diff options
Diffstat (limited to 'libraries/base/GHC/Stable.hs')
| -rw-r--r-- | libraries/base/GHC/Stable.hs | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libraries/base/GHC/Stable.hs b/libraries/base/GHC/Stable.hs index fd4534133c..4c8123e07c 100644 --- a/libraries/base/GHC/Stable.hs +++ b/libraries/base/GHC/Stable.hs @@ -44,6 +44,8 @@ garbage collection (ordinary references may be relocated during garbage collection). Consequently, stable pointers can be passed to foreign code, which can treat it as an opaque reference to a Haskell value. +The @StablePtr@ 0 is reserved for representing NULL in foreign code. + A value of type @StablePtr a@ is a stable pointer to a Haskell expression of type @a@. -} |