--- a/sysdeps/unix/sysv/linux/x86/longjmp.c
+++ b/sysdeps/unix/sysv/linux/x86/longjmp.c
@@ -29,6 +29,7 @@
 
 /* Assert that the priv field in struct pthread_unwind_buf has space
    to store shadow stack pointer.  */
+#if defined SHADOW_STACK_POINTER_OFFSET && SHADOW_STACK_POINTER_OFFSET > 0
 _Static_assert ((offsetof (struct pthread_unwind_buf, priv)
                 <= SHADOW_STACK_POINTER_OFFSET)
                && ((offsetof (struct pthread_unwind_buf, priv)
@@ -37,3 +38,4 @@
                        + SHADOW_STACK_POINTER_SIZE)),
                "Shadow stack pointer is not within private storage "
                "of pthread_unwind_buf.");
+#endif