ANAnimats·Dec 28, 2016
Shadowing a variable really ought to be an error. At least, you shouldn't be able to hide a local variable with another local variable. Yes, sometimes you have to write "vv" in the inner loop instead of "v", and not feel as l33t. Deal with it.
(A shadow variable problem in C just turned up in firmware for a surface mount reflow soldering oven I have. The variable name is "avgtemp". This may explain why some ovens scorch PC boards.[1] Read the discussion. Note that none of the people writing about the issue understand that "static" would confine the scope to one file, and that uninitialized variable declarations at top level are global to the whole program. That's probably because they came up from Arduino land, where people are not taught to think about that stuff. Arduino land is really full C++ using gcc, but it's not taught that way.