Valgrind warnings (libblpapi3_64.so)

[MichalStaruch]

When running valgrind --leak-check=full node service-using-blpapi.js some warnings appear, like

==1462== Warning: set address range perms: large range [0x2621a6b2f000, 0x2621c6b2f000) (noaccess)
==1462== Conditional jump or move depends on uninitialised value(s)
==1462==    at 0x7A7DAC3: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A7DB47: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A7DD36: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A7DE7D: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A7D90E: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A7D3EA: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x783E5DE: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x78232DD: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7854376: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7856441: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7840FF7: blpapi_Session_create (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7435B72: BloombergLP::blpapijs::Session::Session(std::string const&, int, std::string const&) (in /var/service-using-blpapi/node_modules/blpapi/build/Release/blpapijs.node)

or

==1462== Thread 4:
==1462== Syscall param writev(vector[...]) points to uninitialised byte(s)
==1462==    at 0x5D5E990: writev (writev.c:54)
==1462==    by 0x7A7C6A7: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A64FA3: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A5696A: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x79D14AF: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x79D17AF: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x79D1D95: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x79D3FBA: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A676AB: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A6E352: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A4D61B: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A63EEC: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==  Address 0x73dbac4 is 84 bytes inside a block of size 304 alloc'd
==1462==    at 0x4C28C20: malloc (vg_replace_malloc.c:296)
==1462==    by 0x7B68D6C: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7B02E32: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7AC0C98: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7AC0D16: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7AC17A6: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7AC2B3E: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A86129: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x7A8626B: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x79848A7: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x79D1490: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)
==1462==    by 0x79D17AF: ??? (in /var/service-using-blpapi/node_modules/blpapi/deps/blpapi/linux/libblpapi3_64.so)

Worth checking and correcting, IMO.

Environment: Debian 8.0 "Jessie" (64-bit, fully updated), node.js v0.10.33 (from https://github.com/nodesource/distributions), blpapi v0.1.13.

[apaprocki]

From what I hear from the API team, all of the issues reported by valgrind have already been fixed in later releases (v3.8.x.y). The current production version is still v3.7.9.1, but if you'd like to use the experimental one, you can swap in those C++ libraries and headers similar to what is done for the OS X build. I'll close this out once the v3.8.x.y version becomes the stable release and I verify it no longer happens.

[MichalStaruch]

@apaprocki I will rather skip experimental version, but surely verify this when new stable release is available. Thanks for the info!

[ericvw]

@apaprocki, can you verify and (hopefully) close this? Thanks.