Both Gcc 14 and clang support this in latest versions. Add to EAL first, then instrument flexible arrays.
[1] https://reviews.llvm.org/D148381 [2] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108896 Signed-off-by: Stephen Hemminger <step...@networkplumber.org> --- lib/eal/include/rte_compat.h | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/lib/eal/include/rte_compat.h b/lib/eal/include/rte_compat.h index 716bc0361640..6bf6b0baaccf 100644 --- a/lib/eal/include/rte_compat.h +++ b/lib/eal/include/rte_compat.h @@ -68,6 +68,16 @@ _Pragma("GCC diagnostic pop") __attribute__((section(".text.internal"))) #endif +/* + * Used to by ASAN bounds checker for flexible arrays + * Supported by Gcc >= 14 and clang >=18 + */ +#if __has_attribute(__element_count__) +# define __rte_counted_by(member) __attribute__((__element_count__(member))) +#else +# define __rte_counted_by(member) +#endif + #endif #ifdef __cplusplus -- 2.43.0
