id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
1463	Illegal instructions on MS Visual Studio 2015 Update 3	ksuehring		"When encoding/decoding with a release build on MS Visual Studio 2015 Update 3, an ""Illegal Instruction Error"" is produced in ""partialButterflyInverse32"".

This looks like a problem with the optimizer of Visual Studio's C++ compiler. The debug version works fine.

The bug could be reported to MS, but it should probably be reduced to a very simple example code that could easily be analyzed by the developers (if possible).

The current suggested solution is to use a different compiler as a workaround and wait for the next VS update. There seems to be at least one existing bug report for VS referring to ""illegal instructions"""	defect	new	minor		HM	HM-16.14		illegal instruction, transform, inverse	ksuehring davidf karlsharman jct-vc@…