[Bug d/123349] gdc: buffer overflow detected with -defaultlib= and -debuglib=

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123349

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-14 branch has been updated by Iain Buclaw
<ibuclaw@gcc.gnu.org>:

https://gcc.gnu.org/g:2b5c6d734044c76c4f9896b8112ea6c5b5000e39

commit r14-12279-g2b5c6d734044c76c4f9896b8112ea6c5b5000e39
Author: Iain Buclaw <ibuclaw@gdcproject.org>
Date:   Thu Jan 29 10:11:43 2026 +0100

    d: Fix buffer overflow detected with -defaultlib= and -debuglib= [PR123349]

            PR d/123349

    gcc/d/ChangeLog:

            * d-spec.cc (lang_specific_driver): Use xstrdup to copy -defaultlib
            and -debuglib argument, and unconditionally free the old value.

    gcc/testsuite/ChangeLog:

            * gdc.dg/driver_debuglib.d: New test.
            * gdc.dg/driver_defaultlib.d: New test.

    (cherry picked from commit a492b8c17118592061cc3834e7a169ca724440cb)