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tests: avoid referencing stale readdir pointer

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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@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2020-02-07 14:51:26 +00:00
parent 26badd13e8
commit 29c4a3c753
1 changed files with 3 additions and 2 deletions
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5
tests/testutilsqemu.c
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@ -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;
}
}