[Issue 16629] New: [Reg 2.072] scope is stripped from some parameters

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16629

          Issue ID: 16629
           Summary: [Reg 2.072] scope is stripped from some parameters
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: code at dawg.eu

cat > bug.d << CODE
import std.traits;

struct T
{
    void method1(scope int* foo){}
    void method2(scope int foo){}
}

static assert(ParameterStorageClassTuple!(T.method1)[0] ==
ParameterStorageClass.scope_);
static assert(ParameterStorageClassTuple!(T.method2)[0] ==
ParameterStorageClass.scope_);
CODE
dmd -c bug
----
bug.d(10): Error: static assert  (0u == cast(ParameterStorageClass)1u) is false
----

The scope storage class is ignored for some parameters (value parameters) and
no longer present in the tuple returned by `is(typeof(func) PR ==
__parameters)`.
Should at least be part of the changelog.

https://github.com/dlang/dmd/pull/5897

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