http://d.puremagic.com/issues/show_bug.cgi?id=3646
Koroskin Denis <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |[email protected] --- Comment #1 from Koroskin Denis <[email protected]> 2009-12-25 08:32:32 PST --- This is a bit more tricky than it looks like. The question here is, how many times should foo be instanciated? DMD answers "just 1 time", and I agree with it, since bar and bam have same signature and mangling. Having only one instantiation means that code for it will also be generated once. When you call a function that has default argument without providing that argument, the call is actually *rewritten to include that argument*. I.e. bar(); is rewritten as bar(22); Not lets see how foo!(bar) looks like after a rewrite: void foo(Fn)(Fn fn) { fn(22); } Now there is no wonder why dmd behaves like this. But this only happens if foo!(bar) is instanciated before foo!(bam), because when templates are instantiates on first use. When you instanciate foo!(bam) first, it doesn't get rewritten and therefore fails to compile. I guess the only fix for this issue would be to create an implicit trampoline to invoke functions with default arguments, but only Walter can say for sure. -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
