xtbopt.xyz output broken

[lmseidler]

Describe the bug
I compiled most current xtb commit on my machine:

OS: EndeavourOS Linux x86_64
Host: OptiPlex Micro Plus 7020
Kernel: 6.18.5-arch1-1
CPU: Intel i7-14700 (28) @ 5.300GHz
GPU: Intel Raptor Lake-S GT1 [UHD Graphics 770]
Memory: 31772MiB

using conda environment set up using GNU-12 compilers. Confirmed also on other machines with the same compilers and build command. I didn't manage to compile it using Intel compilers.
Running a geometry optimization on any molecule (xyz or coord input) yields broken/scrambled element symbol outputs in every file.

To Reproduce
Steps to reproduce the behaviour:

1. Setup using meson 1.7.1 / gcc 12.4.0 and meson setup build --buildtype release -Dfortran_link_args="-fopenmp"
2. ninja -C build install or cd build && ninja and use the built xtb binary from that dir.
3. Run xtb <input file> --opt on any input file, e.g. H2O:

$coord
    0.00000000000000      0.00000000034546      0.18900383618455  O
    0.00000000000000      1.45674735348811     -0.88650486059828  H
   -0.00000000000000     -1.45674735383357     -0.88650486086986  H
$end

Result e.g. in xtbopt.coord:

$coord
       -0.00000000000000        0.00000000008855        0.18914784510570      O
        0.00000000000000        1.45945746165159       -0.88657686515346      `
        0.00000000000000       -1.45945746174015       -0.88657686523582      �n~!
$end

Same also e.g. in xtbtopo.mol.

Expected behaviour
Element symbols should be human readable.

[foxtran]

That is known issue with gcc 12. Please, use another version of compiler, preferably, latest GCC 15.2.

[foxtran]

Possible fix #1292

[lmseidler]

#1292 doesn't fix the problem for me

edit: def related to gnu-12 though