Comment # 2 on bug 143 from art.08.09@gmail.com

(In reply to Iain Buclaw from comment #1)
> Can not reproduce on current master.  I get:
> 
> bug143.d:3: error: template instance f!(function ()
> {
> g("f(A)");
> }
> ) does not match template declaration (null)

I only ran into this while reducing another testcase, so I don't have a better
example. Note that it crashes _only_ when that string literal contains "%s" (or
'%' followed by other chars), it seems that it tries to interpret it as a
format string.
If the output you got was from the original unmodified testcase then the error
message is bogus - there's no "f(A)" string there. (That 'null' would also be
an issue; IIRC I've seen that here too, while trying to figure out what was
triggering the crash)