System information (version)

• OpenCV => 3.4.6-pre (Release build)
• Operating System / Platform => Android 6.0 armeabi-v7a
• Compiler => clang NKD 19c and 20 beta3

Steps to reproduce

Calling cv::warpAffine() or cv::warpPerspective() will produce a crash: signal 7 (SIGBUS), code 1 (BUS_ADRALN)

The crash doesn't occur on debug builds or on armv8.

Workaround: build OpenCV with NDK 18b.

See also: #13676