[Bug python/18170] New: Why does valpy_int disallow pointers?

[Bug python/18170] New: Why does valpy_int disallow pointers?

[dje at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18170

            Bug ID: 18170
           Summary: Why does valpy_int disallow pointers?
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: python
          Assignee: unassigned at sourceware dot org
          Reporter: dje at google dot com

This came up on #gdb.

(gdb) py print int(gdb.parse_and_eval('$ebp'))
Traceback (most recent call last):
  File "<string>", line 1, in <module>
gdb.error: Cannot convert value to int.
Error while executing Python code.
(gdb) py print long(gdb.parse_and_eval('$ebp'))
4294957336
(gdb) 

For python3, we use valpy_long for int conversions:

#ifdef IS_PY3K
  valpy_long,                 /* nb_int */
  NULL,                       /* reserved */
#else
  NULL,                       /* nb_coerce */
  valpy_int,                  /* nb_int */
  valpy_long,                 /* nb_long */
#endif

There's no explanation in the code of why things are the way they are.
If there's a concern about loss of precision such things should be
explicitly caught instead of assuming int(gdb.parse_and_eval('some_pointer'))
won't fit. I'm guessing, however, this is just oversight.
Next step would be to start going through commit logs and emails.

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