance, polar_angle_cmp(orig,
orig) returns true. (Your use of 'pd' would also stop this from being a strict
weak order, but the problem case doesn't arise in your testcase because 'pd' is
never passed a number whose absolute value is less than Eps and nonzero).

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