Parse Error: missing closing bracket points to wrong location

Given this Haskell code in *temp.hs*:

```haskell
x :: [Char
x = 1
```

GHC error message is:

```console
$ ghc temp.hs
[1 of 2] Compiling Main ( temp.hs, temp.o )
temp.hs:2:1: error: [GHC-58481]
parse error (possibly incorrect indentation or mismatched brackets)
|
2 | x = 1
| ^
```

The error points to the start of the type definition line `x = 1`, which misleads us into thinking it's a line indentation issue.
It should instead point to the end of the previous (type definition) line `x :: [Char` and say that a closing square bracket `]` was expected.

This would make the error message much better and help in debugging.

Reproduce the diagnostic with the Haskell code in temp.hs and the ghc command shown. Trace how the parser reports the missing bracket and compare the reported location and message with the issue's expected end-of-line location and missing ] wording; done means the diagnostic points to the incomplete type definition rather than x = 1.

Written by the indexing model from the issue text.