Hi!
Since GCC 13 -fsanitize=hwaddress is not supported just on AArch64, but also
on x86_64 (but only with -mlam=u48 or -mlam=u57).
Ok for trunk?
2024-12-09 Jakub Jelinek <ja...@redhat.com>
PR sanitize/117960
* doc/invoke.texi (fsanitize=hwaddress): Clarify on which targets
it is supported.
--- gcc/doc/invoke.texi.jj 2024-12-09 11:37:50.282218643 +0100
+++ gcc/doc/invoke.texi 2024-12-09 13:45:32.431473662 +0100
@@ -17768,8 +17768,10 @@ the available options are shown at start
@url{https://github.com/google/sanitizers/wiki/AddressSanitizerFlags#run-time-flags}
for a list of supported options.
The option cannot be combined with @option{-fsanitize=thread} or
-@option{-fsanitize=hwaddress}. Note that the only target
-@option{-fsanitize=hwaddress} is currently supported on is AArch64.
+@option{-fsanitize=hwaddress}. Note that the only targets
+@option{-fsanitize=hwaddress} is currently supported on are x86-64
+(only with @code{-mlam=u48} or @code{-mlam=u57} options) and AArch64,
+in both cases only in ABIs with 64-bit pointers.
To get more accurate stack traces, it is possible to use options such as
@option{-O0}, @option{-O1}, or @option{-Og} (which, for instance, prevent
Jakub
