compiler_attributes.h: Support no_sanitize_undefined check with GCC 4

UBSAN is supported since GCC 4.9, which unfortunately did not yet have
__has_attribute(). To work around, the __GCC4_has_attribute workaround
requires defining which compiler version supports the given attribute.

In the case of no_sanitize_undefined, it is the first version that
supports UBSAN, which is GCC 4.9.

Reported-by: kernel test robot <[email protected]>
Signed-off-by: Marco Elver <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Reviewed-by: Miguel Ojeda <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]

0 files changed, 0 insertions, 0 deletions