diff --git a/imgsmlr.c b/imgsmlr.c
index 84ee11f..21551e7 100755
--- a/imgsmlr.c
+++ b/imgsmlr.c
@@ -13,6 +13,11 @@
*-------------------------------------------------------------------------
*/
#include "postgres.h"
+#ifdef PG_VERSION_NUM
+#if PG_VERSION_NUM >= 160000
+#include "varatt.h"
+#endif
+#endif
#include "c.h"
#include "fmgr.h"
diff --git a/imgsmlr.h b/imgsmlr.h
index 9ee8cae..6810b39 100755
--- a/imgsmlr.h
+++ b/imgsmlr.h
@@ -37,3 +37,13 @@ typedef struct
#define CHECK_SIGNATURE_KEY(key) Assert(VARSIZE_ANY_EXHDR(key) == sizeof(Signature) || VARSIZE_ANY_EXHDR(key) == 2 * sizeof(Signature));
#endif /* IMGSMLR_H */
+
+
+#ifndef FALSE
+#define FALSE (0)
+#endif
+
+
+#ifndef TRUE
+#define TRUE (!FALSE)
+#endif
diff --git a/imgsmlr_idx.c b/imgsmlr_idx.c
index d85fbd0..81e0c97 100755
--- a/imgsmlr_idx.c
+++ b/imgsmlr_idx.c
@@ -13,6 +13,13 @@
*-------------------------------------------------------------------------
*/
#include "postgres.h"
+
+#ifdef PG_VERSION_NUM
+#if PG_VERSION_NUM >= 160000
+#include "varatt.h"
+#endif
+#endif
+
#include "fmgr.h"
#include "imgsmlr.h"
#include "access/gist.h"
@@ -77,19 +84,22 @@ signature_compress(PG_FUNCTION_ARGS)
Datum
signature_decompress(PG_FUNCTION_ARGS)
{
- GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
- bytea *key = DatumGetByteaP(PG_DETOAST_DATUM(entry->key));
-
- if (key != DatumGetByteaP(entry->key))
- {
- GISTENTRY *retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
-
- gistentryinit(*retval, PointerGetDatum(key),
- entry->rel, entry->page,
- entry->offset, FALSE);
- PG_RETURN_POINTER(retval);
- }
- PG_RETURN_POINTER(entry);
+ GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
+ bytea *detoastedKey = DatumGetByteaP(entry->key);
+ bytea *key = (bytea *) entry->key;
+
+ // Variable key is the original entry->key before detoasting, and it’s compared with the
+ // detoasted key. If they’re different, a new GISTENTRY is created. Otherwise, the original entry is returned.
+ if (key != detoastedKey)
+ {
+ GISTENTRY *retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
+
+ gistentryinit(*retval, PointerGetDatum(key),
+ entry->rel, entry->page,
+ entry->offset, FALSE);
+ PG_RETURN_POINTER(retval);
+ }
+ PG_RETURN_POINTER(entry);
}
Datum
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