From: Daniel Jasper <djasper@google.com>
Date: Sat, 17 Sep 2016 07:20:36 +0000 (+0000)
Subject: clang-format: [JS] Fix a crash in handledTemplateStrings.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=72aeae9a2f042f160e700b97fde61be3e0adc133;p=clang

clang-format: [JS] Fix a crash in handledTemplateStrings.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@281816 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Format/FormatTokenLexer.cpp b/lib/Format/FormatTokenLexer.cpp
index 8c795fb4d6..c9670aeff6 100644
--- a/lib/Format/FormatTokenLexer.cpp
+++ b/lib/Format/FormatTokenLexer.cpp
@@ -235,6 +235,8 @@ void FormatTokenLexer::handleTemplateStrings() {
     return;
   }
   if (BacktickToken->is(tok::r_brace)) {
+    if (StateStack.size() == 1)
+      return;
     StateStack.pop();
     if (StateStack.top() != LexerState::TEMPLATE_STRING)
       return;
diff --git a/unittests/Format/FormatTestJS.cpp b/unittests/Format/FormatTestJS.cpp
index 528986a0c9..9ccb75b629 100644
--- a/unittests/Format/FormatTestJS.cpp
+++ b/unittests/Format/FormatTestJS.cpp
@@ -1253,6 +1253,9 @@ TEST_F(FormatTestJS, NestedTemplateStrings) {
   verifyFormat(
       "var x = `<ul>${xs.map(x => `<li>${x}</li>`).join('\\n')}</ul>`;");
   verifyFormat("var x = `he${({text: 'll'}.text)}o`;");
+
+  // Crashed at some point.
+  verifyFormat("}");
 }
 
 TEST_F(FormatTestJS, TaggedTemplateStrings) {