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From: "b.r.longbons at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/17568] New: gdb.lookup_type fails if a C++11 enum class
 has a value with the same name
Date: Sun, 09 Nov 2014 07:45:00 -0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gdb
X-Bugzilla-Component: python
X-Bugzilla-Version: 7.7
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X-Bugzilla-Who: b.r.longbons at gmail dot com
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X-Bugzilla-Priority: P2
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https://sourceware.org/bugzilla/show_bug.cgi?id=17568

            Bug ID: 17568
           Summary: gdb.lookup_type fails if a C++11 enum class has a
                    value with the same name
           Product: gdb
           Version: 7.7
            Status: NEW
          Severity: normal
          Priority: P2
         Component: python
          Assignee: unassigned at sourceware dot org
          Reporter: b.r.longbons at gmail dot com

// source, compile with -std=c++0x, requires gcc 4.4 or later
enum class SP { SP };

This bug is most likely related to the fact that gdb does not yet distinguish
between 'enum' and 'enum class', but somehow `ptype` manages to get the right
symbol.



# bad
(gdb) python print gdb.lookup_type('SP')
Traceback (most recent call last):
  File "<string>", line 1, in <module>
gdb.error: No type named SP.
Error while executing Python code.

# bad, SP is a type, SP::SP is the value
(gdb) python print gdb.parse_and_eval('SP')
SP

# bad, but useful to get the thing I'm actually wanting
(gdb) python print gdb.parse_and_eval('SP').type
SP

# mostly good (should be 'enum class')
(gdb) ptype SP
type = enum SP {SP}

# bad, there is no value named 'SP', only 'SP::SP'
(gdb) p SP
$1 = SP

# bad
(gdb) p SP::SP
A syntax error in expression, near `'.

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