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Use FLEXIBLE_ARRAY_MEMBER in a bunch more places.

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Replace some bogus "x[1]" declarations with "x[FLEXIBLE_ARRAY_MEMBER]".
Aside from being more self-documenting, this should help prevent bogus
warnings from static code analyzers and perhaps compiler misoptimizations.

This patch is just a down payment on eliminating the whole problem, but
it gets rid of a lot of easy-to-fix cases.

Note that the main problem with doing this is that one must no longer rely
on computing sizeof(the containing struct), since the result would be
compiler-dependent.  Instead use offsetof(struct, lastfield).  Autoconf
also warns against spelling that offsetof(struct, lastfield[0]).

Michael Paquier, review and additional fixes by me.
This commit is contained in:
Tom Lane 2015-02-20 00:11:42 -05:00
parent 2fb7a75f37
commit 09d8d110a6
44 changed files with 109 additions and 127 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
contrib/cube/cubedata.h
View File

@ -23,11 +23,10 @@ typedef struct NDBOX
unsigned int header;
/*
* Variable length array. The lower left coordinates for each dimension
* come first, followed by upper right coordinates unless the point flag
* is set.
* The lower left coordinates for each dimension come first, followed by
* upper right coordinates unless the point flag is set.
*/
double x[1];
double x[FLEXIBLE_ARRAY_MEMBER];
} NDBOX;
#define POINT_BIT 0x80000000
@ -41,9 +40,9 @@ typedef struct NDBOX
#define LL_COORD(cube, i) ( (cube)->x[i] )
#define UR_COORD(cube, i) ( IS_POINT(cube) ? (cube)->x[i] : (cube)->x[(i) + DIM(cube)] )
#define POINT_SIZE(_dim) (offsetof(NDBOX, x[0]) + sizeof(double)*(_dim))
#define CUBE_SIZE(_dim) (offsetof(NDBOX, x[0]) + sizeof(double)*(_dim)*2)
#define POINT_SIZE(_dim) (offsetof(NDBOX, x) + sizeof(double)*(_dim))
#define CUBE_SIZE(_dim) (offsetof(NDBOX, x) + sizeof(double)*(_dim)*2)
#define DatumGetNDBOX(x) ((NDBOX*)DatumGetPointer(x))
#define PG_GETARG_NDBOX(x) DatumGetNDBOX( PG_DETOAST_DATUM(PG_GETARG_DATUM(x)) )
#define DatumGetNDBOX(x) ((NDBOX *) PG_DETOAST_DATUM(x))
#define PG_GETARG_NDBOX(x) DatumGetNDBOX(PG_GETARG_DATUM(x))
#define PG_RETURN_NDBOX(x) PG_RETURN_POINTER(x)

4
contrib/intarray/_int.h
View File

@ -73,7 +73,7 @@ typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
int32 flag;
char data[1];
char data[FLEXIBLE_ARRAY_MEMBER];
} GISTTYPE;
#define ALLISTRUE 0x04
@ -133,7 +133,7 @@ typedef struct QUERYTYPE
{
int32 vl_len_; /* varlena header (do not touch directly!) */
int32 size; /* number of ITEMs */
ITEM items[1]; /* variable length array */
ITEM items[FLEXIBLE_ARRAY_MEMBER];
} QUERYTYPE;
#define HDRSIZEQT offsetof(QUERYTYPE, items)

14
contrib/ltree/ltree.h
View File

@ -10,7 +10,7 @@
typedef struct
{
uint16 len;
char name[1];
char name[FLEXIBLE_ARRAY_MEMBER];
} ltree_level;
#define LEVEL_HDRSIZE (offsetof(ltree_level,name))
@ -20,7 +20,7 @@ typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
uint16 numlevel;
char data[1];
char data[FLEXIBLE_ARRAY_MEMBER];
} ltree;
#define LTREE_HDRSIZE MAXALIGN( offsetof(ltree, data) )
@ -34,7 +34,7 @@ typedef struct
int32 val;
uint16 len;
uint8 flag;
char name[1];
char name[FLEXIBLE_ARRAY_MEMBER];
} lquery_variant;
#define LVAR_HDRSIZE MAXALIGN(offsetof(lquery_variant, name))
@ -51,7 +51,7 @@ typedef struct
uint16 numvar;
uint16 low;
uint16 high;
char variants[1];
char variants[FLEXIBLE_ARRAY_MEMBER];
} lquery_level;
#define LQL_HDRSIZE MAXALIGN( offsetof(lquery_level,variants) )
@ -72,7 +72,7 @@ typedef struct
uint16 numlevel;
uint16 firstgood;
uint16 flag;
char data[1];
char data[FLEXIBLE_ARRAY_MEMBER];
} lquery;
#define LQUERY_HDRSIZE MAXALIGN( offsetof(lquery, data) )
@ -107,7 +107,7 @@ typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
int32 size;
char data[1];
char data[FLEXIBLE_ARRAY_MEMBER];
} ltxtquery;
#define HDRSIZEQT MAXALIGN(VARHDRSZ + sizeof(int32))
@ -208,7 +208,7 @@ typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
uint32 flag;
char data[1];
char data[FLEXIBLE_ARRAY_MEMBER];
} ltree_gist;
#define LTG_ONENODE 0x01

2
contrib/pageinspect/rawpage.c
View File

@ -192,7 +192,7 @@ page_header(PG_FUNCTION_ARGS)
* Check that enough data was supplied, so that we don't try to access
* fields outside the supplied buffer.
*/
if (raw_page_size < sizeof(PageHeaderData))
if (raw_page_size < SizeOfPageHeaderData)
ereport(ERROR,
(errcode(ERRCODE_INVALID_PARAMETER_VALUE),
errmsg("input page too small (%d bytes)", raw_page_size)));

2
contrib/pg_trgm/trgm.h
View File

@ -63,7 +63,7 @@ typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
uint8 flag;
char data[1];
char data[FLEXIBLE_ARRAY_MEMBER];
} TRGM;
#define TRGMHDRSIZE (VARHDRSZ + sizeof(uint8))

13
src/backend/catalog/namespace.c
View File

@ -261,9 +261,9 @@ RangeVarGetRelidExtended(const RangeVar *relation, LOCKMODE lockmode,
* with the answer changing under them, or that they already hold some
* appropriate lock, and therefore return the first answer we get without
* checking for invalidation messages. Also, if the requested lock is
* already held, LockRelationOid will not AcceptInvalidationMessages,
* so we may fail to notice a change. We could protect against that case
* by calling AcceptInvalidationMessages() before beginning this loop, but
* already held, LockRelationOid will not AcceptInvalidationMessages, so
* we may fail to notice a change. We could protect against that case by
* calling AcceptInvalidationMessages() before beginning this loop, but
* that would add a significant amount overhead, so for now we don't.
*/
for (;;)
@ -1075,8 +1075,8 @@ FuncnameGetCandidates(List *names, int nargs, List *argnames,
*/
effective_nargs = Max(pronargs, nargs);
newResult = (FuncCandidateList)
palloc(sizeof(struct _FuncCandidateList) - sizeof(Oid)
+ effective_nargs * sizeof(Oid));
palloc(offsetof(struct _FuncCandidateList, args) +
effective_nargs * sizeof(Oid));
newResult->pathpos = pathpos;
newResult->oid = HeapTupleGetOid(proctup);
newResult->nargs = effective_nargs;
@ -1597,7 +1597,8 @@ OpernameGetCandidates(List *names, char oprkind, bool missing_schema_ok)
* separate palloc for each operator, but profiling revealed that the
* pallocs used an unreasonably large fraction of parsing time.
*/
#define SPACE_PER_OP MAXALIGN(sizeof(struct _FuncCandidateList) + sizeof(Oid))
#define SPACE_PER_OP MAXALIGN(offsetof(struct _FuncCandidateList, args) + \
2 * sizeof(Oid))
if (catlist->n_members > 0)
resultSpace = palloc(catlist->n_members * SPACE_PER_OP);

5
src/backend/commands/prepare.c
View File

@ -383,10 +383,9 @@ EvaluateParams(PreparedStatement *pstmt, List *params,
/* Prepare the expressions for execution */
exprstates = (List *) ExecPrepareExpr((Expr *) params, estate);
/* sizeof(ParamListInfoData) includes the first array element */
paramLI = (ParamListInfo)
palloc(sizeof(ParamListInfoData) +
(num_params - 1) * sizeof(ParamExternData));
palloc(offsetof(ParamListInfoData, params) +
num_params * sizeof(ParamExternData));
/* we have static list of params, so no hooks needed */
paramLI->paramFetch = NULL;
paramLI->paramFetchArg = NULL;

6
src/backend/executor/functions.c
View File

@ -896,9 +896,9 @@ postquel_sub_params(SQLFunctionCachePtr fcache,
if (fcache->paramLI == NULL)
{
/* sizeof(ParamListInfoData) includes the first array element */
paramLI = (ParamListInfo) palloc(sizeof(ParamListInfoData) +
(nargs - 1) * sizeof(ParamExternData));
paramLI = (ParamListInfo)
palloc(offsetof(ParamListInfoData, params) +
nargs * sizeof(ParamExternData));
/* we have static list of params, so no hooks needed */
paramLI->paramFetch = NULL;
paramLI->paramFetchArg = NULL;

5
src/backend/executor/spi.c
View File

@ -2290,9 +2290,8 @@ _SPI_convert_params(int nargs, Oid *argtypes,
{
int i;
/* sizeof(ParamListInfoData) includes the first array element */
paramLI = (ParamListInfo) palloc(sizeof(ParamListInfoData) +
(nargs - 1) * sizeof(ParamExternData));
paramLI = (ParamListInfo) palloc(offsetof(ParamListInfoData, params) +
nargs * sizeof(ParamExternData));
/* we have static list of params, so no hooks needed */
paramLI->paramFetch = NULL;
paramLI->paramFetchArg = NULL;

5
src/backend/nodes/params.c
View File

@ -40,9 +40,8 @@ copyParamList(ParamListInfo from)
if (from == NULL || from->numParams <= 0)
return NULL;
/* sizeof(ParamListInfoData) includes the first array element */
size = sizeof(ParamListInfoData) +
(from->numParams - 1) * sizeof(ParamExternData);
size = offsetof(ParamListInfoData, params) +
from->numParams * sizeof(ParamExternData);
retval = (ParamListInfo) palloc(size);
retval->paramFetch = NULL;

4
src/backend/postmaster/syslogger.c
View File

@ -785,13 +785,13 @@ process_pipe_input(char *logbuffer, int *bytes_in_logbuffer)
int dest = LOG_DESTINATION_STDERR;
/* While we have enough for a header, process data... */
while (count >= (int) sizeof(PipeProtoHeader))
while (count >= (int) (offsetof(PipeProtoHeader, data) +1))
{
PipeProtoHeader p;
int chunklen;
/* Do we have a valid header? */
memcpy(&p, cursor, sizeof(PipeProtoHeader));
memcpy(&p, cursor, offsetof(PipeProtoHeader, data));
if (p.nuls[0] == '\0' && p.nuls[1] == '\0' &&
p.len > 0 && p.len <= PIPE_MAX_PAYLOAD &&
p.pid != 0 &&

5
src/backend/tcop/postgres.c
View File

@ -1619,9 +1619,8 @@ exec_bind_message(StringInfo input_message)
{
int paramno;
/* sizeof(ParamListInfoData) includes the first array element */
params = (ParamListInfo) palloc(sizeof(ParamListInfoData) +
(numParams - 1) * sizeof(ParamExternData));
params = (ParamListInfo) palloc(offsetof(ParamListInfoData, params) +
numParams * sizeof(ParamExternData));
/* we have static list of params, so no hooks needed */
params->paramFetch = NULL;
params->paramFetchArg = NULL;

22
src/backend/utils/adt/geo_ops.c
View File

@ -1390,7 +1390,7 @@ path_in(PG_FUNCTION_ARGS)
}
base_size = sizeof(path->p[0]) * npts;
size = offsetof(PATH, p[0]) +base_size;
size = offsetof(PATH, p) +base_size;
/* Check for integer overflow */
if (base_size / npts != sizeof(path->p[0]) || size <= base_size)
@ -1443,12 +1443,12 @@ path_recv(PG_FUNCTION_ARGS)
closed = pq_getmsgbyte(buf);
npts = pq_getmsgint(buf, sizeof(int32));
if (npts <= 0 || npts >= (int32) ((INT_MAX - offsetof(PATH, p[0])) / sizeof(Point)))
if (npts <= 0 || npts >= (int32) ((INT_MAX - offsetof(PATH, p)) / sizeof(Point)))
ereport(ERROR,
(errcode(ERRCODE_INVALID_BINARY_REPRESENTATION),
errmsg("invalid number of points in external \"path\" value")));
size = offsetof(PATH, p[0]) +sizeof(path->p[0]) * npts;
size = offsetof(PATH, p) +sizeof(path->p[0]) * npts;
path = (PATH *) palloc(size);
SET_VARSIZE(path, size);
@ -3476,7 +3476,7 @@ poly_in(PG_FUNCTION_ARGS)
errmsg("invalid input syntax for type polygon: \"%s\"", str)));
base_size = sizeof(poly->p[0]) * npts;
size = offsetof(POLYGON, p[0]) +base_size;
size = offsetof(POLYGON, p) +base_size;
/* Check for integer overflow */
if (base_size / npts != sizeof(poly->p[0]) || size <= base_size)
@ -3530,12 +3530,12 @@ poly_recv(PG_FUNCTION_ARGS)
int size;
npts = pq_getmsgint(buf, sizeof(int32));
if (npts <= 0 || npts >= (int32) ((INT_MAX - offsetof(POLYGON, p[0])) / sizeof(Point)))
if (npts <= 0 || npts >= (int32) ((INT_MAX - offsetof(POLYGON, p)) / sizeof(Point)))
ereport(ERROR,
(errcode(ERRCODE_INVALID_BINARY_REPRESENTATION),
errmsg("invalid number of points in external \"polygon\" value")));
size = offsetof(POLYGON, p[0]) +sizeof(poly->p[0]) * npts;
size = offsetof(POLYGON, p) +sizeof(poly->p[0]) * npts;
poly = (POLYGON *) palloc0(size); /* zero any holes */
SET_VARSIZE(poly, size);
@ -4251,7 +4251,7 @@ path_add(PG_FUNCTION_ARGS)
PG_RETURN_NULL();
base_size = sizeof(p1->p[0]) * (p1->npts + p2->npts);
size = offsetof(PATH, p[0]) +base_size;
size = offsetof(PATH, p) +base_size;
/* Check for integer overflow */
if (base_size / sizeof(p1->p[0]) != (p1->npts + p2->npts) ||
@ -4393,7 +4393,7 @@ path_poly(PG_FUNCTION_ARGS)
* Never overflows: the old size fit in MaxAllocSize, and the new size is
* just a small constant larger.
*/
size = offsetof(POLYGON, p[0]) +sizeof(poly->p[0]) * path->npts;
size = offsetof(POLYGON, p) +sizeof(poly->p[0]) * path->npts;
poly = (POLYGON *) palloc(size);
SET_VARSIZE(poly, size);
@ -4468,7 +4468,7 @@ box_poly(PG_FUNCTION_ARGS)
int size;
/* map four corners of the box to a polygon */
size = offsetof(POLYGON, p[0]) +sizeof(poly->p[0]) * 4;
size = offsetof(POLYGON, p) +sizeof(poly->p[0]) * 4;
poly = (POLYGON *) palloc(size);
SET_VARSIZE(poly, size);
@ -4502,7 +4502,7 @@ poly_path(PG_FUNCTION_ARGS)
* Never overflows: the old size fit in MaxAllocSize, and the new size is
* smaller by a small constant.
*/
size = offsetof(PATH, p[0]) +sizeof(path->p[0]) * poly->npts;
size = offsetof(PATH, p) +sizeof(path->p[0]) * poly->npts;
path = (PATH *) palloc(size);
SET_VARSIZE(path, size);
@ -5181,7 +5181,7 @@ circle_poly(PG_FUNCTION_ARGS)
errmsg("must request at least 2 points")));
base_size = sizeof(poly->p[0]) * npts;
size = offsetof(POLYGON, p[0]) +base_size;
size = offsetof(POLYGON, p) +base_size;
/* Check for integer overflow */
if (base_size / npts != sizeof(poly->p[0]) || size <= base_size)

2
src/backend/utils/cache/catcache.c vendored
View File

@ -1590,7 +1590,7 @@ SearchCatCacheList(CatCache *cache,
oldcxt = MemoryContextSwitchTo(CacheMemoryContext);
nmembers = list_length(ctlist);
cl = (CatCList *)
palloc(sizeof(CatCList) + nmembers * sizeof(CatCTup *));
palloc(offsetof(CatCList, members) +nmembers * sizeof(CatCTup *));
heap_copytuple_with_tuple(ntp, &cl->tuple);
MemoryContextSwitchTo(oldcxt);
heap_freetuple(ntp);

3
src/bin/pg_dump/dumputils.c
View File

@ -1216,9 +1216,8 @@ simple_string_list_append(SimpleStringList *list, const char *val)
{
SimpleStringListCell *cell;
/* this calculation correctly accounts for the null trailing byte */
cell = (SimpleStringListCell *)
pg_malloc(sizeof(SimpleStringListCell) + strlen(val));
pg_malloc(offsetof(SimpleStringListCell, val) +strlen(val) + 1);
cell->next = NULL;
strcpy(cell->val, val);

2
src/bin/pg_dump/dumputils.h
View File

@ -38,7 +38,7 @@ typedef struct SimpleOidList
typedef struct SimpleStringListCell
{
struct SimpleStringListCell *next;
char val[1]; /* VARIABLE LENGTH FIELD */
char val[FLEXIBLE_ARRAY_MEMBER]; /* null-terminated string here */
} SimpleStringListCell;
typedef struct SimpleStringList

4
src/include/access/gin_private.h
View File

@ -322,7 +322,7 @@ typedef struct GinOptions
{
int32 vl_len_; /* varlena header (do not touch directly!) */
bool useFastUpdate; /* use fast updates? */
int pendingListCleanupSize; /* maximum size of pending list */
int pendingListCleanupSize; /* maximum size of pending list */
} GinOptions;
#define GIN_DEFAULT_USE_FASTUPDATE true
@ -389,7 +389,7 @@ typedef struct
{
ItemPointerData first; /* first item in this posting list (unpacked) */
uint16 nbytes; /* number of bytes that follow */
unsigned char bytes[1]; /* varbyte encoded items (variable length) */
unsigned char bytes[FLEXIBLE_ARRAY_MEMBER]; /* varbyte encoded items */
} GinPostingList;
#define SizeOfGinPostingList(plist) (offsetof(GinPostingList, bytes) + SHORTALIGN((plist)->nbytes) )

7
src/include/access/gist_private.h
View File

@ -47,7 +47,7 @@ typedef struct
{
BlockNumber prev;
uint32 freespace;
char tupledata[1];
char tupledata[FLEXIBLE_ARRAY_MEMBER];
} GISTNodeBufferPage;
#define BUFFER_PAGE_DATA_OFFSET MAXALIGN(offsetof(GISTNodeBufferPage, tupledata))
@ -131,7 +131,8 @@ typedef struct GISTSearchItem
/* we must store parentlsn to detect whether a split occurred */
GISTSearchHeapItem heap; /* heap info, if heap tuple */
} data;
double distances[1]; /* array with numberOfOrderBys entries */
double distances[FLEXIBLE_ARRAY_MEMBER]; /* numberOfOrderBys
* entries */
} GISTSearchItem;
#define GISTSearchItemIsHeap(item) ((item).blkno == InvalidBlockNumber)
@ -144,7 +145,7 @@ typedef struct GISTSearchItem
typedef struct GISTScanOpaqueData
{
GISTSTATE *giststate; /* index information, see above */
pairingheap *queue; /* queue of unvisited items */
pairingheap *queue; /* queue of unvisited items */
MemoryContext queueCxt; /* context holding the queue */
bool qual_ok; /* false if qual can never be satisfied */
bool firstCall; /* true until first gistgettuple call */

2
src/include/access/heapam_xlog.h
View File

@ -132,7 +132,7 @@ typedef struct xl_heap_multi_insert
{
uint8 flags;
uint16 ntuples;
OffsetNumber offsets[1];
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} xl_heap_multi_insert;
#define SizeOfHeapMultiInsert offsetof(xl_heap_multi_insert, offsets)

10
src/include/access/spgist_private.h
View File

@ -426,7 +426,7 @@ typedef struct spgxlogMoveLeafs
* the dead tuple from the source
*----------
*/
OffsetNumber offsets[1];
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogMoveLeafs;
#define SizeOfSpgxlogMoveLeafs offsetof(spgxlogMoveLeafs, offsets)
@ -534,7 +534,7 @@ typedef struct spgxlogPickSplit
* list of leaf tuples, length nInsert (unaligned!)
*----------
*/
OffsetNumber offsets[1];
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogPickSplit;
#define SizeOfSpgxlogPickSplit offsetof(spgxlogPickSplit, offsets)
@ -558,7 +558,7 @@ typedef struct spgxlogVacuumLeaf
* tuple numbers to insert in nextOffset links
*----------
*/
OffsetNumber offsets[1];
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumLeaf;
#define SizeOfSpgxlogVacuumLeaf offsetof(spgxlogVacuumLeaf, offsets)
@ -571,7 +571,7 @@ typedef struct spgxlogVacuumRoot
spgxlogState stateSrc;
/* offsets of tuples to delete follow */
OffsetNumber offsets[1];
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumRoot;
#define SizeOfSpgxlogVacuumRoot offsetof(spgxlogVacuumRoot, offsets)
@ -583,7 +583,7 @@ typedef struct spgxlogVacuumRedirect
TransactionId newestRedirectXid; /* newest XID of removed redirects */
/* offsets of redirect tuples to make placeholders follow */
OffsetNumber offsets[1];
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} spgxlogVacuumRedirect;
#define SizeOfSpgxlogVacuumRedirect offsetof(spgxlogVacuumRedirect, offsets)

8
src/include/access/xact.h
View File

@ -118,7 +118,7 @@ typedef struct xl_xact_assignment
{
TransactionId xtop; /* assigned XID's top-level XID */
int nsubxacts; /* number of subtransaction XIDs */
TransactionId xsub[1]; /* assigned subxids */
TransactionId xsub[FLEXIBLE_ARRAY_MEMBER]; /* assigned subxids */
} xl_xact_assignment;
#define MinSizeOfXactAssignment offsetof(xl_xact_assignment, xsub)
@ -128,7 +128,7 @@ typedef struct xl_xact_commit_compact
TimestampTz xact_time; /* time of commit */
int nsubxacts; /* number of subtransaction XIDs */
/* ARRAY OF COMMITTED SUBTRANSACTION XIDs FOLLOWS */
TransactionId subxacts[1]; /* VARIABLE LENGTH ARRAY */
TransactionId subxacts[FLEXIBLE_ARRAY_MEMBER];
} xl_xact_commit_compact;
#define MinSizeOfXactCommitCompact offsetof(xl_xact_commit_compact, subxacts)
@ -143,7 +143,7 @@ typedef struct xl_xact_commit
Oid dbId; /* MyDatabaseId */
Oid tsId; /* MyDatabaseTableSpace */
/* Array of RelFileNode(s) to drop at commit */
RelFileNode xnodes[1]; /* VARIABLE LENGTH ARRAY */
RelFileNode xnodes[FLEXIBLE_ARRAY_MEMBER];
/* ARRAY OF COMMITTED SUBTRANSACTION XIDs FOLLOWS */
/* ARRAY OF SHARED INVALIDATION MESSAGES FOLLOWS */
} xl_xact_commit;
@ -171,7 +171,7 @@ typedef struct xl_xact_abort
int nrels; /* number of RelFileNodes */
int nsubxacts; /* number of subtransaction XIDs */
/* Array of RelFileNode(s) to drop at abort */
RelFileNode xnodes[1]; /* VARIABLE LENGTH ARRAY */
RelFileNode xnodes[FLEXIBLE_ARRAY_MEMBER];
/* ARRAY OF ABORTED SUBTRANSACTION XIDs FOLLOWS */
} xl_xact_abort;

8
src/include/c.h
View File

@ -424,8 +424,8 @@ typedef struct
Oid elemtype;
int dim1;
int lbound1;
int16 values[1]; /* VARIABLE LENGTH ARRAY */
} int2vector; /* VARIABLE LENGTH STRUCT */
int16 values[FLEXIBLE_ARRAY_MEMBER];
} int2vector;
typedef struct
{
@ -435,8 +435,8 @@ typedef struct
Oid elemtype;
int dim1;
int lbound1;
Oid values[1]; /* VARIABLE LENGTH ARRAY */
} oidvector; /* VARIABLE LENGTH STRUCT */
Oid values[FLEXIBLE_ARRAY_MEMBER];
} oidvector;
/*
* Representation of a Name: effectively just a C string, but null-padded to

4
src/include/catalog/namespace.h
View File

@ -34,8 +34,8 @@ typedef struct _FuncCandidateList
int nvargs; /* number of args to become variadic array */
int ndargs; /* number of defaulted args */
int *argnumbers; /* args' positional indexes, if named call */
Oid args[1]; /* arg types --- VARIABLE LENGTH ARRAY */
} *FuncCandidateList; /* VARIABLE LENGTH STRUCT */
Oid args[FLEXIBLE_ARRAY_MEMBER]; /* arg types */
} *FuncCandidateList;
/*
* Structure for xxxOverrideSearchPath functions

15
src/include/commands/dbcommands.h
View File

@ -22,21 +22,6 @@
#define XLOG_DBASE_CREATE 0x00
#define XLOG_DBASE_DROP 0x10
typedef struct xl_dbase_create_rec_old
{
/* Records copying of a single subdirectory incl. contents */
Oid db_id;
char src_path[1]; /* VARIABLE LENGTH STRING */
/* dst_path follows src_path */
} xl_dbase_create_rec_old;
typedef struct xl_dbase_drop_rec_old
{
/* Records dropping of a single subdirectory incl. contents */
Oid db_id;
char dir_path[1]; /* VARIABLE LENGTH STRING */
} xl_dbase_drop_rec_old;
typedef struct xl_dbase_create_rec
{
/* Records copying of a single subdirectory incl. contents */

2
src/include/commands/tablespace.h
View File

@ -25,7 +25,7 @@
typedef struct xl_tblspc_create_rec
{
Oid ts_id;
char ts_path[1]; /* VARIABLE LENGTH STRING */
char ts_path[FLEXIBLE_ARRAY_MEMBER]; /* null-terminated string */
} xl_tblspc_create_rec;
typedef struct xl_tblspc_drop_rec

2
src/include/executor/hashjoin.h
View File

@ -114,7 +114,7 @@ typedef struct HashMemoryChunkData
struct HashMemoryChunkData *next; /* pointer to the next chunk (linked list) */
char data[1]; /* buffer allocated at the end */
char data[FLEXIBLE_ARRAY_MEMBER]; /* buffer allocated at the end */
} HashMemoryChunkData;
typedef struct HashMemoryChunkData *HashMemoryChunk;

4
src/include/nodes/bitmapset.h
View File

@ -32,8 +32,8 @@ typedef int32 signedbitmapword; /* must be the matching signed type */
typedef struct Bitmapset
{
int nwords; /* number of words in array */
bitmapword words[1]; /* really [nwords] */
} Bitmapset; /* VARIABLE LENGTH STRUCT */
bitmapword words[FLEXIBLE_ARRAY_MEMBER]; /* really [nwords] */
} Bitmapset;
/* result of bms_subset_compare */

2
src/include/nodes/params.h
View File

@ -71,7 +71,7 @@ typedef struct ParamListInfoData
ParserSetupHook parserSetup; /* parser setup hook */
void *parserSetupArg;
int numParams; /* number of ParamExternDatas following */
ParamExternData params[1]; /* VARIABLE LENGTH ARRAY */
ParamExternData params[FLEXIBLE_ARRAY_MEMBER];
} ParamListInfoData;

4
src/include/nodes/tidbitmap.h
View File

@ -41,8 +41,8 @@ typedef struct
int ntuples; /* -1 indicates lossy result */
bool recheck; /* should the tuples be rechecked? */
/* Note: recheck is always true if ntuples < 0 */
OffsetNumber offsets[1]; /* VARIABLE LENGTH ARRAY */
} TBMIterateResult; /* VARIABLE LENGTH STRUCT */
OffsetNumber offsets[FLEXIBLE_ARRAY_MEMBER];
} TBMIterateResult;
/* function prototypes in nodes/tidbitmap.c */

8
src/include/postgres.h
View File

@ -117,20 +117,20 @@ typedef union
struct /* Normal varlena (4-byte length) */
{
uint32 va_header;
char va_data[1];
char va_data[FLEXIBLE_ARRAY_MEMBER];
} va_4byte;
struct /* Compressed-in-line format */
{
uint32 va_header;
uint32 va_rawsize; /* Original data size (excludes header) */
char va_data[1]; /* Compressed data */
char va_data[FLEXIBLE_ARRAY_MEMBER]; /* Compressed data */
} va_compressed;
} varattrib_4b;
typedef struct
{
uint8 va_header;
char va_data[1]; /* Data begins here */
char va_data[FLEXIBLE_ARRAY_MEMBER]; /* Data begins here */
} varattrib_1b;
/* TOAST pointers are a subset of varattrib_1b with an identifying tag byte */
@ -138,7 +138,7 @@ typedef struct
{
uint8 va_header; /* Always 0x80 or 0x01 */
uint8 va_tag; /* Type of datum */
char va_data[1]; /* Data (of the type indicated by va_tag) */
char va_data[FLEXIBLE_ARRAY_MEMBER]; /* Type-specific data */
} varattrib_1b_e;
/*

2
src/include/postmaster/syslogger.h
View File

@ -48,7 +48,7 @@ typedef struct
int32 pid; /* writer's pid */
char is_last; /* last chunk of message? 't' or 'f' ('T' or
* 'F' for CSV case) */
char data[1]; /* data payload starts here */
char data[FLEXIBLE_ARRAY_MEMBER]; /* data payload starts here */
} PipeProtoHeader;
typedef union

4
src/include/replication/walsender_private.h
View File

@ -54,7 +54,7 @@ typedef struct WalSnd
* Pointer to the walsender's latch. Used by backends to wake up this
* walsender when it has work to do. NULL if the walsender isn't active.
*/
Latch *latch;
Latch *latch;
/*
* The priority order of the standby managed by this WALSender, as listed
@ -88,7 +88,7 @@ typedef struct
*/
bool sync_standbys_defined;
WalSnd walsnds[1]; /* VARIABLE LENGTH ARRAY */
WalSnd walsnds[FLEXIBLE_ARRAY_MEMBER];
} WalSndCtlData;
extern WalSndCtlData *WalSndCtl;

2
src/include/storage/bufpage.h
View File

@ -156,7 +156,7 @@ typedef struct PageHeaderData
LocationIndex pd_special; /* offset to start of special space */
uint16 pd_pagesize_version;
TransactionId pd_prune_xid; /* oldest prunable XID, or zero if none */
ItemIdData pd_linp[1]; /* beginning of line pointer array */
ItemIdData pd_linp[FLEXIBLE_ARRAY_MEMBER]; /* line pointer array */
} PageHeaderData;
typedef PageHeaderData *PageHeader;

2
src/include/storage/fsm_internals.h
View File

@ -39,7 +39,7 @@ typedef struct
* NonLeafNodesPerPage elements are upper nodes, and the following
* LeafNodesPerPage elements are leaf nodes. Unused nodes are zero.
*/
uint8 fp_nodes[1];
uint8 fp_nodes[FLEXIBLE_ARRAY_MEMBER];
} FSMPageData;
typedef FSMPageData *FSMPage;

4
src/include/storage/standby.h
View File

@ -60,7 +60,7 @@ extern void StandbyReleaseOldLocks(int nxids, TransactionId *xids);
typedef struct xl_standby_locks
{
int nlocks; /* number of entries in locks array */
xl_standby_lock locks[1]; /* VARIABLE LENGTH ARRAY */
xl_standby_lock locks[FLEXIBLE_ARRAY_MEMBER];
} xl_standby_locks;
/*
@ -75,7 +75,7 @@ typedef struct xl_running_xacts
TransactionId oldestRunningXid; /* *not* oldestXmin */
TransactionId latestCompletedXid; /* so we can set xmax */
TransactionId xids[1]; /* VARIABLE LENGTH ARRAY */
TransactionId xids[FLEXIBLE_ARRAY_MEMBER];
} xl_running_xacts;
#define MinSizeOfXactRunningXacts offsetof(xl_running_xacts, xids)

2
src/include/tsearch/dicts/regis.h
View File

@ -21,7 +21,7 @@ typedef struct RegisNode
len:16,
unused:14;
struct RegisNode *next;
unsigned char data[1];
unsigned char data[FLEXIBLE_ARRAY_MEMBER];
} RegisNode;
#define RNHDRSZ (offsetof(RegisNode,data))

6
src/include/tsearch/dicts/spell.h
View File

@ -49,7 +49,7 @@ typedef struct
typedef struct SPNode
{
uint32 length;
SPNodeData data[1];
SPNodeData data[FLEXIBLE_ARRAY_MEMBER];
} SPNode;
#define SPNHDRSZ (offsetof(SPNode,data))
@ -70,7 +70,7 @@ typedef struct spell_struct
int len;
} d;
} p;
char word[1]; /* variable length, null-terminated */
char word[FLEXIBLE_ARRAY_MEMBER];
} SPELL;
#define SPELLHDRSZ (offsetof(SPELL, word))
@ -120,7 +120,7 @@ typedef struct AffixNode
{
uint32 isvoid:1,
length:31;
AffixNodeData data[1];
AffixNodeData data[FLEXIBLE_ARRAY_MEMBER];
} AffixNode;
#define ANHRDSZ (offsetof(AffixNode, data))

6
src/include/tsearch/ts_type.h
View File

@ -63,7 +63,7 @@ typedef uint16 WordEntryPos;
typedef struct
{
uint16 npos;
WordEntryPos pos[1]; /* variable length */
WordEntryPos pos[FLEXIBLE_ARRAY_MEMBER];
} WordEntryPosVector;
@ -82,7 +82,7 @@ typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
int32 size;
WordEntry entries[1]; /* variable length */
WordEntry entries[FLEXIBLE_ARRAY_MEMBER];
/* lexemes follow the entries[] array */
} TSVectorData;
@ -233,7 +233,7 @@ typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
int32 size; /* number of QueryItems */
char data[1]; /* data starts here */
char data[FLEXIBLE_ARRAY_MEMBER]; /* data starts here */
} TSQueryData;
typedef TSQueryData *TSQuery;

4
src/include/utils/catcache.h
View File

@ -147,8 +147,8 @@ typedef struct catclist
uint32 hash_value; /* hash value for lookup keys */
HeapTupleData tuple; /* header for tuple holding keys */
int n_members; /* number of member tuples */
CatCTup *members[1]; /* members --- VARIABLE LENGTH ARRAY */
} CatCList; /* VARIABLE LENGTH STRUCT */
CatCTup *members[FLEXIBLE_ARRAY_MEMBER]; /* members */
} CatCList;
typedef struct catcacheheader

4
src/include/utils/datetime.h
View File

@ -219,7 +219,7 @@ typedef struct TimeZoneAbbrevTable
{
Size tblsize; /* size in bytes of TimeZoneAbbrevTable */
int numabbrevs; /* number of entries in abbrevs[] array */
datetkn abbrevs[1]; /* VARIABLE LENGTH ARRAY */
datetkn abbrevs[FLEXIBLE_ARRAY_MEMBER];
/* DynamicZoneAbbrev(s) may follow the abbrevs[] array */
} TimeZoneAbbrevTable;
@ -227,7 +227,7 @@ typedef struct TimeZoneAbbrevTable
typedef struct DynamicZoneAbbrev
{
pg_tz *tz; /* NULL if not yet looked up */
char zone[1]; /* zone name (var length, NUL-terminated) */
char zone[FLEXIBLE_ARRAY_MEMBER]; /* NUL-terminated zone name */
} DynamicZoneAbbrev;

4
src/include/utils/geo_decls.h
View File

@ -80,7 +80,7 @@ typedef struct
int32 npts;
int32 closed; /* is this a closed polygon? */
int32 dummy; /* padding to make it double align */
Point p[1]; /* variable length array of POINTs */
Point p[FLEXIBLE_ARRAY_MEMBER];
} PATH;
@ -115,7 +115,7 @@ typedef struct
int32 vl_len_; /* varlena header (do not touch directly!) */
int32 npts;
BOX boundbox;
Point p[1]; /* variable length array of POINTs */
Point p[FLEXIBLE_ARRAY_MEMBER];
} POLYGON;
/*---------------------------------------------------------------------

2
src/include/utils/jsonb.h
View File

@ -194,7 +194,7 @@ typedef struct JsonbContainer
{
uint32 header; /* number of elements or key/value pairs, and
* flags */
JEntry children[1]; /* variable length */
JEntry children[FLEXIBLE_ARRAY_MEMBER];
/* the data for each child node follows. */
} JsonbContainer;

2
src/include/utils/relmapper.h
View File

@ -29,7 +29,7 @@ typedef struct xl_relmap_update
Oid dbid; /* database ID, or 0 for shared map */
Oid tsid; /* database's tablespace, or pg_global */
int32 nbytes; /* size of relmap data */
char data[1]; /* VARIABLE LENGTH ARRAY */
char data[FLEXIBLE_ARRAY_MEMBER];
} xl_relmap_update;
#define MinSizeOfRelmapUpdate offsetof(xl_relmap_update, data)

3
src/include/utils/varbit.h
View File

@ -26,7 +26,8 @@ typedef struct
{
int32 vl_len_; /* varlena header (do not touch directly!) */
int32 bit_len; /* number of valid bits */
bits8 bit_dat[1]; /* bit string, most sig. byte first */
bits8 bit_dat[FLEXIBLE_ARRAY_MEMBER]; /* bit string, most sig. byte
* first */
} VarBit;
/*