diff options
Diffstat (limited to 'rts/include/rts/Constants.h')
| -rw-r--r-- | rts/include/rts/Constants.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/rts/include/rts/Constants.h b/rts/include/rts/Constants.h index 3bf5a7a2d5..e18a2c7bb9 100644 --- a/rts/include/rts/Constants.h +++ b/rts/include/rts/Constants.h @@ -215,6 +215,21 @@ #define LDV_STATE_USE 0x40000000 #endif /* SIZEOF_VOID_P */ +/* See Note [Debugging predicates for pointers] in ClosureMacros.h */ +#if !defined(INVALID_GHC_POINTER) +#if !defined(DEBUG) +#define INVALID_GHC_POINTER 0x0 +#elif SIZEOF_VOID_P== 4 +/* N.B. this may result in false-negatives from LOOKS_LIKE_PTR on some + * platforms since this is a valid user-space address. + */ +#define INVALID_GHC_POINTER 0xaaaaaaaa +#else +/* N.B. this is typically a kernel-mode address on 64-bit platforms */ +#define INVALID_GHC_POINTER 0xaaaaaaaaaaaaaaaa +#endif +#endif + /* ----------------------------------------------------------------------------- TSO related constants -------------------------------------------------------------------------- */ |