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I ran a vagrant analysis that revealed the following definite memory leaks in libhrd_cpp caused by the memcached connectors:
==37850== 1,168 bytes in 1 blocks are definitely lost in loss record 65 of 82
==37850== at 0x4C2FA3F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==37850== by 0x4C31D84: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==37850== by 0x549639F: memcached_server_list_append_with_weight (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x10E682: hrd_create_memc() (hrd_util.cpp:332)
==37850== by 0x10E7DC: hrd_publish(char const*, void*, unsigned long) (hrd_util.cpp:351)
==37850== by 0x10C53E: hrd_publish_conn_qp(hrd_ctrl_blk_t*, unsigned long, char const*) (hrd_conn.cpp:396)
==37850== by 0x10F69E: main (main.cpp:170)
==37850==
...
==37850== 2,048 bytes in 2 blocks are definitely lost in loss record 68 of 82
==37850== at 0x4C2FA3F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==37850== by 0x4C31D84: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==37850== by 0x549A09C: ??? (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x54949FF: ??? (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x5494E26: ??? (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x548DD99: memcached_fetch_result (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x548DF91: memcached_fetch (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x548F68C: memcached_get_by_key (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x548F889: memcached_get (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x10E92F: hrd_get_published(char const*, void**) (hrd_util.cpp:383)
==37850== by 0x10EBB6: hrd_wait_till_ready(char const*) (hrd_util.cpp:434)
==37850== by 0x10FA17: main (main.cpp:231)
==37850==
...
==37850== 2,048 bytes in 2 blocks are definitely lost in loss record 69 of 82
==37850== at 0x4C2FA3F: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==37850== by 0x4C31D84: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==37850== by 0x549A09C: ??? (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x54949FF: ??? (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x5494E26: ??? (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x548DD99: memcached_fetch_result (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x548DF91: memcached_fetch (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x548F68C: memcached_get_by_key (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x548F889: memcached_get (in /usr/lib/x86_64-linux-gnu/libmemcached.so.11.0.0)
==37850== by 0x10E92F: hrd_get_published(char const*, void**) (hrd_util.cpp:383)
==37850== by 0x10EBB6: hrd_wait_till_ready(char const*) (hrd_util.cpp:434)
==37850== by 0x10FA4E: main (main.cpp:234)
==37850==
...
==37850== LEAK SUMMARY:
==37850== definitely lost: 5,264 bytes in 5 blocks
...
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