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Use FLEXIBLE_ARRAY_MEMBER in struct varlena.

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This forces some minor coding adjustments in tuptoaster.c and inv_api.c,
but the new coding there is cleaner anyway.

Michael Paquier
This commit is contained in:
Tom Lane
2015-02-20 16:51:53 -05:00
parent 8902f79264
commit e38b1eb098
3 changed files with 16 additions and 10 deletions
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16
src/backend/storage/large_object/inv_api.c
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@@ -562,11 +562,13 @@ inv_write(LargeObjectDesc *obj_desc, const char *buf, int nbytes)
bool neednextpage;
bytea *datafield;
bool pfreeit;
struct
union
{
bytea hdr;
char data[LOBLKSIZE]; /* make struct big enough */
int32 align_it; /* ensure struct is aligned well enough */
/* this is to make the union big enough for a LO data chunk: */
char data[LOBLKSIZE + VARHDRSZ];
/* ensure union is aligned well enough: */
int32 align_it;
} workbuf;
char *workb = VARDATA(&workbuf.hdr);
HeapTuple newtup;
@@ -748,11 +750,13 @@ inv_truncate(LargeObjectDesc *obj_desc, int64 len)
SysScanDesc sd;
HeapTuple oldtuple;
Form_pg_largeobject olddata;
struct
union
{
bytea hdr;
char data[LOBLKSIZE]; /* make struct big enough */
int32 align_it; /* ensure struct is aligned well enough */
/* this is to make the union big enough for a LO data chunk: */
char data[LOBLKSIZE + VARHDRSZ];
/* ensure union is aligned well enough: */
int32 align_it;
} workbuf;
char *workb = VARDATA(&workbuf.hdr);
HeapTuple newtup;