Program: 64395
Project: 64395
Buggy source:
/** 
 * Executes the task.
 */
public void execute() throws BuildException {
  if (srcDir == null) {
    throw new BuildException("String_Node_Str");
  }
  if (!srcDir.exists()) {
    throw new BuildException("String_Node_Str");
  }
  if (!srcDir.isDirectory()) {
    throw new BuildException("String_Node_Str");
  }
  if (destDir != null) {
    if (!destDir.exists()) {
      throw new BuildException("String_Node_Str");
    }
    if (!destDir.isDirectory()) {
      throw new BuildException("String_Node_Str");
    }
  }
  project.log("String_Node_Str" + "String_Node_Str" + (addcr == -1 ? "String_Node_Str" : addcr == 0 ? "String_Node_Str" : "String_Node_Str") + "String_Node_Str"+ (addtab == -1 ? "String_Node_Str" : addtab == 0 ? "String_Node_Str" : "String_Node_Str")+ "String_Node_Str"+ (ctrlz == -1 ? "String_Node_Str" : ctrlz == 0 ? "String_Node_Str" : "String_Node_Str"),"String_Node_Str",project.MSG_VERBOSE);
  DirectoryScanner ds=super.getDirectoryScanner(srcDir);
  String[] files=ds.getIncludedFiles();
  try {
    for (int i=0; i < files.length; i++) {
      File srcFile=new File(srcDir,files[i]);
      int count=(int)srcFile.length();
      byte indata[]=new byte[count];
      try {
        FileInputStream inStream=new FileInputStream(srcFile);
        inStream.read(indata);
        inStream.close();
      }
 catch (      IOException e) {
        throw new BuildException(e);
      }
      int cr=0;
      int lf=0;
      int tab=0;
      for (int k=0; k < count; k++) {
        byte c=indata[k];
        if (c == '\r')         cr++;
        if (c == '\n')         lf++;
        if (c == '\t')         tab++;
      }
      boolean eof=((count > 0) && (indata[count - 1] == 0x1A));
      project.log(srcFile + "String_Node_Str" + count+ "String_Node_Str"+ cr+ "String_Node_Str"+ lf+ "String_Node_Str"+ tab+ "String_Node_Str"+ eof,"String_Node_Str",project.MSG_VERBOSE);
      int outsize=count;
      if (addcr != 0)       outsize-=cr;
      if (addcr == +1)       outsize+=lf;
      if (addtab == -1)       outsize+=tab * 7;
      if (ctrlz == +1)       outsize+=1;
      byte outdata[]=new byte[outsize];
      int o=0;
      int line=o;
      int col=0;
      for (int k=0; k < count; k++) {
switch (indata[k]) {
case ' ':
          if (addtab == 0)           outdata[o++]=indata[k];
        col++;
      break;
case '\t':
    if (addtab == 0) {
      outdata[o++]=indata[k];
      col++;
    }
 else {
      col=(col | 7) + 1;
    }
  break;
case '\r':
if (addcr == 0) {
  outdata[o++]=indata[k];
  col++;
}
break;
case '\n':
if (addcr == +1) outdata[o++]='\r';
outdata[o++]='\n';
line=o;
col=0;
break;
default :
if (addtab > 0 && o + 1 < line + col) {
int diff=o - line;
while ((diff | 7) < col) {
outdata[o++]='\t';
line-=7 - (diff & 7);
diff=o - line;
}
;
}
;
while (o < line + col) outdata[o++]=' ';
outdata[o++]=indata[k];
col++;
}
}
if (ctrlz == +1) {
if (outdata[o - 1] != 0x1A) outdata[o++]=0x1A;
}
 else if (ctrlz == -1) {
if (o > 2 && outdata[o - 1] == 0x0A && outdata[o - 2] == 0x1A) o--;
if (o > 1 && outdata[o - 1] == 0x1A) o--;
}
try {
File destFile=srcFile;
if (destDir != null) destFile=new File(destDir,files[i]);
FileOutputStream outStream=new FileOutputStream(destFile);
outStream.write(outdata,0,o);
outStream.close();
}
 catch (IOException e) {
throw new BuildException(e);
}
}
}
 catch (Exception e) {
e.printStackTrace();
throw new BuildException(e);
}
}

Fixed version (ground truth):
/** 
 * Executes the task.
 */
public void execute() throws BuildException {
  if (srcDir == null) {
    throw new BuildException("String_Node_Str");
  }
  if (!srcDir.exists()) {
    throw new BuildException("String_Node_Str");
  }
  if (!srcDir.isDirectory()) {
    throw new BuildException("String_Node_Str");
  }
  if (destDir != null) {
    if (!destDir.exists()) {
      throw new BuildException("String_Node_Str");
    }
    if (!destDir.isDirectory()) {
      throw new BuildException("String_Node_Str");
    }
  }
  project.log("String_Node_Str" + "String_Node_Str" + (addcr == -1 ? "String_Node_Str" : addcr == 0 ? "String_Node_Str" : "String_Node_Str") + "String_Node_Str"+ (addtab == -1 ? "String_Node_Str" : addtab == 0 ? "String_Node_Str" : "String_Node_Str")+ "String_Node_Str"+ (ctrlz == -1 ? "String_Node_Str" : ctrlz == 0 ? "String_Node_Str" : "String_Node_Str"),"String_Node_Str",project.MSG_VERBOSE);
  DirectoryScanner ds=super.getDirectoryScanner(srcDir);
  String[] files=ds.getIncludedFiles();
  try {
    for (int i=0; i < files.length; i++) {
      File srcFile=new File(srcDir,files[i]);
      int count=(int)srcFile.length();
      byte indata[]=new byte[count];
      try {
        FileInputStream inStream=new FileInputStream(srcFile);
        inStream.read(indata);
        inStream.close();
      }
 catch (      IOException e) {
        throw new BuildException(e);
      }
      int cr=0;
      int lf=0;
      int tab=0;
      for (int k=0; k < count; k++) {
        byte c=indata[k];
        if (c == '\r')         cr++;
        if (c == '\n')         lf++;
        if (c == '\t')         tab++;
      }
      boolean eof=((count > 0) && (indata[count - 1] == 0x1A));
      project.log(srcFile + "String_Node_Str" + count+ "String_Node_Str"+ cr+ "String_Node_Str"+ lf+ "String_Node_Str"+ tab+ "String_Node_Str"+ eof,"String_Node_Str",project.MSG_VERBOSE);
      int outsize=count;
      if (addcr != 0)       outsize-=cr;
      if (addcr == +1)       outsize+=lf;
      if (addtab == -1)       outsize+=tab * 7;
      if (ctrlz == +1)       outsize+=1;
      byte outdata[]=new byte[outsize];
      int o=0;
      int line=o;
      int col=0;
      for (int k=0; k < count; k++) {
switch (indata[k]) {
case ' ':
          if (addtab == 0)           outdata[o++]=(byte)' ';
        col++;
      break;
case '\t':
    if (addtab == 0) {
      outdata[o++]=(byte)'\t';
      col++;
    }
 else {
      col=(col | 7) + 1;
    }
  break;
case '\r':
if (addcr == 0) {
  outdata[o++]=(byte)'\r';
  col++;
}
break;
case '\n':
if (addcr == +1) outdata[o++]=(byte)'\r';
outdata[o++]=(byte)'\n';
line=o;
col=0;
break;
default :
if (addtab > 0 && o + 1 < line + col) {
int diff=o - line;
while ((diff | 7) < col) {
outdata[o++]=(byte)'\t';
line-=7 - (diff & 7);
diff=o - line;
}
;
}
;
while (o < line + col) outdata[o++]=(byte)' ';
outdata[o++]=indata[k];
col++;
}
}
if (ctrlz == +1) {
if (outdata[o - 1] != 0x1A) outdata[o++]=0x1A;
}
 else if (ctrlz == -1) {
if (o > 2 && outdata[o - 1] == 0x0A && outdata[o - 2] == 0x1A) o--;
if (o > 1 && outdata[o - 1] == 0x1A) o--;
}
try {
File destFile=srcFile;
if (destDir != null) destFile=new File(destDir,files[i]);
FileOutputStream outStream=new FileOutputStream(destFile);
outStream.write(outdata,0,o);
outStream.close();
}
 catch (IOException e) {
throw new BuildException(e);
}
}
}
 catch (Exception e) {
e.printStackTrace();
throw new BuildException(e);
}
}