I've been getting a LOT of erroneous C4017W warnings after adding a new field to a struct in one of my projects. I researched it, and found out it's a [[http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0496i/BABIBIBH.html|data flow analysis warning related to hardware register use]]. Adding an extra field made my struct //exactly// 4B, which in turn made it a prime candidate for the compiler to store in a register. In other words, the compiler is optimizing my struct, and then complaining about its own optimizations... {{/media/uploads/neilt6/facepalm.jpg}} I propose that the online compiler should suppress this warning since all it does is generate "noise", potentially hiding other legitimate warnings. Apparently the [[http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0496l/dom1374748724515.html|ARM Compiler 5.04 and later suppress it by default]], so even ARM knows it's garbage.

Just resumed work on my project, and the warnings are gone! Thanks guys!

Is it? :-) Cool !