diff options
Diffstat (limited to 'libraries/base/Data/IORef.hs')
| -rw-r--r-- | libraries/base/Data/IORef.hs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libraries/base/Data/IORef.hs b/libraries/base/Data/IORef.hs index 44769268cf..2886e594d3 100644 --- a/libraries/base/Data/IORef.hs +++ b/libraries/base/Data/IORef.hs @@ -49,7 +49,7 @@ mkWeakIORef r@(IORef (STRef r#)) (IO finalizer) = IO $ \s -> -- |Mutate the contents of an 'IORef'. -- -- Be warned that 'modifyIORef' does not apply the function strictly. This --- means if the program calls 'modifyIORef' many times, but seldomly uses the +-- means if the program calls 'modifyIORef' many times, but seldom uses the -- value, thunks will pile up in memory resulting in a space leak. This is a -- common mistake made when using an IORef as a counter. For example, the -- following will likely produce a stack overflow: |