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| author | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2015-02-02 21:32:28 -0500 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2015-02-02 21:34:35 -0500 |
| commit | 6cb8e687f038424ef54b5c5c3c433be974fbe371 (patch) | |
| tree | b905dd98bb19544edd2e2e3085a3820e4e33d29c | |
| parent | c1d630d5fd3c0b3307811d51f9840652e066a0f2 (diff) | |
network-address,test-network: avoid undefined behaviour
| -rw-r--r-- | src/network/networkd-address.c | 4 | ||||
| -rw-r--r-- | src/network/test-network.c | 3 |
2 files changed, 5 insertions, 2 deletions
diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c index ce0e923cb..47033acde 100644 --- a/src/network/networkd-address.c +++ b/src/network/networkd-address.c @@ -592,6 +592,10 @@ bool address_equal(Address *a1, Address *a2) { case AF_INET: if (a1->prefixlen != a2->prefixlen) return false; + else if (a1->prefixlen == 0) + /* make sure we don't try to shift by 32. + * See ISO/IEC 9899:TC3 § 6.5.7.3. */ + return true; else { uint32_t b1, b2; diff --git a/src/network/test-network.c b/src/network/test-network.c index ea9f93864..b4a7be00f 100644 --- a/src/network/test-network.c +++ b/src/network/test-network.c @@ -158,10 +158,9 @@ static void test_address_equality(void) { assert_se(address_equal(a1, a2)); assert_se(inet_pton(AF_INET, "192.168.3.9", &a1->in_addr.in)); - assert_se(!address_equal(a1, a2)); + assert_se(address_equal(a1, a2)); assert_se(inet_pton(AF_INET, "192.168.3.9", &a2->in_addr.in)); assert_se(address_equal(a1, a2)); - a1->prefixlen = 10; assert_se(!address_equal(a1, a2)); a2->prefixlen = 10; |