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| author | Florian Weimer <fweimer@redhat.com> | 2022-10-18 17:00:07 +0200 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2022-10-18 17:03:55 +0200 |
| commit | 88f4b6929c26f9240a4b0b7dcc62922f02544a09 (patch) | |
| tree | 72acb4a359d3ec56729a910386bd1a002bd69e3c /misc | |
| parent | 246f37d6b1c4c6c0a6365df8783e62e3adf208e8 (diff) | |
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Introduce <pointer_guard.h>, extracted from <sysdep.h>
This allows us to define a generic no-op version of PTR_MANGLE and
PTR_DEMANGLE. In the future, we can use PTR_MANGLE and PTR_DEMANGLE
unconditionally in C sources, avoiding an unintended loss of hardening
due to missing include files or unlucky header inclusion ordering.
In i386 and x86_64, we can avoid a <tls.h> dependency in the C
code by using the computed constant from <tcb-offsets.h>. <sysdep.h>
no longer includes these definitions, so there is no cyclic dependency
anymore when computing the <tcb-offsets.h> constants.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'misc')
| -rw-r--r-- | misc/unwind-link.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/misc/unwind-link.c b/misc/unwind-link.c index 9ae9561206..45b7886b46 100644 --- a/misc/unwind-link.c +++ b/misc/unwind-link.c @@ -23,6 +23,7 @@ #include <gnu/lib-names.h> #include <unwind-link.h> #include <libc-lock.h> +#include <pointer_guard.h> /* Statically allocate the object, so that we do not have to deal with malloc failure. __libc_unwind_link_get must not fail if libgcc_s |