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gsocket: Add assertions about socket address sizes for memcpy()
These `memcpy()` calls only happen if `g_inet_address_get_family(group) == G_SOCKET_FAMILY_IPV4`, so the assertions should never fail. It’s helpful for understanding the code, and for static analysis, to add the assertions though. Signed-off-by: Philip Withnall <pwithnall@endlessos.org> Coverity CID: #1486858
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@@ -2604,8 +2604,12 @@ g_socket_multicast_group_operation_ssm (GSocket *socket,
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S_ADDR_FIELD(mc_req_src) = iface_addr->sin_addr.s_addr;
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#endif /* defined(G_OS_WIN32) && defined (HAVE_IF_NAMETOINDEX) */
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}
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g_assert (g_inet_address_get_native_size (group) == sizeof (mc_req_src.imr_multiaddr));
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memcpy (&mc_req_src.imr_multiaddr, g_inet_address_to_bytes (group),
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g_inet_address_get_native_size (group));
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g_assert (g_inet_address_get_native_size (source_specific) == sizeof (mc_req_src.imr_sourceaddr));
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memcpy (&mc_req_src.imr_sourceaddr,
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g_inet_address_to_bytes (source_specific),
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g_inet_address_get_native_size (source_specific));
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