Fixed StringIndexOutOfBoundsException in the lexer

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MOS_MIGRATED_REVID=138387292

1 files changed, 6 insertions, 0 deletions

diff --git a/src/test/java/com/google/devtools/build/lib/syntax/LexerTest.java b/src/test/java/com/google/devtools/build/lib/syntax/LexerTest.java
index db49b4ed2a..311922e429 100644
--- a/src/test/java/com/google/devtools/build/lib/syntax/LexerTest.java
+++ b/src/test/java/com/google/devtools/build/lib/syntax/LexerTest.java
@@ -483,4 +483,10 @@ public class LexerTest {
     assertEquals(s.length(), lastErrorLocation.getEndOffset());
     assertEquals("STRING(unterminated) NEWLINE EOF", values(tokens(s)));
   }
+
+  @Test
+  public void testUnterminatedRawStringWithEscapingError() throws Exception {
+    assertEquals("STRING NEWLINE EOF", names(tokens("r'\\")));
+    assertEquals("/some/path.txt:1: unterminated string literal at eof", lastError);
+  }
 }