test/jdk/tools/launcher/ArgFileSyntax.java

rev 51884 : 8210810: Escaped character at specific position in argument file is not handled properly
Contributed-by: Bo Zhang <zhangbodut@gmail.com>
Reviewed-by: henryjen

*** 38,47 ****
--- 38,50 ----
  import java.util.Map;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  public class ArgFileSyntax extends TestHelper {
+     // Buffer size in args.c readArgFile() method
+     private static final int ARG_FILE_PARSER_BUF_SIZE = 4096;
+ 
      private File createArgFile(List<String> lines) throws IOException {
          File argFile = new File("argfile");
          argFile.delete();
          createAFile(argFile, lines);
          return argFile;
*** 184,208 ****
  
          // long lines
          String bag = "-Dgarbage=";
          String ver = "-version";
          // a token 8192 long
!         char[] data = new char[8192 - bag.length()];
          Arrays.fill(data, 'O');
          List<String> scratch = new ArrayList<>();
          scratch.add("-Xmx32m");
          scratch.add(bag + String.valueOf(data));
          scratch.add(ver);
          rv.add(Collections.nCopies(2, scratch));
  
!         data = new char[8192 + 1024];
          Arrays.fill(data, 'O');
          scratch = new ArrayList<>();
          scratch.add(bag + String.valueOf(data));
          scratch.add(ver);
          rv.add(Collections.nCopies(2, scratch));
  
          return rv;
      }
  
      // ensure the arguments in the file are read in correctly
      private void verifyParsing(List<String> lines, List<String> args) throws IOException {
--- 187,221 ----
  
          // long lines
          String bag = "-Dgarbage=";
          String ver = "-version";
          // a token 8192 long
!         char[] data = new char[2*ARG_FILE_PARSER_BUF_SIZE - bag.length()];
          Arrays.fill(data, 'O');
          List<String> scratch = new ArrayList<>();
          scratch.add("-Xmx32m");
          scratch.add(bag + String.valueOf(data));
          scratch.add(ver);
          rv.add(Collections.nCopies(2, scratch));
  
!         data = new char[2*ARG_FILE_PARSER_BUF_SIZE + 1024];
          Arrays.fill(data, 'O');
          scratch = new ArrayList<>();
          scratch.add(bag + String.valueOf(data));
          scratch.add(ver);
          rv.add(Collections.nCopies(2, scratch));
  
+         // 8210810: position escaping character at boundary
+         // reserve space for quote and backslash
+         data = new char[ARG_FILE_PARSER_BUF_SIZE - bag.length() - 2];
+         Arrays.fill(data, 'O');
+         scratch = new ArrayList<>();
+         String filling = String.valueOf(data);
+         scratch.add(bag + "'" + filling + "\\\\aaa\\\\'");
+         scratch.add(ver);
+         rv.add(List.of(scratch, List.of(bag + filling + "\\aaa\\", ver)));
+ 
          return rv;
      }
  
      // ensure the arguments in the file are read in correctly
      private void verifyParsing(List<String> lines, List<String> args) throws IOException {