RSEQ_THREAD_AREA_ALLOC_SIZE
assert(!auxv_rseq_align || auxv_rseq_align <= RSEQ_THREAD_AREA_ALLOC_SIZE);
assert(!auxv_rseq_feature_size || auxv_rseq_feature_size <= RSEQ_THREAD_AREA_ALLOC_SIZE);
char dummy[RSEQ_THREAD_AREA_ALLOC_SIZE];