Commit graph xserver/test/list_zeroinit.c
Author SHA1 Message Date
Enrico Weigelt, metux IT consult
b40d0ec6fd license: add X11 OR MIT OR AGPL-3.0-or-later to Enrico Weigelt's source files
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Update SPDX-License-Identifier from MIT OR X11 (or MIT OR X11 OR AGPLv3+ variants)
to the canonical X11 OR MIT OR AGPL-3.0-or-later on 95 existing source files.
Add the triple-license header to 33 newly-identified files authored by Enrico
Weigelt that were missing SPDX headers entirely.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
2026-07-29 10:02:59 +02:00
Enrico Weigelt, metux IT consult
ae2cfcdee3 test: list: cover zero-initialized xorg_list heads
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Add regression tests for xorg_list operations on a *zero-initialized*
list head (next == prev == NULL), i.e. a head embedded in a calloc()'d
struct that was never run through xorg_list_init().

Covers the paths hardened in the preceding commit, so the gap found while
repairing #1639 (a never-init'd client->saveSets crashing
DeleteWindowFromAnySaveSet() via xorg_list_for_each_entry_safe()) cannot
silently regress:

 - xorg_list_del() on a zeroed head (the documented "reset to empty list")
 - xorg_list_for_each_entry_safe() over a zeroed/empty head
 - add + safe-delete drain starting from a zeroed head

Without the macro fix these dereference NULL and crash; run_test_in_child()
forks per test, so the crash surfaces as a unit-test failure (verified: the
test fails at both -O0 and -O2 on the pre-fix tree, passes with the fix).

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-25 13:14:33 +02:00