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From: "wilco at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/94502] [aarch64] Missing LR register location in FDE
Date: Wed, 08 Apr 2020 14:20:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94502

--- Comment #4 from Wilco <wilco at gcc dot gnu.org> ---
(In reply to Luis Machado from comment #3)

> The lack of a rule for LR means GDB will assume the register is UNSPECIFI=
ED.
> Is GCC assuming this register is considered to have the same value as an
> inner frame?

Right so it's a leaf function like I suspected. The default rule has always
been to use the return register LR if it isn't stored (and that doesn't cha=
nge
if you adjust the stack). Leaf functions have always worked, so I'm surpris=
ed
you are seeing an issue.=