1 files changed, 8 insertions, 3 deletions
diff --git a/libbacktrace/UnwindPtrace.cpp b/libbacktrace/UnwindPtrace.cpp
index 732dae8..7ba8775 100644
--- a/libbacktrace/UnwindPtrace.cpp
+++ b/libbacktrace/UnwindPtrace.cpp
@@ -14,17 +14,17 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "libbacktrace"
-
 #include <backtrace/Backtrace.h>
 #include <backtrace/BacktraceMap.h>
 
 #include <sys/types.h>
 #include <string.h>
+#include <ucontext.h>
 
 #include <libunwind.h>
 #include <libunwind-ptrace.h>
 
+#include "BacktraceLog.h"
 #include "UnwindMap.h"
 #include "UnwindPtrace.h"
 
@@ -46,7 +46,12 @@ UnwindPtrace::~UnwindPtrace() {
   }
 }
 
-bool UnwindPtrace::Unwind(size_t num_ignore_frames) {
+bool UnwindPtrace::Unwind(size_t num_ignore_frames, ucontext_t* ucontext) {
+  if (ucontext) {
+    BACK_LOGW("Unwinding from a specified context not supported yet.");
+    return false;
+  }
+
   addr_space_ = unw_create_addr_space(&_UPT_accessors, 0);
   if (!addr_space_) {
     BACK_LOGW("unw_create_addr_space failed.");