myxce/.wolf/bugs/bug-1497.md
Rongsong Shen d26ff8870d
feat(buglog): one Markdown record per bug, checked against a record standard
The buglog was one 27K-line JSON file whose fields covered only symptom,
root cause and fix, as free text: 2% of entries named the code version a
bug was found on, 12% the build profile, 36% a way to reproduce, and 58% of
the file was OpenWolf hook auto-detections ("Missing guard clause",
"Function not marked async" on .md files).

- .claude/skills/buglog/bug-record.md: the record standard. Eight
  sections (Summary as the title, Description, Environment, Reproduction;
  Root cause, Fix, Verification, References once fixed), each with the
  content it must contain -- e.g. Environment needs the OS, the libc the
  failing binary loads (from its ELF interpreter: glibc 2.42 in the nix
  shell vs 2.40 on the host), toolchain, build profile and commit.
- .wolf/bugs/<id>.md: 500 records migrated from buglog.json; every field
  verified to round-trip. They carry legacy: true and an explicit "not
  recorded" where the old log had no such field; component derived from
  file paths, severity from keywords (else unknown), fix_commits from
  hashes in status_note/fix that git resolves (91 of 463 fixed).
- .wolf/buglog-archive.json: the 710 hook auto-detections, verbatim.
- .wolf/buglog.json is now an index generated from the records, keeping
  the fields OpenWolf's hooks and `openwolf bug search` read.
- scripts/buglog.py rewritten: new (template + Environment collected from
  the machine and --binary), check, status (refuses a status the record
  doesn't support; fixed needs Root cause, Fix, Verification and
  --commit hashes git resolves), note, recur, set, show, list, triage,
  env, index. 29 unittest cases in scripts/tests/test_buglog.py.
- scripts/git-hooks/pre-commit runs `check --staged`: incomplete staged
  records, a legacy record hand-changed to fixed without the fix-time
  sections, a new record claiming legacy: true, or a stale index refuse
  the commit.
- scripts/gitea-sync.py reads the records: issue body = the record's
  sections plus linked fix commits (origin remote, GITEA_COMMIT_REPO to
  override), and a body hash so an issue's text is refreshed when the
  record changes.
- bug-1866 rewritten to the full standard as the worked example.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-09-28 03:40:11 +00:00

38 lines
1.6 KiB
Markdown

---
id: "bug-1497"
status: "fixed"
status_updated: "2026-09-24"
status_note: ""
component: "scheduler"
severity: "crash"
timestamp: "2026-08-04T00:00:00Z"
last_seen: "2026-09-19T09:00:00Z"
occurrences: 1
files: ["src/scheduler/testsuite/test_snapshot_save_load.c"]
tags: ["scheduler-core", "task-8.1", "test_snapshot_save_load.c", "xce_val_t", "zero-init-union-discriminant", "test-only", "asan-segv"]
related: []
legacy: true
---
# bug-1497: ASan SEGV inside dup_val() -> makeString() -> hash_string() while building…
## Description
ASan SEGV inside dup_val() -> makeString() -> hash_string() while building test_snapshot_save_load.c's cross-core equivalence test fixtures.
## Environment
_Not recorded (migrated from buglog.json)._
## Reproduction
_Not recorded (migrated from buglog.json)._
## Root cause
Test-side only, not production code: three test-owned xce_val_t resval fixtures were left with `.which` at its memset-zero default. XCE_VAL_STRING happens to be enum value 0 (xce/types.h), so the zeroed `.which` was silently interpreted as "this is a string" -- dup_val()/makeString() then reinterpreted the fixture's raw ivalue32 int as a char* pointer and hash_string() dereferenced it, crashing.
## Fix
Explicitly set `.which = XCE_VAL_NUMERIC` on all three test-owned xce_val_t fixtures in test_snapshot_save_load.c before use -- never rely on struct-zero-init to select a union discriminant when a non-zero-valued enum member (XCE_VAL_NUMERIC) is the intended default.
## Verification
_Not recorded (migrated from buglog.json)._
## References
_Not recorded (migrated from buglog.json)._