https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107940
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to laurent.alfo...@linaro.org from comment #0) > This may be linked to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90787. > But, I confirm my toolchain is based on trunk (13.0), and contains the 90787 > fix. No, I don't think it's related to that in any way. valgrind and asan are both clean when running that test on x86_64-pc-linux-gnu. Where does valgrind say there are uninitialized values? Maybe the problem is in the unwinder.