The contents of 'struct dirent' are only valid until the next call to readdir() or closedir(). It is thus invalid to save a pointer to the 'd_name' field. Somehow this hasn't affected the test suite until recently when FreeBSD 12 started showing use of uninitialized memory resulting in test failures. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- Pushed as a build fix tests/testutilsqemu.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tests/testutilsqemu.c b/tests/testutilsqemu.c index c17e284930..0cb9a7456d 100644 --- a/tests/testutilsqemu.c +++ b/tests/testutilsqemu.c @@ -497,7 +497,7 @@ testQemuGetLatestCapsForArch(const char *arch, char *tmp = NULL; unsigned long maxver = 0; unsigned long ver; - const char *maxname = NULL; + g_autofree char *maxname = NULL; char *ret = NULL; fullsuffix = g_strdup_printf("%s.%s", arch, suffix); @@ -522,7 +522,8 @@ testQemuGetLatestCapsForArch(const char *arch, } if (ver > maxver) { - maxname = ent->d_name; + g_free(maxname); + maxname = g_strdup(ent->d_name); maxver = ver; } } -- 2.24.1