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Avoid out-of-bounds index access #2630

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Avoid out-of-bounds index access #2630

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2 changes: 1 addition & 1 deletion ghcide/src/Development/IDE/Plugin/Completions/Logic.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -732,7 +732,7 @@ isUsedAsInfix line prefixMod prefixText pos

openingBacktick :: T.Text -> T.Text -> T.Text -> Position -> Bool
openingBacktick line prefixModule prefixText Position { _character=(fromIntegral -> c) }
| backtickIndex < 0 || backtickIndex > T.length line = False
| backtickIndex < 0 || backtickIndex >= T.length line = False
| otherwise = (line `T.index` backtickIndex) == '`'
where
backtickIndex :: Int
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