This bug was fixed in the package gcc-4.8 - 4.8.4-2ubuntu1~14.04.4
---------------
gcc-4.8 (4.8.4-2ubuntu1~14.04.4) trusty-security; urgency=medium
* Add retpoline support for x86 via adding -mindirect-branch=,
-mindirect-branch-register, and -mfunction-return= support
(LP: #1749261)
- 0001-i386-Move-struct-ix86_frame-to-machine_function.diff,
0002-i386-Use-reference-of-struct-ix86_frame-to-avoid-cop.diff,
0003-i386-Use-const-reference-of-struct-ix86_frame-to-avo.diff,
0004-x86-Add-mindirect-branch.diff,
0005-x86-Add-mfunction-return.diff,
0006-x86-Add-mindirect-branch-register.diff,
0007-x86-Add-V-register-operand-modifier.diff,
0008-x86-Disallow-mindirect-branch-mfunction-return-with-.diff,
0009-Use-INVALID_REGNUM-in-indirect-thunk-processing.diff:
implement -mindirect-branch=<keep|thunk|thunk-inline|thunk-extern>
with attribute support, -mindirect-branch-register, and
-mfunction-return=<thunk|thunk-inline|thunk-extern> with
attribute support. Thanks to H.J. Lu.
-- Steve Beattie <sbeat...@ubuntu.com> Tue, 13 Feb 2018 10:19:48 -0800
** Changed in: gcc-4.8 (Ubuntu Trusty)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1749261
Title:
Add amd64/i386 retpoline support
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