Program: 85604
Project: 85604
Buggy source:
/** 
 * Return a representation of the pattern used by this instance for formatting and parsing.  The format is similar to, but not the same as the format recognized by the  {@link Builder.pattern()} and {@link Builder.localizedPattern()} methods.  The patternreturned by this method is localized, any currency signs expressed are literally, and optional fractional decimal places are shown grouped in parentheses. 
 */
public String pattern(){
synchronized (numberFormat) {
    StringBuilder groups=new StringBuilder();
    for (    int group : decimalGroups) {
      groups.append("String_Node_Str").append(Strings.repeat("String_Node_Str",group)).append("String_Node_Str");
    }
    DecimalFormatSymbols s=numberFormat.getDecimalFormatSymbols();
    String digit=String.valueOf(s.getDigit());
    String exp=s.getExponentSeparator();
    String groupSep=String.valueOf(s.getGroupingSeparator());
    String moneySep=String.valueOf(s.getMonetaryDecimalSeparator());
    String zero=String.valueOf(s.getZeroDigit());
    String boundary=String.valueOf(s.getPatternSeparator());
    String minus=String.valueOf(s.getMinusSign());
    String decSep=String.valueOf(s.getDecimalSeparator());
    String prefixAndNumber="String_Node_Str" + boundary + "String_Node_Str"+ "String_Node_Str"+ Matcher.quoteReplacement(digit + zero + groupSep+ decSep+ moneySep)+ "String_Node_Str"+ "String_Node_Str"+ Matcher.quoteReplacement(digit + zero + groupSep+ decSep+ moneySep+ exp)+ "String_Node_Str";
    return numberFormat.toLocalizedPattern().replaceAll(prefixAndNumber,"String_Node_Str" + groups.toString()).replaceAll("String_Node_Str",Matcher.quoteReplacement(coinCode())).replaceAll("String_Node_Str",Matcher.quoteReplacement(coinSymbol()));
  }
}

Fixed version (ground truth):
/** 
 * Return a representation of the pattern used by this instance for formatting and parsing.  The format is similar to, but not the same as the format recognized by the  {@link Builder#pattern} and {@link Builder#localizedPattern} methods.  The patternreturned by this method is localized, any currency signs expressed are literally, and optional fractional decimal places are shown grouped in parentheses. 
 */
public String pattern(){
synchronized (numberFormat) {
    StringBuilder groups=new StringBuilder();
    for (    int group : decimalGroups) {
      groups.append("String_Node_Str").append(Strings.repeat("String_Node_Str",group)).append("String_Node_Str");
    }
    DecimalFormatSymbols s=numberFormat.getDecimalFormatSymbols();
    String digit=String.valueOf(s.getDigit());
    String exp=s.getExponentSeparator();
    String groupSep=String.valueOf(s.getGroupingSeparator());
    String moneySep=String.valueOf(s.getMonetaryDecimalSeparator());
    String zero=String.valueOf(s.getZeroDigit());
    String boundary=String.valueOf(s.getPatternSeparator());
    String minus=String.valueOf(s.getMinusSign());
    String decSep=String.valueOf(s.getDecimalSeparator());
    String prefixAndNumber="String_Node_Str" + boundary + "String_Node_Str"+ "String_Node_Str"+ Matcher.quoteReplacement(digit + zero + groupSep+ decSep+ moneySep)+ "String_Node_Str"+ "String_Node_Str"+ Matcher.quoteReplacement(digit + zero + groupSep+ decSep+ moneySep+ exp)+ "String_Node_Str";
    return numberFormat.toLocalizedPattern().replaceAll(prefixAndNumber,"String_Node_Str" + groups.toString()).replaceAll("String_Node_Str",Matcher.quoteReplacement(coinCode())).replaceAll("String_Node_Str",Matcher.quoteReplacement(coinSymbol()));
  }
}