[Issue 24750] New: escaping sliced stack arrays not detected

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24750

          Issue ID: 24750
           Summary: escaping sliced stack arrays not detected
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: bugzilla at digitalmars.com

Jonathan Davis reports:

  int[] foo()
  {
    int[3] arr = [1,2,3];
    return arr[]; // returning `arr[]` escapes a reference to local variable
`arr`
  }

whereas:

  int[] foo()
  {
    int[3] arr = [1,2,3];
    int[] slice = arr[];
    return slice;
 }

compiles without complaint.

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