System information (version)

• OpenCV => recent master
• Operating System / Platform => Raspbian Stretch 9.3 / Raspberry Pi 3
• Compiler => Clang 3.9.1
• Related issue calib3d: some tests fails using clang on Raspberry Pi 3 #11056

Unfortunately, #11056 wasn't solved until Clang 5.0

The issue that complex division ends up in no operation was reported to clang, already.
The fix was included in the trunk on 2017 Jul 27.
After this commit, Clang 5.0 was released.

So, I need to update #11057 to wider compiler version (entire 3.0 and 4.0 series).

Steps to reproduce

• build OpenCV using clang 3.0 or 4.0 series
• run opencv_test_calib3d