Bug 944202 – sci-biology/mothur-1.27.0-r1 - [meson] linearalgebra.cpp: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]

• Status: CONFIRMED
• Product: Gentoo Linux

[Description Toralf Förster 2024-11-20 19:08:45 UTC]

too long lines were shrinked:

x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -fno-diagnostics-color -Werror=lto-type-mismatch -Werror=strict-aliasing -Werror=odr -flto -DRELEASE_DATE="\"8/8/2012\"" -DVERSION="\"1.27.0\"" -DUSE_READLINE -I.  -DBIT_VERSION  -c -o kmerdb.o kmerdb.cpp
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -fno-diagnostics-color -Werror=lto-type-mismatch -Werror=strict-aliasing -Werror=odr -flto -DRELEASE_DATE="\"8/8/2012\"" -DVERSION="\"1.27.0\"" -DUSE_READLINE -I.  -DBIT_VERSION  -c -o knn.o knn.cpp
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -fno-diagnostics-color -Werror=lto-type-mismatch -Werror=strict-aliasing -Werror=odr -flto -DRELEASE_DATE="\"8/8/2012\"" -DVERSION="\"1.27.0\"" -DUSE_READLINE -I.  -DBIT_VERSION  -c -o libshuff.o libshuff.cpp
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -fno-diagnostics-color -Werror=lto-type-mismatch -Werror=strict-aliasing -Werror=odr -flto -DRELEASE_DATE="\"8/8/2012\"" -DVERSION="\"1.27.0\"" -DUSE_READLINE -I.  -DBIT_VERSION  -c -o kruskalwalliscommand.o kruskalwalliscommand.cpp
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -fno-diagnostics-color -Werror=lto-type-mismatch -Werror=strict-aliasing -Werror=odr -flto -DRELEASE_DATE="\"8/8/2012\"" -DVERSION="\"1.27.0\"" -DUSE_READLINE -I.  -DBIT_VERSION  -c -o linearalgebra.o linearalgebra.cpp
linearalgebra.cpp: In member function double LinearAlgebra::ran4(int&):
linearalgebra.cpp:1191:18: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]
 1191 |         return (*(float *)&itemp)-1.0;
      |                  ^~~~~~~~~~~~~~~

  -------------------------------------------------------------------

  This is an unstable amd64 chroot image at a tinderbox (==build bot)
  name: 23.0_desktop_systemd-20241118-110516

  UNMASKED:
    Please re-assign to ztrawhcse@ if you cannot reproduced it with regular meson.
  <dev-build/meson-9999

  The attached etc.portage.tar.xz has all details.
  -------------------------------------------------------------------

gcc-config -l:
 [1] x86_64-pc-linux-gnu-14 *
clang version 19.1.4
llvm-config: 19.1.4
Python 3.12.7
go version go1.23.3 linux/amd64
  [1]   php8.3 *
Available Ruby profiles:
  [1]   ruby32 (with Rubygems) *
Available Rust versions:
  [1]   rust-bin-1.81.0
  [2]   rust-bin-1.82.0 *
The following VMs are available for generation-2:
1)	Eclipse Temurin JDK 17.0.13_p11 [openjdk-bin-17]
*)	Eclipse Temurin JDK 21.0.5_p11 [openjdk-bin-21]
Available Java Virtual Machines:
  [1]   openjdk-bin-17 
  [2]   openjdk-bin-21  system-vm


  HEAD of ::gentoo
commit c383e9f51930d80dc47a796c049e22bc9e225d93
Author: Repository mirror & CI <[e-mail]>
Date:   Wed Nov 20 17:48:29 2024 +0000

    2024-11-20 17:48:29 UTC

emerge -qpvO =sci-biology/mothur-1.27.0-r1
[ebuild  N    ] sci-biology/mothur-1.27.0-r1  USE="readline -mpi"

[Comment 1 Toralf Förster 2024-11-20 19:08:45 UTC]

Created attachment 910864 [details]
emerge-info.txt

[Comment 2 Toralf Förster 2024-11-20 19:08:47 UTC]

Created attachment 910865 [details]
emerge-history.txt

[Comment 3 Toralf Förster 2024-11-20 19:08:48 UTC]

Created attachment 910866 [details]
environment

[Comment 4 Toralf Förster 2024-11-20 19:08:49 UTC]

Created attachment 910867 [details]
etc.clang.tar.xz

[Comment 5 Toralf Förster 2024-11-20 19:08:50 UTC]

Created attachment 910868 [details]
etc.portage.tar.xz

[Comment 6 Toralf Förster 2024-11-20 19:08:52 UTC]

Created attachment 910869 [details]
qlist-info.txt

[Comment 7 Toralf Förster 2024-11-20 19:08:53 UTC]

Created attachment 910870 [details]
sci-biology:mothur-1.27.0-r1:20241120-190344.log

[Comment 8 Toralf Förster 2024-11-20 19:08:54 UTC]

Created attachment 910871 [details]
temp.tar.xz