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From: "aoliva at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/109411] missing debug information with statement
 frontiers
Date: Fri, 27 Oct 2023 09:47:00 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109411

--- Comment #2 from Alexandre Oliva <aoliva at gcc dot gnu.org> ---
AFAICT there are mentions to test.h line numbers both with and without
-gstatement-frontiers, and the mentions are the same.  The problem is two-f=
old:

- there aren't any stmt markers for the lines in the template instantiation
from test.h.  absent stmt markers, is_stmt remains at zero throughout the
function, except for its entry on line 6

- GDB appears to disregard !is_stmt locs entirely when setting breakpoints

I suppose getting markers for the instantiation would fix the problem, but I
don't have any insight into why they're not generated.=