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| author | Tavian Barnes <tavianator@gmail.com> | 2011-06-12 02:37:51 -0600 |
|---|---|---|
| committer | Tavian Barnes <tavianator@gmail.com> | 2011-06-13 00:16:06 -0600 |
| commit | 7acd8ea6673b7a90ed4041408ccf1b024b8a007a (patch) | |
| tree | d52199dd7c58e0217bfd1a74e7601d739ad333f5 /libdimension/dimension/refcount.h | |
| parent | 066261810c2fca192677c5c1c01c91d6ecec65a0 (diff) | |
| download | dimension-7acd8ea6673b7a90ed4041408ccf1b024b8a007a.tar.xz | |
Vast libdimension API and internals improvements.
Couldn't really do these while I was trying to be POV-Ray compatible,
'cause they would've broken compatibility.
Diffstat (limited to 'libdimension/dimension/refcount.h')
| -rw-r--r-- | libdimension/dimension/refcount.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/libdimension/dimension/refcount.h b/libdimension/dimension/refcount.h index 4431cbc..be437a8 100644 --- a/libdimension/dimension/refcount.h +++ b/libdimension/dimension/refcount.h @@ -32,7 +32,7 @@ typedef unsigned int dmnsn_refcount; * Increment a reference count. * @param[in,out] object The reference-counted object to acquire. */ -#define DMNSN_INCREF(obj) ((void)++(obj)->refcount) +#define DMNSN_INCREF(obj) ((void)((obj) && ++(obj)->refcount)) /** * @internal @@ -40,4 +40,5 @@ typedef unsigned int dmnsn_refcount; * @param[in,out] object The reference-counted object to release. * @return Whether the object is now garbage. */ -#define DMNSN_DECREF(obj) ((obj)->refcount == 0 || --(obj)->refcount == 0) +#define DMNSN_DECREF(obj) \ + ((obj) && ((obj)->refcount == 0 || --(obj)->refcount == 0)) |