https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127006
--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-15 branch has been updated by Jonathan Wakely <[email protected]>: https://gcc.gnu.org/g:f680b40948a2f255f5882b07994ba92052c630a8 commit r15-11506-gf680b40948a2f255f5882b07994ba92052c630a8 Author: Jonathan Wakely <[email protected]> Date: Mon Aug 24 11:21:49 2026 +0100 libstdc++: Fix openmode for ospanstream's spanbuf [PR127006] The basic_ospanstream constructor is supposed to ensure that the basic_spanbuf is opened for output. I made a copy & paste error from the basic_ispanstream constructor. libstdc++-v3/ChangeLog: PR libstdc++/127006 * include/std/spanstream (basic_ospanstream(span, openmode)): Add correct openmode value to parameter. * testsuite/27_io/spanstream/127006.cc: New test. (cherry picked from commit c8e065ed391115f763af09004f593a3db1fa5514)
