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-rw-r--r--cpp/tangle/030tangle.cc9
1 files changed, 9 insertions, 0 deletions
diff --git a/cpp/tangle/030tangle.cc b/cpp/tangle/030tangle.cc
index fc40880f..bbd0e178 100644
--- a/cpp/tangle/030tangle.cc
+++ b/cpp/tangle/030tangle.cc
@@ -233,6 +233,11 @@ void emit_test(const string& name, list<string>& lines, list<string>& result) {
       result.push_back("  Hide_warnings = true;");
       lines.pop_front();
     }
+    if (starts_with(lines.front(), "dump ")) {
+      string line = lines.front().substr(strlen("dump "));
+      result.push_back("  Trace_stream->dump_layer = \""+line+"\";");
+      lines.pop_front();
+    }
     result.push_back("  "+Toplevel+"(\""+input_lines(lines)+"\");");
     if (!lines.empty() && lines.front()[0] == '+')
       result.push_back("  CHECK_TRACE_CONTENTS(\""+expected_in_trace(lines)+"\");");
@@ -268,6 +273,10 @@ bool is_warn(const string& line) {
   return line == "hide warnings";
 }
 
+bool is_dump(const string& line) {
+  return starts_with(line, "dump ");
+}
+
 string input_lines(list<string>& hunk) {
   string result;
   while (!hunk.empty() && is_input(hunk.front())) {