PTAL Sergiy. Maybe the webrtc team was hit by the same breakage? CC folks.

In case the node.js builder also breaks, that's an expected orthogonal problem with the icu roll.

In case you have a fix, best would be to biggyback it onto the broken roll CL. The node builder can be fixed by omitting the icu roll. We'll solve that separately.

I don't think we've had a roll attempt with this change yet. I poked it, we'll see how that goes.

I think we are not affected. This rolled fine https://webrtc-review.googlesource.com/c/src/+/76504

Looks like this is culprit: https://chromium.googlesource.com/chromium/buildtools/+/ae5162d61ffc7b32555675447842e2313f454673.

The node.js builder that's also broken in the roll is now tracked independently  in issue  https://crbug.com/843073 

Looks like the issue is that `__attribute__((weak))` comes before `extern "C"`. If the order is reversed, GCC compiles the code just fine, although I get some linker errors locally.

CL: https://crrev.com/c/1059288

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/buildtools/+/e7546473ac906fad7bb98363307080a3c9d3069a

commit e7546473ac906fad7bb98363307080a3c9d3069a
Author: Sergiy Byelozyorov <sergiyb@chromium.org>
Date: Tue May 15 10:40:36 2018

Move extern-C before __attribute__ declarations

R=thomasanderson@chromium.org

Bug:  843050 ,  843073 
Change-Id: I424c896118fa283568b65427b60eb1a8d37beee7
[modify] https://crrev.com/e7546473ac906fad7bb98363307080a3c9d3069a/third_party/libc++abi/cxa_demangle_stub.cc

The node build is still broken and blocking the roll, but that's  issue 843073 .