https://sourceware.org/bugzilla/show_bug.cgi?id=22742
uc_mcontext.__reserved probably should not be considered user visible API but
unfortunate it is: it is the only way to access cpu states of some Linux
asm/sigcontext.h extensions. That said, the declaration may be
long double __reserved[256]; (used by musl)
instead of
unsigned char __reserved[4096] __attribute__((__aligned__(16))); (glibc)
to avoid dependency on a GNU variable attribute.
static bool Aarch64GetESR(ucontext_t *ucontext, u64 *esr) {
static const u32 kEsrMagic = 0x45535201;
- u8 *aux = ucontext->uc_mcontext.__reserved;
+ u8 *aux = reinterpret_cast<u8 *>(ucontext->uc_mcontext.__reserved);
while (true) {
_aarch64_ctx *ctx = (_aarch64_ctx *)aux;
if (ctx->size == 0) break;