From 3ae1a1837d19de42fdb276d3edabbb7c501ed65e Mon Sep 17 00:00:00 2001
From: Konstantin Varlamov <varconst@google.com>
Date: Sat, 20 Jul 2019 18:01:40 -0400
Subject: Fix GTMGoogleTestRunner triggering "NULL cString" exception in
 NSString.

---
 UnitTesting/GTMGoogleTestRunner.mm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/UnitTesting/GTMGoogleTestRunner.mm b/UnitTesting/GTMGoogleTestRunner.mm
index 0bcb500..018f815 100644
--- a/UnitTesting/GTMGoogleTestRunner.mm
+++ b/UnitTesting/GTMGoogleTestRunner.mm
@@ -86,7 +86,8 @@ class GoogleTestPrinter : public EmptyTestEventListener {
 
   virtual void OnTestPartResult(const TestPartResult &test_part_result) {
     if (!test_part_result.passed()) {
-      NSString *file = @(test_part_result.file_name());
+      const char *file_name = test_part_result.file_name();
+      NSString *file = @(file_name ? file_name : "<file name unavailable>");
       int line = test_part_result.line_number();
       NSString *summary = @(test_part_result.summary());
 
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