backtrace: Break when reaching ip of 0

All backtraces end with ip of 0 for some reason, which will be printed as 0xffffffffffffffff (we print ip - 1). Drop it to reduce noise.
Dingdh · Jan 13, 2017 · 5b92ed8 · 5b92ed8
1 parent 4579fa7
commit 5b92ed8
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/util/backtrace.hh b/util/backtrace.hh
@@ -44,6 +44,9 @@ void backtrace(Func&& func) noexcept(noexcept(func(0))) {
         if (unw_get_reg(&cursor, UNW_REG_IP, &ip) < 0) {
             break;
         }
+        if (!ip) {
+            break;
+        }
         func(ip);
     }
 }