Rollup merge of #139113 - folkertdev:sanitizer-unstable-book-check-block, r=rcvalle

unstable book: in a sanitizer example, check the code

Use some `#` directives to make sure the code checks on x86_64, and does not produce errors on other platforms. This example still used an older version of `#[naked]`, and because the snippet was ignored that was missed before.

I'm not sure when this gets built on CI exactly, so it might be worthwhile to try and build it for a non-x86_64 architecture to make sure that works. I'm not sure how to verify locally that e.g. on aarch64 this code works without errors/warnings.

try-job: aarch64-apple
try-job: x86_64-msvc-2

0 files changed, 0 insertions, 0 deletions