== This week ==

* PR49551 (2/10) - Created new patch: http://pastebin.com/PsLTgvp7 - merge_decls() calls memcpy to copy newdecl into olddecl thus overriding DECL_COMMON in olddecl which is the source of the bug. If newdecl has common/nocommon attribute set, honor it, else DECL_COMMON would be set if both olddecl and newdecl have DECL_COMMON set. - Bootstrapped on x86, tested on x86, arm - Not yet figured out why r221297 masks this bug.

* TCWG-619 (4/10) - managed to build chromium LTO on ARM, requires disabling components enabled by variable 'chromium_code'. Size of chrome executable reduces by 8 mb.

- the bug: "error out of range" appears only during LTO build of components enabled by chromium_code. Results in very few instances of the same error message when LTO build for chromium_code components.

- Disabling LTO in sandbox.gyp and passing -flto results in following error: /tmp/ccYJJbUK.ltrans25.ltrans.o:<artificial>:vtable for blink::WebDocument [clone .lto_priv.89343]: warning: relocation refers to discarded section /home/prathamesh.kulkarni/fsf-toolchain/lib/gcc/x86_64-unknown-linux-gnu/6.0.0/../../../../x86_64-unknown-linux-gnu/bin/ld.gold: error: hidden symbol '_ZN5blink11WebDocumentD1Ev' is not defined locally Also present for x86. The workaround is to pass -flto --param lto-partitions=1 as mentioned in PR57703.

- gold ICE with v8 LTO build for ARM not reproducible with master branch.

- Trying to use Martin Liska's scripts for gathering build stats: https://github.com/marxin/script-misc/blob/master/system_top.py https://github.com/marxin/script-misc/blob/master/vmstat_parser.py

* Misc (4/10) - Exams preparation - Visa application

== Next Week == - PR49551: figure out why r221297 masks the bug, write test-cases and submit patch upstream - chromium/v8 build stats - exams