selftests/rseq: Replace glibc-specific __GNUC_PREREQ with portable check

Browse source

Building the rseq selftests against musl libc fails because musl's
<features.h> does not provide the glibc-specific __GNUC_PREREQ macro:

  error: missing binary operator before token '('

Replace __GNUC_PREREQ(11, 1) with an equivalent check using __GNUC__
and __GNUC_MINOR__ directly.  This pattern is portable across all C
library implementations and is already used elsewhere in the tools/
tree (e.g., tools/include/linux/string.h).

This also allows removing the #include <features.h>, which was only
needed for __GNUC_PREREQ.

Fixes: 886ddfba93 ("selftests/rseq: Introduce thread pointer getters")
Signed-off-by: Hisam Mehboob <hisamshar@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Link: https://patch.msgid.link/20260618193724.589113-2-hisamshar@gmail.com

...

This commit is contained in:

Hisam Mehboob 2026-06-19 00:37:25 +05:00 • committed by Thomas Gleixner

parent dc59e4fea9

commit d7b2769f8d

1 changed files with 1 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

tools/testing/selftests/rseq/rseq-x86-thread-pointer.h

View file