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diff --git a/externals/breakpad/src/processor/testdata/linux_test_app.cc b/externals/breakpad/src/processor/testdata/linux_test_app.cc
new file mode 100644
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+++ b/externals/breakpad/src/processor/testdata/linux_test_app.cc
@@ -0,0 +1,85 @@
+// Copyright 2009 Google LLC
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google LLC nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Breakpad test application for Linux. When run, it generates one on-demand
+// minidump and then crashes, which should generate an on-crash minidump.
+// dump_syms can be used to extract symbol information for use in processing.
+
+// To build:
+// g++ -g -o linux_test_app -I ../../ -L../../client/linux linux_test_app.cc \
+//   -lbreakpad
+// Add -m32 to build a 32-bit executable, or -m64 for a 64-bit one
+// (assuming your environment supports it). Replace -g with -gstabs+ to
+// generate an executable with STABS symbols (needs -m32), or -gdwarf-2 for one
+// with DWARF symbols (32- or 64-bit)
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>  // Must come first
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <string>
+
+#include "client/linux/handler/exception_handler.h"
+#include "third_party/lss/linux_syscall_support.h"
+
+namespace {
+
+// google_breakpad::MinidumpCallback to invoke after minidump generation.
+static bool callback(const char* dump_path, const char* id,
+                     void* context,
+                     bool succeeded) {
+  if (succeeded) {
+    printf("dump guid is %s\n", id);
+  } else {
+    printf("dump failed\n");
+  }
+  fflush(stdout);
+
+  return succeeded;
+}
+
+static void CrashFunction() {
+  int* i = reinterpret_cast<int*>(0x45);
+  *i = 5;  // crash!
+}
+
+}  // namespace
+
+int main(int argc, char** argv) {
+  google_breakpad::ExceptionHandler eh(".", NULL, callback, NULL, true);
+  if (!eh.WriteMinidump()) {
+    printf("Failed to generate on-demand minidump\n");
+  }
+  CrashFunction();
+  printf("did not crash?\n");
+  return 0;
+}