toolchain_gcc/gcc-4.9/libgcc/config/i386, branch master

gcc: backport an upstream patch to make it work with newer glibc.

2018-04-24T21:30:04+00:00

Newer glibc removes 'struct' tag from ucontext_t. Because of this, gcc
failed to bootstrap with newer glibc. This patch from upstream fixes
that.

BUG=chromium:834385
TEST=sudo emerge sys-devel/gcc passes with newer glibc installed.

commit 14c2f22a1877f6b60a2f7c2f83ffb032759456a6
Author: jsm28 
Date:   Tue Jul 4 10:22:56 2017 +0000

    Use ucontext_t not struct ucontext in linux-unwind.h files.

    Current glibc no longer gives the ucontext_t type the tag struct
    ucontext, to conform with POSIX namespace rules.  This requires
    various linux-unwind.h files in libgcc, that were previously using
    struct ucontext, to be fixed to use ucontext_t instead.  This is
    similar to the removal of the struct siginfo tag from siginfo_t some
    years ago.

    This patch changes those files to use ucontext_t instead.  As the
    standard name that should be unconditionally safe, so this is not
    restricted to architectures supported by glibc, or conditioned on the
    glibc version.

    Tested compilation together with current glibc with glibc's
    build-many-glibcs.py.

Change-Id: I433dd983b8d18c538d96486f7362b953ece3bfb8

Unify ChromeOS and Android versions of GCC.

2016-02-26T16:25:55+00:00

This CL updates Android's GCC to match ChromeOS's GCC (with
appropriate patches applied in both places to make sure no
cherry-picked changes are lost).

Change-Id: I390140c449b0e5df9ee78a06268319c8c510302f

Synchronize with google/gcc-4_9 to r224707 (from r214835)

2015-06-29T17:56:28+00:00

Change-Id: I3d6f06fc613c8f8b6a82143dc44b7338483aac5d

[4.9] Refresh GCC 4.9 to the 20140514 snapshot.

2014-05-18T00:12:35+00:00

For critical bug fixes including devirtualization and codegen.

Change-Id: I8138d3dc408fc12db5eecb01d2753d39219712f2

Initial checkin of GCC 4.9.0 from trunk (r208799).

2014-03-26T05:37:19+00:00

Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba