diff --git a/pg_query_state.c b/pg_query_state.c
index 46556d1..d461e20 100644
--- a/pg_query_state.c
+++ b/pg_query_state.c
@@ -970,19 +970,21 @@ receive_msg_by_parts(shm_mq_handle *mqh, Size *total, void **datap,
shm_mq_result mq_receive_result;
shm_mq_msg *buff;
int offset;
- int *expected;
+ int *expected;
+ int expected_data;
Size len;
/* Get the expected number of bytes in message */
mq_receive_result = shm_mq_receive(mqh, &len, (void **) &expected, nowait);
+ expected_data = *expected;
if (mq_receive_result != SHM_MQ_SUCCESS)
return mq_receive_result;
Assert(len == sizeof(int));
- *datap = palloc0(*expected);
+ *datap = palloc0(expected_data);
/* Get the message itself */
- for (offset = 0; offset < *expected; )
+ for (offset = 0; offset < expected_data; )
{
/* Keep receiving new messages until we assemble the full message */
mq_receive_result = shm_mq_receive(mqh, &len, ((void **) &buff), nowait);
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