diff options
Diffstat (limited to 'src/sqliteInt.h')
| -rw-r--r-- | src/sqliteInt.h | 61 |
1 files changed, 51 insertions, 10 deletions
diff --git a/src/sqliteInt.h b/src/sqliteInt.h index 034f98690..35e5b94d7 100644 --- a/src/sqliteInt.h +++ b/src/sqliteInt.h @@ -765,7 +765,17 @@ ** ourselves. */ #ifndef offsetof -#define offsetof(STRUCTURE,FIELD) ((int)((char*)&((STRUCTURE*)0)->FIELD)) +#define offsetof(STRUCTURE,FIELD) ((size_t)((char*)&((STRUCTURE*)0)->FIELD)) +#endif + +/* +** Work around C99 "flex-array" syntax for pre-C99 compilers, so as +** to avoid complaints from -fsanitize=strict-bounds. +*/ +#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) +# define FLEXARRAY +#else +# define FLEXARRAY 1 #endif /* @@ -2577,9 +2587,13 @@ struct FKey { struct sColMap { /* Mapping of columns in pFrom to columns in zTo */ int iFrom; /* Index of column in pFrom */ char *zCol; /* Name of column in zTo. If NULL use PRIMARY KEY */ - } aCol[1]; /* One entry for each of nCol columns */ + } aCol[FLEXARRAY]; /* One entry for each of nCol columns */ }; +/* The size (in bytes) of an FKey object holding N columns. The answer +** does NOT include space to hold the zTo name. */ +#define SZ_FKEY(N) (offsetof(FKey,aCol)+(N)*sizeof(struct sColMap)) + /* ** SQLite supports many different ways to resolve a constraint ** error. ROLLBACK processing means that a constraint violation @@ -2641,9 +2655,12 @@ struct KeyInfo { u16 nAllField; /* Total columns, including key plus others */ sqlite3 *db; /* The database connection */ u8 *aSortFlags; /* Sort order for each column. */ - CollSeq *aColl[1]; /* Collating sequence for each term of the key */ + CollSeq *aColl[FLEXARRAY]; /* Collating sequence for each term of the key */ }; +/* The size (in bytes) of a KeyInfo object with up to N fields */ +#define SZ_KEYINFO(N) (offsetof(KeyInfo,aColl) + (N)*sizeof(CollSeq*)) + /* ** Allowed bit values for entries in the KeyInfo.aSortFlags[] array. */ @@ -3216,9 +3233,14 @@ struct ExprList { int iConstExprReg; /* Register in which Expr value is cached. Used only ** by Parse.pConstExpr */ } u; - } a[1]; /* One slot for each expression in the list */ + } a[FLEXARRAY]; /* One slot for each expression in the list */ }; +/* The size (in bytes) of an ExprList object that is big enough to hold +** as many as N expressions. */ +#define SZ_EXPRLIST(N) \ + (offsetof(ExprList,a) + (N)*sizeof(struct ExprList_item)) + /* ** Allowed values for Expr.a.eEName */ @@ -3246,9 +3268,12 @@ struct IdList { int nId; /* Number of identifiers on the list */ struct IdList_item { char *zName; /* Name of the identifier */ - } a[1]; + } a[FLEXARRAY]; }; +/* The size (in bytes) of an IdList object that can hold up to N IDs. */ +#define SZ_IDLIST(N) (offsetof(IdList,a)+(N)*sizeof(struct IdList_item)) + /* ** Allowed values for IdList.eType, which determines which value of the a.u4 ** is valid. @@ -3368,11 +3393,19 @@ struct OnOrUsing { ** */ struct SrcList { - int nSrc; /* Number of tables or subqueries in the FROM clause */ - u32 nAlloc; /* Number of entries allocated in a[] below */ - SrcItem a[1]; /* One entry for each identifier on the list */ + int nSrc; /* Number of tables or subqueries in the FROM clause */ + u32 nAlloc; /* Number of entries allocated in a[] below */ + SrcItem a[FLEXARRAY]; /* One entry for each identifier on the list */ }; +/* Size (in bytes) of a SrcList object that can hold as many as N +** SrcItem objects. */ +#define SZ_SRCLIST(N) (offsetof(SrcList,a)+(N)*sizeof(SrcItem)) + +/* Size (in bytes( of a SrcList object that holds 1 SrcItem. This is a +** special case of SZ_SRCITEM(1) that comes up often. */ +#define SZ_SRCLIST_1 (offsetof(SrcList,a)+sizeof(SrcItem)) + /* ** Permitted values of the SrcList.a.jointype field */ @@ -4436,9 +4469,13 @@ struct With { int nCte; /* Number of CTEs in the WITH clause */ int bView; /* Belongs to the outermost Select of a view */ With *pOuter; /* Containing WITH clause, or NULL */ - Cte a[1]; /* For each CTE in the WITH clause.... */ + Cte a[FLEXARRAY]; /* For each CTE in the WITH clause.... */ }; +/* The size (in bytes) of a With object that can hold as many +** as N different CTEs. */ +#define SZ_WITH(N) (offsetof(With,a) + (N)*sizeof(Cte)) + /* ** The Cte object is not guaranteed to persist for the entire duration ** of code generation. (The query flattener or other parser tree @@ -4467,9 +4504,13 @@ struct DbClientData { DbClientData *pNext; /* Next in a linked list */ void *pData; /* The data */ void (*xDestructor)(void*); /* Destructor. Might be NULL */ - char zName[1]; /* Name of this client data. MUST BE LAST */ + char zName[FLEXARRAY]; /* Name of this client data. MUST BE LAST */ }; +/* The size (in bytes) of a DbClientData object that can has a name +** that is N bytes long, including the zero-terminator. */ +#define SZ_DBCLIENTDATA(N) (offsetof(DbClientData,zName)+(N)) + #ifdef SQLITE_DEBUG /* ** An instance of the TreeView object is used for printing the content of |