[MDEV-11711] ArmHF EXPLAIN JSON garbage longlong values printed Created: 2017-01-03  Updated: 2017-01-17  Resolved: 2017-01-17

Status: Closed
Project: MariaDB Server
Component/s: Optimizer, Platform Debian
Affects Version/s: 10.1
Fix Version/s: 10.1.21

Type: Bug Priority: Major
Reporter: Vicențiu Ciorbaru Assignee: Vicențiu Ciorbaru
Resolution: Fixed Votes: 0
Labels: armhf, explain_json, foundation

Issue Links:
Relates
relates to MDEV-11712 ArmHF garbage longlong value printed ... Closed

 Description   

The following tests fail on an ArmHF machine compiling with gcc 6.2.0.

main.analyze_stmt_orderby main.explain_json_innodb main.explain_json_format_partitions main.analyze_format_json main.subselect_cache main.explain_json

The failures show differences when printing JSON output:

 ANALYZE
 {
   "query_block": {
-    "select_id": 1,
-    "r_loops": 1,
+    "select_id": -1637998592,
+    "r_loops": -1637998592,
     "r_total_time_ms": "REPLACED",
     "table": {
       "table_name": "t3",
       "access_type": "ALL",
-      "r_loops": 1,
-      "rows": 10,
+      "r_loops": -1637998592,
+      "rows": -1637998592,
       "r_rows": 10,
       "r_total_time_ms": "REPLACED",
       "filtered": 100,

The failures are intermittent, suggesting reading of uninitialised data.


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