I was writing some unittests when I ran across some rather unexpected behavior
in which strings in an array were being trimmed to the length of the first
element. Running this program:
import std.stdio;
void main() {
auto strings = ["hello", "cruelly", "innovative", "world"];
writefln(strings);
}
produces this:
[[h,e,l,l,o],[c,r,u,e,l],[i,n,n,o,v],[w,o,r,l,d]]
as the compiler decides to make the strings variable an array of char[5u]. The
problem is easily avoided by replacing auto with string[], but the problem
caught me off guard while working in the one place where I regularly use auto:
unittests.
Is there a reason that the compiler makes the assumptions it does or is this a
bug? I did try searching the bugzilla with a few different queries, but failed
to turn up anything that looked likely.