CPP breaks multiline string syntax
Summary
When CPP language extension is enabled, multiline strings don't work (as expected).
Steps to reproduce
{-# LANGUAGE CPP #-}
main = putStrLn "hello \
\world"
a.hs:2:41: error:
lexical error in string/character literal at character 'w'
|
2 | main = putStrLn "hello \
| ^
(The caret is misplaced due to #14113.)
Bad Workaround
Extra slash at the end of the dangling part:
{-# LANGUAGE CPP #-}
main = putStrLn "hello \\
\world"
Environment
- GHC version used: 8.6.4