prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  Bad unsigned casting
  ### Description
  
  `pwndbg.memory.u` returns signed integers (with minus `-` sign).
  
  ### Steps to reproduce
  
  
  ```c
  #include <stdio.h>
  #include <stdint.h>
  
  int main(int argc, char const *argv[])
  {
      uint64_t x = 0xb60ad86e8fb52ea8;
      printf("%p\n", &x);
      getc(stdin);
      return 0;
  }
  ```
  
  ```
  clang bad_u.c -g -o bad_u
  gdb ./bad_u
  
  pwndbg> x/xg 0x7fffffffab18
  0x7fffffffab18:	0xb60ad86e8fb52ea8
  pwndbg> python-interactive 
  >>> pwndbg.memory.u(0x7fffffffab18)
  -5329209239670542680
  ```
  
  Idk why it doesn't break the pwndbg visibly. Found it running `vis_heap_chunks` on arbitrary addresses (the minus were printed in few places).
  
  ### My setup
  
  ```
  GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
  python: 3.6.9 (default, Nov  7 2019, 10:44:02)
  pwndbg: dev branch
  ```
  Bad unsigned casting
  ### Description
  
  `pwndbg.memory.u` returns signed integers (with minus `-` sign).
  
  ### Steps to reproduce
  
  
  ```c
  #include <stdio.h>
  #include <stdint.h>
  
  int main(int argc, char const *argv[])
  {
      uint64_t x = 0xb60ad86e8fb52ea8;
      printf("%p\n", &x);
      getc(stdin);
      return 0;
  }
  ```
  
  ```
  clang bad_u.c -g -o bad_u
  gdb ./bad_u
  
  pwndbg> x/xg 0x7fffffffab18
  0x7fffffffab18:	0xb60ad86e8fb52ea8
  pwndbg> python-interactive 
  >>> pwndbg.memory.u(0x7fffffffab18)
  -5329209239670542680
  ```
  
  Idk why it doesn't break the pwndbg visibly. Found it running `vis_heap_chunks` on arbitrary addresses (the minus were printed in few places).
  
  ### My setup
  
  ```
  GNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git
  python: 3.6.9 (default, Nov  7 2019, 10:44:02)
  pwndbg: dev branch
  ```
  
  </issue>
  <code>
  [start of pwndbg/inthook.py]
  1 #!/usr/bin/env python
  2 # -*- coding: utf-8 -*-
  3 """
  4 This hook is necessary for compatibility with Python2.7 versions of GDB
  5 since they cannot directly cast to integer a gdb.Value object that is
  6 not already an integer type.
  7 """
  8 from __future__ import absolute_import
  9 from __future__ import division
  10 from __future__ import print_function
  11 from __future__ import unicode_literals
  12 
  13 import enum
  14 import os
  15 
  16 import gdb
  17 import six
  18 from future.utils import with_metaclass
  19 
  20 import pwndbg.typeinfo
  21 
  22 if six.PY2:
  23     import __builtin__ as builtins
  24 else:
  25     import builtins
  26 
  27 _int = builtins.int
  28 
  29 
  30 # We need this class to get isinstance(7, xint) to return True
  31 class IsAnInt(type):
  32     def __instancecheck__(self, other):
  33         return isinstance(other, _int)
  34 
  35 
  36 class xint(with_metaclass(IsAnInt, builtins.int)):
  37     def __new__(cls, value, *a, **kw):
  38         if isinstance(value, gdb.Value):
  39             if pwndbg.typeinfo.is_pointer(value):
  40                 value = value.cast(pwndbg.typeinfo.size_t)
  41             else:
  42                 value = value.cast(pwndbg.typeinfo.ssize_t)
  43 
  44         elif isinstance(value, gdb.Symbol):
  45             symbol = value
  46             value = symbol.value()
  47             if symbol.is_function:
  48                 value = value.cast(pwndbg.typeinfo.size_t)
  49 
  50         elif not isinstance(value, (six.string_types, six.integer_types)) \
  51                 or isinstance(cls, enum.EnumMeta):
  52             # without check for EnumMeta math operations with enums were failing e.g.:
  53             #     pwndbg> py import re; flags = 1 | re.MULTILINE
  54             return _int.__new__(cls, value, *a, **kw)
  55 
  56         return _int(_int(value, *a, **kw))
  57 
  58 # Do not hook 'int' if we are just generating documentation
  59 if os.environ.get('SPHINX', None) is None:
  60     builtins.int = xint
  61     globals()['int'] = xint
  62     if six.PY3:
  63         builtins.long = xint
  64         globals()['long'] = xint
  65
  [end of pwndbg/inthook.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/pwndbg/inthook.py b/pwndbg/inthook.py
  --- a/pwndbg/inthook.py
  +++ b/pwndbg/inthook.py
  @@ -39,7 +39,7 @@
               if pwndbg.typeinfo.is_pointer(value):
                   value = value.cast(pwndbg.typeinfo.size_t)
               else:
  -                value = value.cast(pwndbg.typeinfo.ssize_t)
  +                return _int.__new__(cls, value, *a, **kw)
   
           elif isinstance(value, gdb.Symbol):
               symbol = value
  
verification_info: {"golden_diff": "diff --git a/pwndbg/inthook.py b/pwndbg/inthook.py\n--- a/pwndbg/inthook.py\n+++ b/pwndbg/inthook.py\n@@ -39,7 +39,7 @@\n             if pwndbg.typeinfo.is_pointer(value):\n                 value = value.cast(pwndbg.typeinfo.size_t)\n             else:\n-                value = value.cast(pwndbg.typeinfo.ssize_t)\n+                return _int.__new__(cls, value, *a, **kw)\n \n         elif isinstance(value, gdb.Symbol):\n             symbol = value\n", "issue": "Bad unsigned casting\n### Description\r\n\r\n`pwndbg.memory.u` returns signed integers (with minus `-` sign).\r\n\r\n### Steps to reproduce\r\n\r\n\r\n```c\r\n#include <stdio.h>\r\n#include <stdint.h>\r\n\r\nint main(int argc, char const *argv[])\r\n{\r\n    uint64_t x = 0xb60ad86e8fb52ea8;\r\n    printf(\"%p\\n\", &x);\r\n    getc(stdin);\r\n    return 0;\r\n}\r\n```\r\n\r\n```\r\nclang bad_u.c -g -o bad_u\r\ngdb ./bad_u\r\n\r\npwndbg> x/xg 0x7fffffffab18\r\n0x7fffffffab18:\t0xb60ad86e8fb52ea8\r\npwndbg> python-interactive \r\n>>> pwndbg.memory.u(0x7fffffffab18)\r\n-5329209239670542680\r\n```\r\n\r\nIdk why it doesn't break the pwndbg visibly. Found it running `vis_heap_chunks` on arbitrary addresses (the minus were printed in few places).\r\n\r\n### My setup\r\n\r\n```\r\nGNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git\r\npython: 3.6.9 (default, Nov  7 2019, 10:44:02)\r\npwndbg: dev branch\r\n```\nBad unsigned casting\n### Description\r\n\r\n`pwndbg.memory.u` returns signed integers (with minus `-` sign).\r\n\r\n### Steps to reproduce\r\n\r\n\r\n```c\r\n#include <stdio.h>\r\n#include <stdint.h>\r\n\r\nint main(int argc, char const *argv[])\r\n{\r\n    uint64_t x = 0xb60ad86e8fb52ea8;\r\n    printf(\"%p\\n\", &x);\r\n    getc(stdin);\r\n    return 0;\r\n}\r\n```\r\n\r\n```\r\nclang bad_u.c -g -o bad_u\r\ngdb ./bad_u\r\n\r\npwndbg> x/xg 0x7fffffffab18\r\n0x7fffffffab18:\t0xb60ad86e8fb52ea8\r\npwndbg> python-interactive \r\n>>> pwndbg.memory.u(0x7fffffffab18)\r\n-5329209239670542680\r\n```\r\n\r\nIdk why it doesn't break the pwndbg visibly. Found it running `vis_heap_chunks` on arbitrary addresses (the minus were printed in few places).\r\n\r\n### My setup\r\n\r\n```\r\nGNU gdb (Ubuntu 8.1-0ubuntu3.2) 8.1.0.20180409-git\r\npython: 3.6.9 (default, Nov  7 2019, 10:44:02)\r\npwndbg: dev branch\r\n```\n", "before_files": [{"content": "#!/usr/bin/env python\n# -*- coding: utf-8 -*-\n\"\"\"\nThis hook is necessary for compatibility with Python2.7 versions of GDB\nsince they cannot directly cast to integer a gdb.Value object that is\nnot already an integer type.\n\"\"\"\nfrom __future__ import absolute_import\nfrom __future__ import division\nfrom __future__ import print_function\nfrom __future__ import unicode_literals\n\nimport enum\nimport os\n\nimport gdb\nimport six\nfrom future.utils import with_metaclass\n\nimport pwndbg.typeinfo\n\nif six.PY2:\n    import __builtin__ as builtins\nelse:\n    import builtins\n\n_int = builtins.int\n\n\n# We need this class to get isinstance(7, xint) to return True\nclass IsAnInt(type):\n    def __instancecheck__(self, other):\n        return isinstance(other, _int)\n\n\nclass xint(with_metaclass(IsAnInt, builtins.int)):\n    def __new__(cls, value, *a, **kw):\n        if isinstance(value, gdb.Value):\n            if pwndbg.typeinfo.is_pointer(value):\n                value = value.cast(pwndbg.typeinfo.size_t)\n            else:\n                value = value.cast(pwndbg.typeinfo.ssize_t)\n\n        elif isinstance(value, gdb.Symbol):\n            symbol = value\n            value = symbol.value()\n            if symbol.is_function:\n                value = value.cast(pwndbg.typeinfo.size_t)\n\n        elif not isinstance(value, (six.string_types, six.integer_types)) \\\n                or isinstance(cls, enum.EnumMeta):\n            # without check for EnumMeta math operations with enums were failing e.g.:\n            #     pwndbg> py import re; flags = 1 | re.MULTILINE\n            return _int.__new__(cls, value, *a, **kw)\n\n        return _int(_int(value, *a, **kw))\n\n# Do not hook 'int' if we are just generating documentation\nif os.environ.get('SPHINX', None) is None:\n    builtins.int = xint\n    globals()['int'] = xint\n    if six.PY3:\n        builtins.long = xint\n        globals()['long'] = xint\n", "path": "pwndbg/inthook.py"}]}