bearophile wrote:
But I don't understand how a __format_string annotation helps here.
If you have code like this:
string f = "%d";
writeln(f, 10);
Adding that annotation (here translated to a D annotation) doesn't help the
compiler much:
@format_string string f = "%d";
writeln(f, 10);
There's a bug there, the code needs to be:
@format_string string f = "%d";
writefln(f, 10);
In most cases you don't want to print a format string, so if you write:
@format_string string f = "%d";
writeln(f, 10);
The compiler is probably able to show a warning, that says that you are using a
format string as first argument of a printing function that doesn't use a
format string :-) And this warning is enough to catch that bug.
Won't implement, see rationale
http://d.puremagic.com/issues/show_bug.cgi?id=4458#c6
