Reproducible example for tulipcc#26

Signed-off-by: Sebastian Zarnekow <[email protected]>
szarnekow · May 4, 2020 · a5266b2 · a5266b2
1 parent e6a0b4f
commit a5266b2
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Showing 2 changed files with 17 additions and 2 deletions.
diff --git a/src/main/javacc/ConditionParser.jj b/src/main/javacc/ConditionParser.jj
@@ -38,7 +38,7 @@
  */
 
 options {
-  JAVA_UNICODE_ESCAPE = true;
+  JAVA_UNICODE_ESCAPE = false;
 }
 
 PARSER_BEGIN(ConditionParser)

diff --git a/src/test/java/com/helger/pgcc/utils/ConditionParserTest.java b/src/test/java/com/helger/pgcc/utils/ConditionParserTest.java
@@ -35,6 +35,7 @@
 
 import static org.junit.Assert.assertEquals;
 
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -49,10 +50,14 @@ public final class ConditionParserTest
 {
   private static void _test (final String input, final boolean expectedValue) throws ParseException
   {
-    final ConditionParser cp = new ConditionParser (input);
     final Map <String, Object> values = new HashMap <> ();
     values.put ("F", Boolean.FALSE);
     values.put ("T", Boolean.TRUE);
+    _test(input, values, expectedValue);
+  }
+
+  private static void _test(String input, Map<String, Object> values, boolean expectedValue) throws ParseException {
+    final ConditionParser cp = new ConditionParser (input);
     final boolean value = cp.CompilationUnit (values);
     assertEquals (Boolean.valueOf (expectedValue), Boolean.valueOf (value));
   }
@@ -69,4 +74,14 @@ public void testBasic () throws ParseException
     _test ("T && T", true);
     _test ("unknown", false);
   }
+
+  @Test
+  public void testBufferExpansion () throws ParseException
+  {
+    char[] a = new char[2048 - 4 /* open + close of the comment */];
+    Arrays.fill(a, 'a');
+    char[] b = new char[4096 - 4 + 1 /* force the buffer to expand and wrap around */];
+    Arrays.fill(b, 'b');
+    _test (String.format("/*%s*/\n/*%s*/\nT || F", String.valueOf(a), String.valueOf(b)), true);
+  }
 }