diff options
Diffstat (limited to 'ext/rtree/rtree.c')
| -rw-r--r-- | ext/rtree/rtree.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/ext/rtree/rtree.c b/ext/rtree/rtree.c index 21c87bdc7..5e9fa6996 100644 --- a/ext/rtree/rtree.c +++ b/ext/rtree/rtree.c @@ -94,6 +94,14 @@ typedef unsigned int u32; # define ALWAYS(X) (X) # define NEVER(X) (X) #endif +#ifndef offsetof +#define offsetof(STRUCTURE,FIELD) ((size_t)((char*)&((STRUCTURE*)0)->FIELD)) +#endif +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) +# define FLEXARRAY +#else +# define FLEXARRAY 1 +#endif #endif /* !defined(SQLITE_AMALGAMATION) */ /* Macro to check for 4-byte alignment. Only used inside of assert() */ @@ -414,9 +422,13 @@ struct RtreeMatchArg { RtreeGeomCallback cb; /* Info about the callback functions */ int nParam; /* Number of parameters to the SQL function */ sqlite3_value **apSqlParam; /* Original SQL parameter values */ - RtreeDValue aParam[1]; /* Values for parameters to the SQL function */ + RtreeDValue aParam[FLEXARRAY]; /* Values for parameters to the SQL function */ }; +/* Size of an RtreeMatchArg object with N parameters */ +#define SZ_RTREEMATCHARG(N) \ + (offsetof(RtreeMatchArg,aParam)+(N)*sizeof(RtreeDValue)) + #ifndef MAX # define MAX(x,y) ((x) < (y) ? (y) : (x)) #endif @@ -4369,8 +4381,7 @@ static void geomCallback(sqlite3_context *ctx, int nArg, sqlite3_value **aArg){ sqlite3_int64 nBlob; int memErr = 0; - nBlob = sizeof(RtreeMatchArg) + (nArg-1)*sizeof(RtreeDValue) - + nArg*sizeof(sqlite3_value*); + nBlob = SZ_RTREEMATCHARG(nArg) + nArg*sizeof(sqlite3_value*); pBlob = (RtreeMatchArg *)sqlite3_malloc64(nBlob); if( !pBlob ){ sqlite3_result_error_nomem(ctx); |