Fix agtype integer division overflow

regress/expected/expr.out

@@ -26,6 +26,11 @@ NOTICE:  graph "expr" has been created
 
 (1 row)
 
+-- Integer division must report bigint overflow instead of raising SIGFPE.
+SELECT * FROM cypher('expr', $$
+RETURN (-9223372036854775807 - 1) / -1
+$$) AS (r agtype);
+ERROR:  bigint out of range
 --
 -- map literal
 --

regress/sql/expr.sql

@@ -23,6 +23,11 @@ SET search_path TO ag_catalog;
 
 SELECT * FROM create_graph('expr');
 
+-- Integer division must report bigint overflow instead of raising SIGFPE.
+SELECT * FROM cypher('expr', $$
+RETURN (-9223372036854775807 - 1) / -1
+$$) AS (r agtype);
+
 --
 -- map literal
 --

src/backend/utils/adt/agtype_ops.c

@@ -795,6 +795,14 @@ Datum agtype_div(PG_FUNCTION_ARGS)
             PG_RETURN_NULL();
         }
 
+        if (agtv_lhs->val.int_value == PG_INT64_MIN &&
+            agtv_rhs->val.int_value == -1)
+        {
+            ereport(ERROR, (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
+                            errmsg("bigint out of range")));
+            PG_RETURN_NULL();
+        }
+
         agtv_result.type = AGTV_INTEGER;
         agtv_result.val.int_value = agtv_lhs->val.int_value /
                                     agtv_rhs->val.int_value;