https://issues.dlang.org/show_bug.cgi?id=17330
Issue ID: 17330
Summary: [REG 2.072] BigInt's constructor used to be pure
Product: D
Version: D2
Hardware: All
OS: All
Status: NEW
Severity: regression
Priority: P1
Component: phobos
Assignee: [email protected]
Reporter: [email protected]
Found by Russel Winder who posted to D.learn:
http://forum.dlang.org/post/[email protected]
This used to work, and it should be made to work again:
----
void main()
{
import std.bigint: BigInt;
auto b = immutable BigInt("123");
}
----
Fails compilation since 2.072.0. Regression was introduced by
<https://github.com/dlang/phobos/pull/3876>.
The issue is that purity cannot be inferred for the constructor. It used to be
explicitly marked `pure` when it wasn't a template.
I've previously filed this as a compiler bug, thinking that a templated
constructor should infer `pure`. That issue has been closed as WONTFIX. See
issue 17309.
I'm not sure if this can be fixed satisfactorily. So this may end up as WONTFIX
as well. But that would be quite disappointing.
--
