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https://issues.apache.org/jira/browse/GROOVY-8212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul King closed GROOVY-8212.
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> coerce GString to String when used as Map key
> ---------------------------------------------
>
> Key: GROOVY-8212
> URL: https://issues.apache.org/jira/browse/GROOVY-8212
> Project: Groovy
> Issue Type: Bug
> Components: Static compilation, Static Type Checker
> Affects Versions: 2.4.10
> Reporter: Christopher Smith
> Assignee: Eric Milles
> Priority: Minor
> Fix For: 5.0.0-alpha-1
>
>
> When a GString is used as the key for a bracket-style map get (in this case,
> from an overly verbose CSV file):
> {code}
> row["$param URL"]
> {code}
> the {{GStringImpl}} object is passed directly to {{Map#get(Object)}}. Since
> GStrings are never equal to Strings, this means that the get will always
> return null.
> If {{row}} is explicitly declared as a {{Map<String,?>}}, however, Groovy
> ought to identify the intended behavior (using a templated string as a map
> key) and use the string value instead.
> The current behavior is a problem because even in static compilation mode,
> where the generic key bound is known, Groovy does not complain about the use
> of a GString here (because it normally treats GStrings as valid for
> {{String}} targets?), but the lookup will fail at runtime.
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