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-rw-r--r--101run_sandboxed.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/101run_sandboxed.cc b/101run_sandboxed.cc
index 4a897d3a..e196081f 100644
--- a/101run_sandboxed.cc
+++ b/101run_sandboxed.cc
@@ -163,7 +163,8 @@ void run_code_begin(bool should_stash_snapshots) {
   Save_callstack_depth = Callstack_depth;
   Callstack_depth = Initial_callstack_depth;
   Trace_stream = new trace_stream;
-  Trace_stream->collect_depth = Save_trace_stream->collect_depth;
+  if (Save_trace_stream)
+    Trace_stream->collect_depth = Save_trace_stream->collect_depth;
 }
 
 void run_code_end() {