[Issue 24489] New: GC array allocations during CTFE in -betterC mode is unnecessarily restricted now

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24489

          Issue ID: 24489
           Summary: GC array allocations during CTFE in -betterC mode is
                    unnecessarily restricted now
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: regression
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: kipthemudkip at yahoo.com

Prior to LDC 1.36.0 (DMD 2.106.1), the following code would compile just fine
with -betterC switched on:

static immutable thing = () {
    int[] result = new int[](3);
    return result;
}();

Now in LDC 1.37.0 (DMD 2.107.1), I get:

Error: expression `new int[](3LU)` allocates with the GC and cannot be used
with switch `-betterC`

I have a feeling the issue is commit 0eb4ea8c48af9c439928b7470b5ecd6c55e3793d
from pull request #15982, the fix for issue 24295.

Thanks!

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