2099
81%

Ran 09 Apr 2026 07:49PM UTC

Jobs 1

Files 37

Run time 1min

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Committed 09 Apr 2026 07:36PM UTC coverage: 80.342% (-0.6%) from 80.922%

Build # 2099

Build Type

push

travis-ci

Committed by

ivmai

Commit Message

Prevent abort in GC_suspend in case of thread terminated by DllMain

Issue #886 (bdwgc).

A race condition is possible where we read `pending_delete_thread` as
false but the thread terminates before we reach the suspend.  In this
case, there is we should not abort because the thread has terminated
and does not need suspension.  We should be able to recognize this case
by checking the last error code (`SuspendThread()` on a terminated
thread should set an error code of `ERROR_ACCESS_DENIED` or
`ERROR_NO_MORE_ITEMS`).

* win32_threads.c [!MSWINCE] (GC_suspend): Code refactoring to have
`SuspendThread()` call in a single place.
* win32_threads.c [!MSWINCE && !GC_NO_THREADS_DISCOVERY] (GC_suspend):
If `SuspendThread()` failed with `ERROR_ACCESS_DENIED` or
`ERROR_NO_MORE_ITEMS`, then assume the thread has been just terminated
(set `t->pending_delete_thread` and return).

Co-authored-by: Tobiasz Laskowski <tobil4sk@outlook.com>

Coverage Stats

7197 of 8958 relevant lines covered (80.34%)

20016292.6 hits per line

Coverage Regressions

Lines	Coverage	∆	File
33	70.28	-4.83%	finalize.c
30	83.33	0.0%	mallocx.c
29	87.56	-4.45%	mark.c
1	89.49	0.0%	malloc.c

Jobs

ID	Job ID	Ran	Files	Coverage
1	2099.1	09 Apr 2026 07:49PM UTC	37	80.34	Travis Job

bdwgc / bdwgc / 2099
81%

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