Assume deconstruct_array() outputs are untoasted.

In functions that issue a deconstruct_array() call, consistently use
plain VARSIZE()/VARDATA() on the array elements.  Prior practice was
divided between those and VARSIZE_ANY_EXHDR()/VARDATA_ANY().

contrib/hstore/hstore_io.c

@@ -611,19 +611,22 @@ hstore_from_arrays(PG_FUNCTION_ARGS)
 
 		if (!value_nulls || value_nulls[i])
 		{
-			pairs[i].key = VARDATA_ANY(key_datums[i]);
+			pairs[i].key = VARDATA(key_datums[i]);
 			pairs[i].val = NULL;
-			pairs[i].keylen = hstoreCheckKeyLen(VARSIZE_ANY_EXHDR(key_datums[i]));
+			pairs[i].keylen =
+				hstoreCheckKeyLen(VARSIZE(key_datums[i]) - VARHDRSZ);
 			pairs[i].vallen = 4;
 			pairs[i].isnull = true;
 			pairs[i].needfree = false;
 		}
 		else
 		{
-			pairs[i].key = VARDATA_ANY(key_datums[i]);
-			pairs[i].val = VARDATA_ANY(value_datums[i]);
-			pairs[i].keylen = hstoreCheckKeyLen(VARSIZE_ANY_EXHDR(key_datums[i]));
-			pairs[i].vallen = hstoreCheckValLen(VARSIZE_ANY_EXHDR(value_datums[i]));
+			pairs[i].key = VARDATA(key_datums[i]);
+			pairs[i].val = VARDATA(value_datums[i]);
+			pairs[i].keylen =
+				hstoreCheckKeyLen(VARSIZE(key_datums[i]) - VARHDRSZ);
+			pairs[i].vallen =
+				hstoreCheckValLen(VARSIZE(value_datums[i]) - VARHDRSZ);
 			pairs[i].isnull = false;
 			pairs[i].needfree = false;
 		}
@@ -704,19 +707,22 @@ hstore_from_array(PG_FUNCTION_ARGS)
 
 		if (in_nulls[i * 2 + 1])
 		{
-			pairs[i].key = VARDATA_ANY(in_datums[i * 2]);
+			pairs[i].key = VARDATA(in_datums[i * 2]);
 			pairs[i].val = NULL;
-			pairs[i].keylen = hstoreCheckKeyLen(VARSIZE_ANY_EXHDR(in_datums[i * 2]));
+			pairs[i].keylen =
+				hstoreCheckKeyLen(VARSIZE(in_datums[i * 2]) - VARHDRSZ);
 			pairs[i].vallen = 4;
 			pairs[i].isnull = true;
 			pairs[i].needfree = false;
 		}
 		else
 		{
-			pairs[i].key = VARDATA_ANY(in_datums[i * 2]);
-			pairs[i].val = VARDATA_ANY(in_datums[i * 2 + 1]);
-			pairs[i].keylen = hstoreCheckKeyLen(VARSIZE_ANY_EXHDR(in_datums[i * 2]));
-			pairs[i].vallen = hstoreCheckValLen(VARSIZE_ANY_EXHDR(in_datums[i * 2 + 1]));
+			pairs[i].key = VARDATA(in_datums[i * 2]);
+			pairs[i].val = VARDATA(in_datums[i * 2 + 1]);
+			pairs[i].keylen =
+				hstoreCheckKeyLen(VARSIZE(in_datums[i * 2]) - VARHDRSZ);
+			pairs[i].vallen =
+				hstoreCheckValLen(VARSIZE(in_datums[i * 2 + 1]) - VARHDRSZ);
 			pairs[i].isnull = false;
 			pairs[i].needfree = false;
 		}

src/backend/access/common/reloptions.c

@@ -760,9 +760,8 @@ transformRelOptions(Datum oldOptions, List *defList, char *namspace,
 
 		for (i = 0; i < noldoptions; i++)
 		{
-			text	   *oldoption = DatumGetTextP(oldoptions[i]);
-			char	   *text_str = VARDATA(oldoption);
-			int			text_len = VARSIZE(oldoption) - VARHDRSZ;
+			char	   *text_str = VARDATA(oldoptions[i]);
+			int			text_len = VARSIZE(oldoptions[i]) - VARHDRSZ;
 
 			/* Search for a match in defList */
 			foreach(cell, defList)
@@ -1055,9 +1054,8 @@ parseRelOptions(Datum options, bool validate, relopt_kind kind,
 
 		for (i = 0; i < noptions; i++)
 		{
-			text	   *optiontext = DatumGetTextP(optiondatums[i]);
-			char	   *text_str = VARDATA(optiontext);
-			int			text_len = VARSIZE(optiontext) - VARHDRSZ;
+			char	   *text_str = VARDATA(optiondatums[i]);
+			int			text_len = VARSIZE(optiondatums[i]) - VARHDRSZ;
 			int			j;
 
 			/* Search for a match in reloptions */

src/backend/utils/adt/jsonb_gin.c

@@ -172,8 +172,8 @@ gin_extract_jsonb_query(PG_FUNCTION_ARGS)
 			if (key_nulls[i])
 				continue;
 			entries[j++] = make_text_key(JGINFLAG_KEY,
-										 VARDATA_ANY(key_datums[i]),
-										 VARSIZE_ANY_EXHDR(key_datums[i]));
+										 VARDATA(key_datums[i]),
+										 VARSIZE(key_datums[i]) - VARHDRSZ);
 		}
 
 		*nentries = j;

src/backend/utils/adt/jsonfuncs.c

@@ -1240,8 +1240,8 @@ get_jsonb_path_all(FunctionCallInfo fcinfo, bool as_text)
 		{
 			jbvp = findJsonbValueFromContainerLen(container,
 												  JB_FOBJECT,
-												  VARDATA_ANY(pathtext[i]),
-											 VARSIZE_ANY_EXHDR(pathtext[i]));
+												  VARDATA(pathtext[i]),
+											VARSIZE(pathtext[i]) - VARHDRSZ);
 		}
 		else if (have_array)
 		{

src/backend/utils/adt/pg_upgrade_support.c

@@ -163,8 +163,7 @@ binary_upgrade_create_empty_extension(PG_FUNCTION_ARGS)
 						  &textDatums, NULL, &ndatums);
 		for (i = 0; i < ndatums; i++)
 		{
-			text	   *txtname = DatumGetTextPP(textDatums[i]);
-			char	   *extName = text_to_cstring(txtname);
+			char	   *extName = TextDatumGetCString(textDatums[i]);
 			Oid			extOid = get_extension_oid(extName, false);
 
 			requiredExtensions = lappend_oid(requiredExtensions, extOid);

src/backend/utils/adt/tsvector_op.c

@@ -323,7 +323,7 @@ tsvector_setweight_by_filter(PG_FUNCTION_ARGS)
 					 errmsg("lexeme array may not contain nulls")));
 
 		lex = VARDATA(dlexemes[i]);
-		lex_len = VARSIZE_ANY_EXHDR(dlexemes[i]);
+		lex_len = VARSIZE(dlexemes[i]) - VARHDRSZ;
 		lex_pos = tsvector_bsearch(tsout, lex, lex_len);
 
 		if (lex_pos >= 0 && (j = POSDATALEN(tsout, entry + lex_pos)) != 0)
@@ -609,8 +609,8 @@ tsvector_delete_arr(PG_FUNCTION_ARGS)
 					(errcode(ERRCODE_NULL_VALUE_NOT_ALLOWED),
 					 errmsg("lexeme array may not contain nulls")));
 
-		lex = VARDATA_ANY(dlexemes[i]);
-		lex_len = VARSIZE_ANY_EXHDR(dlexemes[i]);
+		lex = VARDATA(dlexemes[i]);
+		lex_len = VARSIZE(dlexemes[i]) - VARHDRSZ;
 		lex_pos = tsvector_bsearch(tsin, lex, lex_len);
 
 		if (lex_pos >= 0)
@@ -793,7 +793,7 @@ array_to_tsvector(PG_FUNCTION_ARGS)
 
 	/* Calculate space needed for surviving lexemes. */
 	for (i = 0; i < nitems; i++)
-		datalen += VARSIZE_ANY_EXHDR(dlexemes[i]);
+		datalen += VARSIZE(dlexemes[i]) - VARHDRSZ;
 	tslen = CALCDATASIZE(nitems, datalen);
 
 	/* Allocate and fill tsvector. */
@@ -805,8 +805,8 @@ array_to_tsvector(PG_FUNCTION_ARGS)
 	cur = STRPTR(tsout);
 	for (i = 0; i < nitems; i++)
 	{
-		char	   *lex = VARDATA_ANY(dlexemes[i]);
-		int			lex_len = VARSIZE_ANY_EXHDR(dlexemes[i]);
+		char	   *lex = VARDATA(dlexemes[i]);
+		int			lex_len = VARSIZE(dlexemes[i]) - VARHDRSZ;
 
 		memcpy(cur, lex, lex_len);
 		arrout[i].haspos = 0;