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maxsharabayko / srt-xtransmit

SRT transmission application used for testing
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GCC warning about copying 26 bytes from 16 byte structure. #92

Closed maxsharabayko closed 5 months ago

maxsharabayko commented 5 months ago

GCC 12.3.0:

[ 79%] Building CXX object xtransmit/CMakeFiles/srt-xtransmit.dir/srt_socket_group.cpp.o
In file included from /usr/include/string.h:535,
                 from /usr/include/c++/12/cstring:42,
                 from /srt-xtransmit/submodule/spdlog/include/spdlog/fmt/bundled/core.h:12,
                 from /srt-xtransmit/submodule/spdlog/include/spdlog/fmt/fmt.h:20,
                 from /srt-xtransmit/submodule/spdlog/include/spdlog/common.h:36,
                 from /srt-xtransmit/submodule/spdlog/include/spdlog/spdlog.h:12,
                 from /srt-xtransmit/xtransmit/srt_socket_group.cpp:8:
In function ‘void* memcpy(void*, const void*, size_t)’,
    inlined from ‘void xtransmit::netaddr_any::set(const sockaddr*)’ at /srt-xtransmit/xtransmit/netaddr_any.hpp:153:19,
    inlined from ‘xtransmit::netaddr_any::netaddr_any(const sockaddr*, len_t)’ at /srt-xtransmit/xtransmit/netaddr_any.hpp:136:16,
    inlined from ‘static int xtransmit::socket::srt_group::listen_callback_fn(void*, SRTSOCKET, int, const sockaddr*, const char*)’ at /srt-xtransmit/xtransmit/srt_socket_group.cpp:442:40:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:29:33: warning: ‘void* __builtin_memcpy(void*, const void*, long unsigned int)’ reading 28 bytes from a region of size 16 [-Wstringop-overread]
   29 |   return __builtin___memcpy_chk (__dest, __src, __len,
      |          ~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
   30 |                                  __glibc_objsize0 (__dest));
      |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~
/srt-xtransmit/xtransmit/srt_socket_group.cpp: In static member function ‘static int xtransmit::socket::srt_group::listen_callback_fn(void*, SRTSOCKET, int, const sockaddr*, const char*)’:
/srt-xtransmit/xtransmit/srt_socket_group.cpp:439:18: note: source object ‘host_sa’ of size 16
  439 |         sockaddr host_sa = {};
      |                  ^~~~~~~
[ 80%] Linking CXX executable ../bin/srt-xtransmit