https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109685
--- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Thomas Neumann <tneum...@gcc.gnu.org>: https://gcc.gnu.org/g:fd68f60c4ca5d23e4f42c447a2fd1d33030301bf commit r13-7410-gfd68f60c4ca5d23e4f42c447a2fd1d33030301bf Author: Thomas Neumann <tneum...@users.sourceforge.net> Date: Tue May 2 16:21:09 2023 +0200 release the sorted FDE array when deregistering a frame [PR109685] The atomic fastpath bypasses the code that releases the sort array which was lazily allocated during unwinding. We now check after deregistering if there is an array to free. libgcc/ChangeLog: PR libgcc/109685 * unwind-dw2-fde.c: Free sort array in atomic fast path.