https://gcc.gnu.org/g:2e958291ff68d9bff1092895a14b6763de56823b
commit r15-6040-g2e958291ff68d9bff1092895a14b6763de56823b
Author: Jakub Jelinek <ja...@redhat.com>
Date: Mon Dec 9 14:17:39 2024 +0100
docs: Clarify -fsanitize=hwaddress target support [PR117960]
Since GCC 13 -fsanitize=hwaddress is not supported just on AArch64, but also
on x86_64 (but only with -mlam=u48 or -mlam=u57).
2024-12-09 Jakub Jelinek <ja...@redhat.com>
PR sanitizer/117960
* doc/invoke.texi (fsanitize=hwaddress): Clarify on which targets
it is supported.
Diff:
---
gcc/doc/invoke.texi | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index daab28908684..14afd1934bd2 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -17768,8 +17768,10 @@ the available options are shown at startup of the
instrumented program. See
@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
