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From: "gcc.gnu.org+lufm at davidak dot de" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/108854] New: tbb-2021.8.0 fails on i686-linux (32-bit)
Date: Sun, 19 Feb 2023 23:53:50 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108854

            Bug ID: 108854
           Summary: tbb-2021.8.0 fails on i686-linux (32-bit)
           Product: gcc
           Version: 11.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gcc.gnu.org+lufm at davidak dot de
  Target Milestone: ---

Created attachment 54490
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D54490&action=3Dedit
full build log

Hello,

i tried to build tbb_2021_8 for i686-linux platform on x86_64-linux.

The build fails and the log said i should create a bug report here.

I'm not a developer and never used gcc manually, so please be patient with =
me.

I don't know how to get the "preprocessed file (*.i*) that triggers the bug=
",
but otherwise you should have all requested information.

I added those flags to the build you see the log of in the attachment:

  # For 32-bit build
  cmakeFlags =3D [ "-DCMAKE_CXX_FLAGS=3D-m32" ];

  NIX_CFLAGS_COMPILE =3D [ "-Wall -Wextra -fno-strict-aliasing -fwrapv
-fno-aggressive-loop-optimizations -fsanitize=3Dundefined" ];


You can reproduce the issue using the Nix package manager and this command:

nix-build
https://github.com/davidak/nixpkgs/archive/refs/heads/tbb-split-32-bit-fix.=
zip
--system i686-linux -A tbb_2021_8


Downstream issue: https://github.com/oneapi-src/oneTBB/issues/1030 (maybe t=
he
issue is in their code)

The code: https://github.com/oneapi-src/oneTBB/tree/v2021.8.0

Tested on NixOS 22.11.2620.de5448dab58
with Intel Core i9 9900K=