https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96083
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:93beee71a5ba5ee97a072d94780b140ae159fd74 commit r10-9250-g93beee71a5ba5ee97a072d94780b140ae159fd74 Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed Dec 16 13:50:34 2020 +0000 libstdc++: Only use __builtin_sprintf if supported [PR 96083] Clang doesn't support __builtin_sprintf, so use std::sprintf instead. libstdc++-v3/ChangeLog: PR libstdc++/96083 * include/ext/throw_allocator.h: Use __has_builtin to check for __builtin_sprintf support, and use std::sprintf if necessary. (cherry picked from commit 96d9670e88333d8896a5d2f2bb0403c1e2ad19ab)