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test/unit: Fix compilation of ip4 test
../../../../src/../test/unit/ip4/test_ip4.c: In function ‘test_ip4_icmp_replylen_short’: ../../../../src/../test/unit/ip4/test_ip4.c:291:35: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare] fail_unless(linkoutput_byte_ctr == icmp_len + sizeof(unknown_proto)); Plus minor cleanup in second icmp reply test
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@ -18,7 +18,7 @@ static struct netif test_netif;
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static ip4_addr_t test_ipaddr, test_netmask, test_gw;
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static int linkoutput_ctr;
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static int linkoutput_byte_ctr;
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static int linkoutput_pkt_len;
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static u16_t linkoutput_pkt_len;
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static u8_t linkoutput_pkt[100];
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/* reference internal lwip variable in netif.c */
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@ -288,7 +288,7 @@ START_TEST(test_ip4_icmp_replylen_short)
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fail_unless(linkoutput_ctr == 1);
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/* Verify outgoing ICMP packet has no extra data */
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fail_unless(linkoutput_byte_ctr == icmp_len + sizeof(unknown_proto));
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fail_unless(linkoutput_pkt_len == icmp_len + sizeof(unknown_proto));
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fail_if(memcmp(&linkoutput_pkt[icmp_len], unknown_proto, sizeof(unknown_proto)));
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}
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END_TEST
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@ -312,8 +312,8 @@ START_TEST(test_ip4_icmp_replylen_first_8)
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fail_unless(ip4_input(p, &test_netif) == ERR_OK);
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fail_unless(linkoutput_ctr == 1);
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fail_unless(linkoutput_byte_ctr == icmp_len + unreach_len);
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fail_if(memcmp(&linkoutput_pkt[icmp_len], unknown_proto, IP_HLEN + 8));
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fail_unless(linkoutput_pkt_len == icmp_len + unreach_len);
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fail_if(memcmp(&linkoutput_pkt[icmp_len], unknown_proto, unreach_len));
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}
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END_TEST
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