Return of void functions inconsiste​ncy between CVI 2013 and older

Question

Hello,
I have discovered an inconsistency using CVI 2013 (SP2 or not) compared to CVI 2010 and CVI 8.5 (the versions I have).
I have written, by mistake, a code where I'm returning a value for a void function. CVI 2013 does not complain (but should) while other CVI versions complain (and that's OK).
Here is the code:
static void pouet(void)
return;
static void hop(void)
return pouet();
int main(void)
hop();
return 0;
Could this behaviour be fixed for the next CVI update ?
Thanks.
Frédéric Lochon.

Answer 1

Well it's technically not causing wrong behaviour, but may cause less than best performance depending on the compiler code generation as the register usually used for function return values might be assigned some garbage value that never will get used though.
Causing an error is likely a bit strict, issueing a warning would be the prefered behaviour, not generating either a warning or error is a bit lazy. Problematic would be if you could write this without getting an error:
static void pouet(void)
return;
static int hop(void)
return pouet();
int main(void)
hop();
return 0;
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions