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[patch][libgcc] FreeBSD amd64 unwind fix

From: Andreas Tobler <andreast-list at fgznet dot ch>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Thu, 2 Nov 2017 20:54:22 +0100
Subject: [patch][libgcc] FreeBSD amd64 unwind fix
Authentication-results: sourceware.org; auth=none

Hi all,

The attached patch fixes the PR 82635. I tested it on all activebranches including the gcc-6 branch where we make extensive use of thisMD_FALLBACK_FRAME_STATE_FOR macro. Namely in the libjava test suite.(Found no other suitable tests which do make use of this macro).

No regressions.

If there are no objections, I'm going to commit the patch below to allactive branches in the next days.


Thanks,
Andreas

2017-11-02  Andreas Tobler  <andreast@gcc.gnu.org>

	PR libgcc/82635
	* config/i386/freebsd-unwind.h (MD_FALLBACK_FRAME_STATE_FOR): Use a
	sysctl to determine whether we're in a trampoline.
	Keep the pattern matching method for systems without
	KERN_PROC_SIGTRAMP sysctl.

Attachment: libgcc-fbsd-unwind.diff
Description: Text document

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