Well, with all respect to your work, I wouldn't call that an adequate proof of nonexistence of bugs in the given compiler.

1) I state I have found ZERO bugs in full fledged Keil compiler/linker, after, at least, a decade of use. does that, in any way, state "there are no bugs"? Does that state "this is a good product and bugs are unlikely" you be the judge.

2) Neil said check the Keil fourms for compiler bugs. Most are answered by RTFM, No That is the way C works, or Post you code. let me add: in the Raisonance forum every other such post is answered "will be fixed in next release" so where is the difference, you judge for yourself if a half price product is half as good.

As far as being 'cheap'. There is nothing 'cheap' abut being frugal and using a low cost/free compiler. There is A LOT about being cheap in using the (lack of0 performance of a low cost/free compiler to reject the usefulness of a premium product. If you use a low cost/free compiler, accept what you are doing, do not use that as an argument "all compilers introduce bugs".

One last word about Keil: in my opinion they should scrap the IDE, it can not do what I need, then am I a typical customer?. maybe the majority of users just lovws the IDE. Do I concerne myself with the quality of the IDE, of coiurse not. repeat the above re the simulator, repeat the above re the editor.

Now, what does concern me is the quality of the compiler/assembler/linker and I have found ZERO bugs in that area, after, at least, a decade of use.

Erik