Lazy expression evaluation doesn't check parent scope for deprecations

[dlangBugzillaToGithub]

Seb reported this on 2019-04-04T11:13:49Z

Transferred from https://issues.dlang.org/show_bug.cgi?id=19789

Description

The following shouldn't trigger any deprecation messages as we're inside a deprecated AST branch, but lazy doesn't seem to check its parent scope:

---
deprecated struct Foo { int i;}

void bar(T)(lazy T e) { e(); }

deprecated void main()
{
    bar(Foo(42));
}
---

[dlangBugzillaToGithub]

dlang-bot commented on 2019-04-04T11:17:32Z

@wilzbach updated dlang/druntime pull request #1982 "Make deprecation warnings compile errors" mentioning this issue:

- Workaround Issue 19789: add a copy of _assertThrown

https://github.com/dlang/druntime/pull/1982

[dlangBugzillaToGithub]

dlang-bot commented on 2019-04-08T08:10:42Z

dlang/druntime pull request #1982 "Make deprecation warnings compile errors" was merged into master:

- 9b706b935f5f234ffa7fb95334066ab47dc1527c by Sebastian Wilzbach:
  Workaround Issue 19789: add a copy of _assertThrown

https://github.com/dlang/druntime/pull/1982