sharpetronics/PostgreSQL
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-01 00:01:20 -04:00
Code Issues Projects Releases Wiki Activity

Fix statically allocated struct with FLEXIBLE_ARRAY_MEMBER member.

Browse Source 
clang complains about this, not unreasonably, so define another struct
that's explicitly for a WordEntryPos with exactly one element.

While at it, get rid of pretty dubious use of a static variable for
more than one purpose --- if it were being treated as const maybe
I'd be okay with this, but it isn't.
This commit is contained in:
Tom Lane 2015-02-20 17:50:18 -05:00
parent 33a3b03d63
commit 33b2a2c97f
2 changed files with 24 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
src/backend/utils/adt/tsrank.c
View File

@ -195,16 +195,12 @@ SortAndUniqItems(TSQuery q, int *size)
return res;
}
/* A dummy WordEntryPos array to use when haspos is false */
static WordEntryPosVector POSNULL = {
1, /* Number of elements that follow */
{0}
};
static float
calc_rank_and(const float *w, TSVector t, TSQuery q)
{
WordEntryPosVector **pos;
WordEntryPosVector1 posnull;
WordEntryPosVector *POSNULL;
int i,
k,
l,
@ -228,7 +224,12 @@ calc_rank_and(const float *w, TSVector t, TSQuery q)
return calc_rank_or(w, t, q);
}
pos = (WordEntryPosVector **) palloc0(sizeof(WordEntryPosVector *) * q->size);
WEP_SETPOS(POSNULL.pos[0], MAXENTRYPOS - 1);
/* A dummy WordEntryPos array to use when haspos is false */
posnull.npos = 1;
posnull.pos[0] = 0;
WEP_SETPOS(posnull.pos[0], MAXENTRYPOS - 1);
POSNULL = (WordEntryPosVector *) &posnull;
for (i = 0; i < size; i++)
{
@ -241,7 +242,7 @@ calc_rank_and(const float *w, TSVector t, TSQuery q)
if (entry->haspos)
pos[i] = _POSVECPTR(t, entry);
else
pos[i] = &POSNULL;
pos[i] = POSNULL;
dimt = pos[i]->npos;
post = pos[i]->pos;
@ -256,7 +257,7 @@ calc_rank_and(const float *w, TSVector t, TSQuery q)
for (p = 0; p < lenct; p++)
{
dist = Abs((int) WEP_GETPOS(post[l]) - (int) WEP_GETPOS(ct[p]));
if (dist || (dist == 0 && (pos[i] == &POSNULL || pos[k] == &POSNULL)))
if (dist || (dist == 0 && (pos[i] == POSNULL || pos[k] == POSNULL)))
{
float curw;
@ -282,6 +283,7 @@ calc_rank_or(const float *w, TSVector t, TSQuery q)
{
WordEntry *entry,
*firstentry;
WordEntryPosVector1 posnull;
WordEntryPos *post;
int32 dimt,
j,
@ -291,6 +293,10 @@ calc_rank_or(const float *w, TSVector t, TSQuery q)
QueryOperand **item;
int size = q->size;
/* A dummy WordEntryPos array to use when haspos is false */
posnull.npos = 1;
posnull.pos[0] = 0;
item = SortAndUniqItems(q, &size);
for (i = 0; i < size; i++)
@ -312,8 +318,8 @@ calc_rank_or(const float *w, TSVector t, TSQuery q)
}
else
{
dimt = POSNULL.npos;
post = POSNULL.pos;
dimt = posnull.npos;
post = posnull.pos;
}
resj = 0.0;

7
src/include/tsearch/ts_type.h
View File

@ -66,6 +66,13 @@ typedef struct
WordEntryPos pos[FLEXIBLE_ARRAY_MEMBER];
} WordEntryPosVector;
/* WordEntryPosVector with exactly 1 entry */
typedef struct
{
uint16 npos;
WordEntryPos pos[1];
} WordEntryPosVector1;
#define WEP_GETWEIGHT(x) ( (x) >> 14 )
#define WEP_GETPOS(x) ( (x) & 0x3fff )