[Issue 19534] New: Wrong error message "only one index allowed to index int"

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19534

          Issue ID: 19534
           Summary: Wrong error message "only one index allowed to index
                    int"
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: minor
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: dkorpel at live.nl

```
auto a = [0, 100, 200][0, 1];
auto b = 200[0];
```

Yields:

Error: only one index allowed to index int[]
Error: only one index allowed to index int

The top error makes sense, but the bottom one does not: you can't index an int
at all, but the error suggests I should use one index (which I already do).

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