On 1/27/21 5:48 AM, Sandro Mani wrote:
Hi
Apitrace is currently failing to build, with [1]
Test project
/builddir/build/BUILD/apitrace-37c36e66b8cfa534797ca565c22e8c30923f35d4/x86_64-redhat-linux-gnu
Start 1: libbacktrace_btest
1/6 Test #1: libbacktrace_btest ...............***Exception: SegFault 0.11 sec
unrecognized DWARF version in .debug_info at 6
Some dwz issues were mentioned in the runup to the mass rebuild, is this a related issue?
More likely it doesn't understand dwarf5. GCC changed from defaulting
from dwarf-v4 to dwarf-v5.
I don't offhand recall if apitrace has a copy of GCC's libbacktrace or
its own complete reimplementation. If it's the former, then you might
consider resyncing with GCC or picking up these changes from
gcc.gnu.org/git/gcc.git:
commit bfde774667fbce6d7d326c8a36a098138e224a95
Author: Ian Lance Taylor <iant(a)golang.org>
Date: Mon Jan 18 14:45:57 2021 -0800
libbacktrace: don't fail tests if dwz fails
* Makefile.am (%_dwz): If dwz fails, use uncompressed debug
info.
* Makefile.in: Regenerate.
* configure: Regenerate.
commit 325e70b47c6c321710c7b9c792b8fbee95cecd63
Author: Ian Lance Taylor <iant(a)golang.org>
Date: Mon Jan 18 14:38:10 2021 -0800
libbacktrace: use correct directory/filename for DWARF 5
PR debug/98716
* dwarf.c (read_v2_paths): Allocate zero entry for dirs and
filenames.
(read_line_program): Remove parameter u, change caller. Don't
subtract one from dirs and filenames index.
(read_function_entry): Don't subtract one from filenames index.
Jeff