diff -up chromium-63.0.3239.84/third_party/breakpad/breakpad/src/client/linux/handler/exception_handler.cc.aarch64glibc chromium-63.0.3239.84/third_party/breakpad/breakpad/src/client/linux/handler/exception_handler.cc
--- chromium-63.0.3239.84/third_party/breakpad/breakpad/src/client/linux/handler/exception_handler.cc.aarch64glibc	2017-12-12 09:56:24.469343868 -0500
+++ chromium-63.0.3239.84/third_party/breakpad/breakpad/src/client/linux/handler/exception_handler.cc	2017-12-12 09:56:38.468071095 -0500
@@ -461,7 +461,7 @@ bool ExceptionHandler::HandleSignal(int
 #if defined(__aarch64__)
   ucontext_t* uc_ptr = (ucontext_t*)uc;
   struct fpsimd_context* fp_ptr =
-      (struct fpsimd_context*)&uc_ptr->uc_mcontext.__reserved;
+      (struct fpsimd_context*)&uc_ptr->uc_mcontext.__glibc_reserved1;
   if (fp_ptr->head.magic == FPSIMD_MAGIC) {
     memcpy(&g_crash_context_.float_state, fp_ptr,
            sizeof(g_crash_context_.float_state));