[fpc-devel] FPC_HAS_CONSTREF

[Hans-Peter Diettrich]

Jonas Maebe schrieb:

>> What is "constref",
> 
> A "const" parameter that is always passed by reference.

What's the guarantee, that (in detail external) subroutines will honor 
the "const" attribute?

AFAIK "constref" was invented for passing values to external 
subroutines, that expect a reference. In how far does "constref" affect 
the *caller*, in contrast to e.g. "var"? Can constref pass properties, 
which are not allowed as var parameters?

DoDi