Page MenuHomeFreeBSD
Differential D51832

stdio: Fix bug in integer-parsing FSM
ClosedPublic
Actions

Authored by des on Aug 8 2025, 6:33 PM.
Tags
None
Referenced Files
Unknown Object (File)
Tue, Jun 30, 9:42 PM
Unknown Object (File)
Mon, Jun 29, 10:09 PM
Unknown Object (File)
Sat, Jun 27, 12:27 PM
Unknown Object (File)
Wed, Jun 24, 2:42 AM
Unknown Object (File)
Sun, Jun 21, 6:33 PM
Unknown Object (File)
Sun, Jun 21, 12:50 AM
Unknown Object (File)
Sat, Jun 20, 10:03 AM
Unknown Object (File)
May 12 2026, 1:43 AM
View All 46 Files
Subscribers
imp

Details

Reviewers
mandree
diizzy
Commits
rG89906b9b20fd: stdio: Fix bug in integer-parsing FSM
rG602e98dd35ea: stdio: Fix bug in integer-parsing FSM
Summary

If we encounter a zero in the havezero state, we should assume octal,
just like we would if we encountered any other digit below 8.

MFC after: 1 week
PR: 288440
Fixes: d9dc1603d6e4

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 66121
Build 63004: arc lint + arc unit

Event Timeline

des created this revision.Aug 8 2025, 6:33 PM
Herald added a subscriber: imp. · View Herald TranscriptAug 8 2025, 6:33 PM
des requested review of this revision.Aug 8 2025, 6:33 PM
Harbormaster completed remote builds in B66121: Diff 160081.Aug 8 2025, 6:33 PM
mandree accepted this revision.Aug 8 2025, 10:03 PM

Code reviewed -> implementation makes sense to me.
Practice -> patched 14.3-RELEASE-p1's source tree with this patch, tested my demo program from PR 284400 -> bug fixed.

Thank you!

This revision is now accepted and ready to land.Aug 8 2025, 10:03 PM
mandree added a reviewer: diizzy.Aug 8 2025, 10:04 PM
Closed by commit rG602e98dd35ea: stdio: Fix bug in integer-parsing FSM (authored by des). · Explain WhyAug 8 2025, 10:47 PM
This revision was automatically updated to reflect the committed changes.
des added a commit: rG602e98dd35ea: stdio: Fix bug in integer-parsing FSM.
des added a commit: rG89906b9b20fd: stdio: Fix bug in integer-parsing FSM.Aug 14 2025, 4:04 PM

Revision Contents
Changeset List

PathSize
lib/
libc/
stdio/
5 lines
5 lines
tests/
stdio/
25 lines
25 lines

Diff 160081

View Options

lib/libc/stdio/vfscanf.c

Loading...
View Options

lib/libc/stdio/vfwscanf.c

Loading...
View Options

lib/libc/tests/stdio/sscanf_test.c

Loading...
View Options

lib/libc/tests/stdio/swscanf_test.c

Loading...