Consistently use PG_INT(16|32|64)_(MIN|MAX).

Per buildfarm animal woodlouse.

contrib/btree_gist/btree_cash.c

@@ -101,7 +101,7 @@ cash_dist(PG_FUNCTION_ARGS)
 	Cash		ra;
 
 	if (pg_sub_s64_overflow(a, b, &r) ||
-		r == INT64_MIN)
+		r == PG_INT64_MIN)
 		ereport(ERROR,
 				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 				 errmsg("money out of range")));

contrib/btree_gist/btree_int2.c

@@ -100,7 +100,7 @@ int2_dist(PG_FUNCTION_ARGS)
 	int16		ra;
 
 	if (pg_sub_s16_overflow(a, b, &r) ||
-		r == INT16_MIN)
+		r == PG_INT16_MIN)
 		ereport(ERROR,
 				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 				 errmsg("smallint out of range")));

contrib/btree_gist/btree_int4.c

@@ -101,7 +101,7 @@ int4_dist(PG_FUNCTION_ARGS)
 	int32		ra;
 
 	if (pg_sub_s32_overflow(a, b, &r) ||
-		r == INT32_MIN)
+		r == PG_INT32_MIN)
 		ereport(ERROR,
 				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 				 errmsg("integer out of range")));

contrib/btree_gist/btree_int8.c

@@ -101,7 +101,7 @@ int8_dist(PG_FUNCTION_ARGS)
 	int64		ra;
 
 	if (pg_sub_s64_overflow(a, b, &r) ||
-		r == INT64_MIN)
+		r == PG_INT64_MIN)
 		ereport(ERROR,
 				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 				 errmsg("bigint out of range")));

src/backend/utils/adt/int.c

@@ -794,7 +794,7 @@ int2div(PG_FUNCTION_ARGS)
 	 */
 	if (arg2 == -1)
 	{
-		if (unlikely(arg1 == INT16_MIN))
+		if (unlikely(arg1 == PG_INT16_MIN))
 			ereport(ERROR,
 					(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 					 errmsg("smallint out of range")));
@@ -1018,7 +1018,7 @@ int4abs(PG_FUNCTION_ARGS)
 	int32		arg1 = PG_GETARG_INT32(0);
 	int32		result;
 
-	if (unlikely(arg1 == INT32_MIN))
+	if (unlikely(arg1 == PG_INT32_MIN))
 		ereport(ERROR,
 				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 				 errmsg("integer out of range")));
@@ -1032,7 +1032,7 @@ int2abs(PG_FUNCTION_ARGS)
 	int16		arg1 = PG_GETARG_INT16(0);
 	int16		result;
 
-	if (unlikely(arg1 == INT16_MIN))
+	if (unlikely(arg1 == PG_INT16_MIN))
 		ereport(ERROR,
 				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 				 errmsg("smallint out of range")));

src/backend/utils/adt/int8.c

@@ -103,7 +103,7 @@ scanint8(const char *str, bool errorOK, int64 *result)
 
 	if (!neg)
 	{
-		if (unlikely(tmp == INT64_MIN))
+		if (unlikely(tmp == PG_INT64_MIN))
 			goto out_of_range;
 		tmp = -tmp;
 	}
@@ -564,7 +564,7 @@ int8div(PG_FUNCTION_ARGS)
 	 */
 	if (arg2 == -1)
 	{
-		if (unlikely(arg1 == INT64_MIN))
+		if (unlikely(arg1 == PG_INT64_MIN))
 			ereport(ERROR,
 					(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 					 errmsg("bigint out of range")));
@@ -588,7 +588,7 @@ int8abs(PG_FUNCTION_ARGS)
 	int64		arg1 = PG_GETARG_INT64(0);
 	int64		result;
 
-	if (unlikely(arg1 == INT64_MIN))
+	if (unlikely(arg1 == PG_INT64_MIN))
 		ereport(ERROR,
 				(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 				 errmsg("bigint out of range")));
@@ -822,7 +822,7 @@ int84div(PG_FUNCTION_ARGS)
 	 */
 	if (arg2 == -1)
 	{
-		if (unlikely(arg1 == INT64_MIN))
+		if (unlikely(arg1 == PG_INT64_MIN))
 			ereport(ERROR,
 					(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 					 errmsg("bigint out of range")));
@@ -964,7 +964,7 @@ int82div(PG_FUNCTION_ARGS)
 	 */
 	if (arg2 == -1)
 	{
-		if (unlikely(arg1 == INT64_MIN))
+		if (unlikely(arg1 == PG_INT64_MIN))
 			ereport(ERROR,
 					(errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
 					 errmsg("bigint out of range")));

src/backend/utils/adt/numeric.c

@@ -6226,7 +6226,7 @@ numericvar_to_int64(const NumericVar *var, int64 *result)
 
 	if (!neg)
 	{
-		if (unlikely(val == INT64_MIN))
+		if (unlikely(val == PG_INT64_MIN))
 			return false;
 		val = -val;
 	}