diff options
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/async/arch/async_posix.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/crypto/async/arch/async_posix.h b/crypto/async/arch/async_posix.h index eeb7774512..57da6e211f 100644 --- a/crypto/async/arch/async_posix.h +++ b/crypto/async/arch/async_posix.h @@ -36,6 +36,18 @@ */ # define USE_SWAPCONTEXT # endif +# if defined(__aarch64__) && defined(__clang__) \ + && defined(__ARM_FEATURE_BTI_DEFAULT) && __ARM_FEATURE_BTI_DEFAULT == 1 +/* + * setjmp/longjmp don't currently work with BTI on all libc implementations + * when compiled by clang. This is because clang doesn't put a BTI after the + * call to setjmp where it returns the second time. This then fails on libc + * implementations - notably glibc - which use an indirect jump to there. + * So use the swapcontext implementation, which does work. + * See https://github.com/llvm/llvm-project/issues/48888. + */ +# define USE_SWAPCONTEXT +# endif # include <ucontext.h> # ifndef USE_SWAPCONTEXT # include <setjmp.h> |