https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113450
--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Jonathan Wakely <r...@gcc.gnu.org>: https://gcc.gnu.org/g:db42a0a98916340af33338c08e6a7d328121b958 commit r14-8224-gdb42a0a98916340af33338c08e6a7d328121b958 Author: Jonathan Wakely <jwak...@redhat.com> Date: Wed Jan 17 21:40:25 2024 +0000 libstdc++: Fix std::format test for Solaris [PR113450] When int8_t is a typedef for char (rather than signed char) this test fails because it tries to format a char, which is treated differently from formatting other integral types (including signed char). Use signed char explicitly so the result doesn't depend on the non-portable definition of int8_t. libstdc++-v3/ChangeLog: PR libstdc++/113450 * testsuite/std/format/functions/format.cc: Use signed char instead of int8_t.