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The testsuite output now contains diagnostic codes, so many tests need
to be updated at once.
We decided it was best to keep the diagnostic codes in the testsuite
output, so that contributors don't inadvertently make changes to the
diagnostic codes.
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When quoting (using a TH single or double quote) a built-in
name such as the list constructor (:), we didn't always check
that the resulting 'Name' was in the correct namespace.
This patch adds a check in GHC.Rename.Splice to ensure
we get a Name that is in the term-level/type-level namespace,
when using a single/double tick, respectively.
Fixes #20884.
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This fixes an error message regression.
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Before this patch, referring to a data constructor in a term-level
context led to a scoping error:
ghci> id Int
<interactive>:1:4: error: Data constructor not in scope: Int
After this patch, the renamer falls back to the type namespace
and successfully finds the Int. It is then rejected in the type
checker with a more useful error message:
<interactive>:1:4: error:
• Illegal term-level use of the type constructor ‘Int’
imported from ‘Prelude’ (and originally defined in ‘GHC.Types’)
• In the first argument of ‘id’, namely ‘Int’
In the expression: id Int
We also do this for type variables.
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The patch "Treat out-of-scope variables as holes" makes
lots of error messages change a bit. This patch has all
the change.
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This matches GCC's choice of Unicode quotation marks (i.e. U+2018 and U+2019)
and therefore looks more familiar on the console. This addresses #2507.
Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
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