Pierre Sarrazin just released an update to his excellent CMOC C like compiler for the CoCo.
Release notes for 0.1.79:
Floating-point arithmetic using the float type is now supported when targeting the DragonDOS environment.
Added option –add-os9-stack-space, which allows specifying a number of bytes to add to the stack space normally allocated by OS-9.
The compiler now issues a warning when passing a struct or union to printf() or sprintf().
When updating your CoCo-Pi, please make sure to select “Update CoCo-Pi from git repo” and “Run CoCo-Pi fix script” in order for all the changes to be applied.