[Issue 19957] New: Problem debugging associative arrays

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19957

          Issue ID: 19957
           Summary: Problem debugging associative arrays
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: regression
          Priority: P1
         Component: visuald
          Assignee: nobody at puremagic.com
          Reporter: thomas.hedstrom at mail.com

Some array constructs do not work correctly in the debugger.
Mago used
VisualD 0.50.0-beta2
VS2017 15.9.13

1. In the following code, watch on "data" fails in x64 LDC debug.
module main;
import std.stdio;

alias retData = ubyte[uint][2];

int main(string[] argv)
{
    retData b,a;
    b[1][27] = 123;
    a = test();
    writeln(a,b); // break 2
    return 0;
}

retData test()
{
    retData data;
    data[1][27] = 123;
    writeln(data);
    return data; // break 1
}

2. Reducing the type/assignments for: alias retData = ubyte[uint]
This makes "data" watchable, but now "a" no longer works in LDC x64 or x86.

Not sure but I think problem 1 was ok/better in 0.49.
Might be LDC debug info problem but in actual code where I use a more complex
array type, both LDC and DMD x64 have problem but not any x86.

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