[Hunspell, Fuzz] Testcase

chrome/renderer/spellchecker/spellcheck_unittest.cc

Index: chrome/renderer/spellchecker/spellcheck_unittest.cc
diff --git a/chrome/renderer/spellchecker/spellcheck_unittest.cc b/chrome/renderer/spellchecker/spellcheck_unittest.cc
index 05986fa22e1489bcd29027ccb5c7e55778cc8fd1..fc89c86d534a7b4961e63c439c5461c0e1a6fb84 100644
--- a/chrome/renderer/spellchecker/spellcheck_unittest.cc
+++ b/chrome/renderer/spellchecker/spellcheck_unittest.cc
@@ -26,6 +26,7 @@
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/web/WebTextCheckingCompletion.h"
 #include "third_party/WebKit/public/web/WebTextCheckingResult.h"
+#include "third_party/hunspell/src/hunspell/hunspell.hxx"
 
 #define TYPOGRAPHICAL_APOSTROPHE L"\x2019"
 
@@ -84,6 +85,12 @@ class SpellCheckTest : public testing::Test {
 #endif
   }
 
+  HunspellEngine* GetHunspellEngine() {
+    // We're guaranteed this is a HunspellEngine. FOR REALZ.
+    return static_cast<HunspellEngine*>(
+        spell_check_->languages_.front()->platform_spelling_engine_.get());
+  }
+
   ~SpellCheckTest() override {}
 
   SpellCheck* spell_check() { return spell_check_.get(); }
@@ -1569,3 +1576,34 @@ TEST_F(SpellCheckTest, FillSuggestions_ThreeLanguages) {
   EXPECT_EQ(base::ASCIIToUTF16("0bar"), suggestion_results[3]);
   EXPECT_EQ(base::ASCIIToUTF16("1bar"), suggestion_results[4]);
 }
+
+TEST_F(SpellCheckTest, Suggestions_Crasher) {
+  const char kTrigger[] =
+      "R:<?xl<<?x(ml?>Ω<abuts?xºml?>b<?xe?<}\r"
+      ":'€<abuts?xml?>b<?x-?->paralleldi!pe.Tselctionp";
+
+  int misspelling_start = 0;
+  int misspelling_length = 0;
+  std::vector<base::string16> suggestions;
+
+  bool result = spell_check()->SpellCheckWord(
+      base::UTF8ToUTF16(kTrigger).c_str(), kNoOffset,
+      static_cast<int>(strlen(kTrigger)), kNoTag, &misspelling_start,
+      &misspelling_length, &suggestions);
+
+  EXPECT_NE(0, misspelling_length);
+  EXPECT_FALSE(result);
+
+  // We're guaranteed this is a HunspellEngine. FOR REALZ.
+  HunspellEngine* engine = GetHunspellEngine();
+  ASSERT_NE(nullptr, engine);
+
+  Hunspell* hunspell = engine->get_hunspell();
+  ASSERT_NE(nullptr, hunspell);
+
+  char** suggest = nullptr;
+  int suggestion_length = hunspell->suggest(&suggest, kTrigger);
+  hunspell->free_list(&suggest, suggestion_length);
+
+  LOG(ERROR) << "Length:" << suggestion_length;
+}