From: Daniel Micay > Sent: 10 March 2018 23:45 > > > Just wondering. Is this actually a VLA. FFT_NUM_SAMPLES was static const so > > not really going to show a lot of variation. This array will always have the > > same size on the stack. > > The issue is that unlike in C++, a `static const` can't be used in a > constant expression in C. It's unclear why C is defined that way but > it's how it is and there isn't currently a GCC extension making more > things into constant expressions like C++.
'static' and 'const' are both just qualifiers to a 'variable' You can still take it's address. The language allows you to cast away the 'const' and write to the variable - the effect is probably 'implementation defined'. It is probably required to be valid for 'static const' items to be patchable. David