Commit ba086ca7 authored by Ben Gamari's avatar Ben Gamari 🐢

Add testcase for #14251

parent 4e3f6a07
{-# LANGUAGE MagicHash, BangPatterns #-}
module Main where
import GHC.Exts
{-# NOINLINE f #-}
f :: (Int# -> Float# -> Double# -> Float# -> Double# -> String) -> String
f g = g 3# 4.0# 5.0## 6.0# 6.9## ++ " World!"
{-# NOINLINE p #-}
p :: Int# -> Float# -> Double# -> Float# -> Double# -> String
p i j k l m = "Hello"
{-# NOINLINE q #-}
q :: Int# -> Int# -> Float# -> Double# -> Float# -> Double# -> String
q _ i j k l m = "Hello " ++ show (F# l) ++ " " ++ show (D# m)
{-# NOINLINE r #-}
r :: Int# -> Float# -> Double# -> Float# -> Double# -> String
r i = let !(I# z) = length [I# 1# .. I# i] in \j k l m -> p z j k l m
-- ghc won't eta-expand around the length, because it has unknown cost
main = do
putStrLn (f p) -- fast call
putStrLn (f r) -- slow call: function but wrong arity
let g = last [q 1#]
putStrLn (f g) -- slow call: thunk
Hello World!
Hello World!
Hello 6.0 6.9 World!
......@@ -172,3 +172,6 @@ test('T13825-unit',
test('T14619', normal, compile_and_run, [''])
test('T14754', normal, compile_and_run, [''])
test('T14346', only_ways(['threaded1','threaded2']), compile_and_run, ['-O -threaded'])
test('T14251', [extra_ways(['llvm', 'optllvm']),
expect_broken_for(14251, ['optllvm'])],
compile_and_run, [''])
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment