diff --git a/handler/handler.gyp b/handler/handler.gyp
index 50479828..1f8fd751 100644
--- a/handler/handler.gyp
+++ b/handler/handler.gyp
@@ -147,6 +147,7 @@
           'dependencies': [
             '../client/client.gyp:crashpad_client',
             '../test/test.gyp:crashpad_test',
+            '../third_party/gtest/gtest.gyp:gtest',
             '../third_party/mini_chromium/mini_chromium.gyp:base',
             '../util/util.gyp:crashpad_util',
           ],
diff --git a/handler/win/crash_other_program.cc b/handler/win/crash_other_program.cc
index 389aee1f..93a3a07a 100644
--- a/handler/win/crash_other_program.cc
+++ b/handler/win/crash_other_program.cc
@@ -20,6 +20,7 @@
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "client/crashpad_client.h"
+#include "gtest/gtest.h"
 #include "test/test_paths.h"
 #include "test/win/child_launcher.h"
 #include "util/file/file_io.h"
@@ -93,6 +94,10 @@ int CrashOtherProgram(int argc, wchar_t* argv[]) {
       test_executable.DirName().Append(L"hanging_program.exe").value();
   ChildLauncher child(child_test_executable, argv[1]);
   child.Start();
+  if (testing::Test::HasFatalFailure()) {
+    LOG(ERROR) << "failed to start child";
+    return EXIT_FAILURE;
+  }
 
   // Wait until it's ready.
   char c;
diff --git a/snapshot/win/exception_snapshot_win_test.cc b/snapshot/win/exception_snapshot_win_test.cc
index e2776964..286e7a6f 100644
--- a/snapshot/win/exception_snapshot_win_test.cc
+++ b/snapshot/win/exception_snapshot_win_test.cc
@@ -148,7 +148,7 @@ void TestCrashingChild(const base::string16& directory_modification) {
                   L"_crashing_child.exe")
           .value();
   ChildLauncher child(child_test_executable, pipe_name);
-  child.Start();
+  ASSERT_NO_FATAL_FAILURE(child.Start());
 
   // The child tells us (approximately) where it will crash.
   WinVMAddress break_near_address;
@@ -256,7 +256,7 @@ void TestDumpWithoutCrashingChild(
                   L"_dump_without_crashing.exe")
           .value();
   ChildLauncher child(child_test_executable, pipe_name);
-  child.Start();
+  ASSERT_NO_FATAL_FAILURE(child.Start());
 
   // The child tells us (approximately) where it will capture a dump.
   WinVMAddress dump_near_address;
diff --git a/snapshot/win/extra_memory_ranges_test.cc b/snapshot/win/extra_memory_ranges_test.cc
index 49d835f0..a012027b 100644
--- a/snapshot/win/extra_memory_ranges_test.cc
+++ b/snapshot/win/extra_memory_ranges_test.cc
@@ -53,7 +53,7 @@ void TestExtraMemoryRanges(TestType type,
                   L"_extra_memory_ranges.exe")
           .value();
   ChildLauncher child(child_test_executable, L"");
-  child.Start();
+  ASSERT_NO_FATAL_FAILURE(child.Start());
 
   // Wait for the child process to indicate that it's done setting up its
   // annotations via the CrashpadInfo interface.
diff --git a/snapshot/win/pe_image_annotations_reader_test.cc b/snapshot/win/pe_image_annotations_reader_test.cc
index 02a61232..a20e986b 100644
--- a/snapshot/win/pe_image_annotations_reader_test.cc
+++ b/snapshot/win/pe_image_annotations_reader_test.cc
@@ -57,7 +57,7 @@ void TestAnnotationsOnCrash(TestType type,
                   L"_simple_annotations.exe")
           .value();
   ChildLauncher child(child_test_executable, L"");
-  child.Start();
+  ASSERT_NO_FATAL_FAILURE(child.Start());
 
   // Wait for the child process to indicate that it's done setting up its
   // annotations via the CrashpadInfo interface.
diff --git a/snapshot/win/process_snapshot_win_test.cc b/snapshot/win/process_snapshot_win_test.cc
index 75e6e708..a0e5cef4 100644
--- a/snapshot/win/process_snapshot_win_test.cc
+++ b/snapshot/win/process_snapshot_win_test.cc
@@ -46,7 +46,7 @@ void TestImageReaderChild(const base::string16& directory_modification) {
                   L"_image_reader.exe")
           .value();
   ChildLauncher child(child_test_executable, done_uuid.ToString16());
-  child.Start();
+  ASSERT_NO_FATAL_FAILURE(child.Start());
 
   char c;
   ASSERT_TRUE(
diff --git a/test/win/child_launcher.h b/test/win/child_launcher.h
index 22463fa5..6674efe2 100644
--- a/test/win/child_launcher.h
+++ b/test/win/child_launcher.h
@@ -39,6 +39,9 @@ class ChildLauncher {
 
   //! \brief Starts the child process, after which the handle functions below
   //!     will be valid.
+  //!
+  //! Errors are signaled via gtest assertions. This method may be invoked via
+  //! `ASSERT_NO_FATAL_FAILURE()` to assert that it succeeds.
   void Start();
 
   //! \brief Waits for the child process to exit.
diff --git a/util/win/process_info_test.cc b/util/win/process_info_test.cc
index 54459424..322a987f 100644
--- a/util/win/process_info_test.cc
+++ b/util/win/process_info_test.cc
@@ -151,7 +151,7 @@ void TestOtherProcess(const base::string16& directory_modification) {
   AppendCommandLineArgument(done_uuid.ToString16(), &args);
 
   ChildLauncher child(child_test_executable, args);
-  child.Start();
+  ASSERT_NO_FATAL_FAILURE(child.Start());
 
   // The child sends us a code address we can look up in the memory map.
   WinVMAddress code_address;