On Tue, Jun 30, 2026 at 7:36 AM H.J. Lu <[email protected]> wrote: > > On Wed, Jun 17, 2026 at 6:44 AM H.J. Lu <[email protected]> wrote: > > > > Documentation of __stack_chk_guard > > > > @deftypefn {Target Hook} tree TARGET_STACK_PROTECT_GUARD (void) > > This hook returns a @code{DECL} node for the external variable to use > > for the stack protection guard. This variable is initialized by the > > runtime to some random value and is used to initialize the guard value > > that is placed at the top of the local stack frame. The type of this > > variable must be @code{ptr_type_node}. > > > > The default version of this hook creates a variable called > > @samp{__stack_chk_guard}, which is normally defined in @file{libgcc2.c}. > > @end deftypefn > > > > was added by > > > > commit 7d69de618e732d343228a07d797a30e39a6363f4 > > Author: Richard Henderson <[email protected]> > > AuthorDate: Mon Jun 27 00:41:16 2005 -0700 > > Commit: Jakub Jelinek <[email protected]> > > CommitDate: Mon Jun 27 09:41:16 2005 +0200 > > > > c-cppbuiltin.c (c_cpp_builtins): Add __SSP_ALL__ and __SSP__. > > > > __stack_chk_guard was moved to libssp later by > > > > commit 77008252819720c987f11b3dade670e2b3ba09b8 > > Author: Jakub Jelinek <[email protected]> > > AuthorDate: Sat Jul 2 10:52:21 2005 +0200 > > Commit: Jakub Jelinek <[email protected]> > > CommitDate: Sat Jul 2 10:52:21 2005 +0200 > > > > Makefile.def (target_modules): Add libssp. > > > > Its documentation became stale. Update __stack_chk_guard type to > > uintptr_t if it is a global symbol and its normal location to libssp. > > > > PR libgcc/125190 > > * target.def (stack_protect_guard): __stack_chk_guard type is > > uintptr_t if it is a global symbol. It is normally defined in > > libssp. > > (stack_protect_guard_symbol_p): It is in libssp. > > * targhooks.cc (stack_chk_guard_decl): Likewise. > > * doc/tm.texi: Regenerated. > > > > > > -- > > H.J. > > PING: > > https://patchwork.sourceware.org/project/gcc/patch/came9ropjnr5ormxpkze3cphqjjoaut7yptq8rxnnwpyjp_m...@mail.gmail.com/ > > -- > H.J.
-- H.J.
