[New-bugs-announce] [issue24828] Segfault when using store-context AST node in a load context

[Xavier Morel]

New submission from Xavier Morel:

It looks to be fixed in 3.3 and up, but in Python 2.7

    import ast
    m = ast.Module(body=[
        ast.Expr(value=ast.Name(id='foo', ctx=ast.Store()))
    ])
    ast.fix_missing_locations(m)
    code = compile(m, '', mode='exec')
    eval(code)
 
will segfault on eval. So will a similarly incorrect ast.Attribute node.

Version tested:

Python 2.7.10 (default, May 28 2015, 12:02:55) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.57)] on darwin

----------
components: Library (Lib)
messages: 248269
nosy: xmorel
priority: normal
severity: normal
status: open
title: Segfault when using store-context AST node in a load context
type: crash
versions: Python 2.7, Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue24828>
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