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Tue, 21 Feb 2017 20:14:13 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 13/24] test-cutils: Cover qemu_strtosz() around range limits X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake --- tests/test-cutils.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++= ++-- 1 file changed, 59 insertions(+), 2 deletions(-) diff --git a/tests/test-cutils.c b/tests/test-cutils.c index 1773f15..df6c330 100644 --- a/tests/test-cutils.c +++ b/tests/test-cutils.c @@ -1371,16 +1371,52 @@ static void test_qemu_strtou64_full_max(void) =20 static void test_qemu_strtosz_simple(void) { - const char *str =3D "12345M"; + const char *str; char *endptr =3D NULL; int64_t res; =20 + str =3D "0"; + res =3D qemu_strtosz(str, &endptr); + g_assert_cmpint(res, =3D=3D, 0); + g_assert(endptr =3D=3D str + 1); + + str =3D "12345M"; res =3D qemu_strtosz(str, &endptr); g_assert_cmpint(res, =3D=3D, 12345 * M_BYTE); g_assert(endptr =3D=3D str + 6); =20 res =3D qemu_strtosz(str, NULL); g_assert_cmpint(res, =3D=3D, 12345 * M_BYTE); + + /* Note: precision is 53 bits since we're parsing with strtod() */ + + str =3D "9007199254740991"; /* 2^53-1 */ + res =3D qemu_strtosz_suffix(str, &endptr, QEMU_STRTOSZ_DEFSUFFIX_B); + g_assert_cmpint(res, =3D=3D, 0x1fffffffffffff); + g_assert(endptr =3D=3D str + 16); + + str =3D "9007199254740992"; /* 2^53 */ + res =3D qemu_strtosz_suffix(str, &endptr, QEMU_STRTOSZ_DEFSUFFIX_B); + g_assert_cmpint(res, =3D=3D, 0x20000000000000); + g_assert(endptr =3D=3D str + 16); + + str =3D "9007199254740993"; /* 2^53+1 */ + res =3D qemu_strtosz_suffix(str, &endptr, QEMU_STRTOSZ_DEFSUFFIX_B); + g_assert_cmpint(res, =3D=3D, 0x20000000000000); /* rounded to 53 bits = */ + g_assert(endptr =3D=3D str + 16); + + str =3D "9223372036854774784"; /* 0x7ffffffffffffc00 (53 msbs set) */ + res =3D qemu_strtosz_suffix(str, &endptr, QEMU_STRTOSZ_DEFSUFFIX_B); + g_assert_cmpint(res, =3D=3D, 0x7ffffffffffffc00); + g_assert(endptr =3D=3D str + 19); + + str =3D "9223372036854775295"; /* 0x7ffffffffffffdff */ + res =3D qemu_strtosz_suffix(str, &endptr, QEMU_STRTOSZ_DEFSUFFIX_B); + g_assert_cmpint(res, =3D=3D, 0x7ffffffffffffc00); /* rounded to 53 bit= s */ + g_assert(endptr =3D=3D str + 19); + + /* 0x7ffffffffffffe00..0x7fffffffffffffff get rounded to + * 0x8000000000000000, thus -ERANGE; see test_qemu_strtosz_erange() */ } =20 static void test_qemu_strtosz_units(void) @@ -1482,10 +1518,31 @@ static void test_qemu_strtosz_trailing(void) =20 static void test_qemu_strtosz_erange(void) { - const char *str =3D "10E"; + const char *str; char *endptr =3D NULL; int64_t res; =20 + str =3D "-1"; + res =3D qemu_strtosz(str, &endptr); + g_assert_cmpint(res, =3D=3D, -ERANGE); + g_assert(endptr =3D=3D str + 2); + + str =3D "9223372036854775296"; /* 0x7ffffffffffffe00 */ + res =3D qemu_strtosz_suffix(str, &endptr, QEMU_STRTOSZ_DEFSUFFIX_B); + g_assert_cmpint(res, =3D=3D, -ERANGE); + g_assert(endptr =3D=3D str + 19); + + str =3D "9223372036854775807"; /* 2^63-1 */ + res =3D qemu_strtosz_suffix(str, &endptr, QEMU_STRTOSZ_DEFSUFFIX_B); + g_assert_cmpint(res, =3D=3D, -ERANGE); + g_assert(endptr =3D=3D str + 19); + + str =3D "9223372036854775808"; /* 2^63 */ + res =3D qemu_strtosz_suffix(str, &endptr, QEMU_STRTOSZ_DEFSUFFIX_B); + g_assert_cmpint(res, =3D=3D, -ERANGE); + g_assert(endptr =3D=3D str + 19); + + str =3D "10E"; res =3D qemu_strtosz(str, &endptr); g_assert_cmpint(res, =3D=3D, -ERANGE); g_assert(endptr =3D=3D str + 3); --=20 2.7.4