[New-bugs-announce] [issue28633] eval() Function - Segmentation Fault

[Honor]

New submission from Honor:

Hello,

Python version : 3.7.0a0
OS : Ubunt - Linux x 3.13.0-24-generic

Test Script:

>>> a="B\'\'F\'\'"
>>> eval(a)
Program received signal SIGSEGV, Segmentation fault.
0x0000000000531c5a in parsestrplus (n=0x7ffff7ee0b20, c=0x7fffffffd730) at
Python/ast.c:5150
5150            Py_DECREF(s);
(gdb) info reg
rax            0x0 0
rbx            0x0 0
rcx            0x7ffff7e9bab0 140737352678064
rdx            0x0 0
rsi            0x7ffff7e9ba88 140737352678024
rdi            0x7ffff7f74670 140737353565808
rbp            0x1 0x1
rsp            0x7fffffffd350 0x7fffffffd350
r8             0x0 0
r9             0x7fffffffd328 140737488343848
r10            0x7ffff7e9bab0 140737352678064
r11            0x7fffffffd2e0 140737488343776
r12            0x7ffff7ee0b20 140737352960800
r13            0x7fffffffd730 140737488344880
r14            0x0 0
r15            0x7ffff7f8557a 140737353635194
rip            0x531c5a 0x531c5a <ast_for_atom+3370>
eflags         0x10246 [ PF ZF IF RF ]
cs             0x33 51
ss             0x2b 43
ds             0x0 0
es             0x0 0
fs             0x0 0
gs             0x0 0

(gdb) bt
#0  0x0000000000531c5a in parsestrplus (n=0x7ffff7ee0b20, c=0x7fffffffd730)
at Python/ast.c:5150
#1  ast_for_atom (c=c at entry=0x7fffffffd730, n=0x7ffff7ee0b20) at
Python/ast.c:2110
#2  0x000000000053221a in ast_for_atom_expr (n=0x7ffff7ee0d78,
c=0x7fffffffd730) at Python/ast.c:2465
#3  ast_for_power (n=0x7ffff7ee0d50, c=0x7fffffffd730) at Python/ast.c:2502
#4  ast_for_expr (c=c at entry=0x7fffffffd730, n=0x7ffff7ee0d50) at
Python/ast.c:2690
#5  0x0000000000537446 in ast_for_testlist (n=0x7ffff7e8f0d0,
c=0x7fffffffd730) at Python/ast.c:2881
#6  PyAST_FromNodeObject (n=0x7ffff7ee0ad0, n at entry=0x7ffff7ee0af8,
flags=<optimized out>,
    filename=filename at entry=0x7ffff7e9be30, arena=arena at entry=0x7ffff7f751e0)
at Python/ast.c:815
#7  0x000000000042649f in PyParser_ASTFromStringObject
(arena=0x7ffff7f751e0, flags=<optimized out>, start=258,
    filename=0x7ffff7e9be30, s=0x7ffff7e9be30 "\003") at
Python/pythonrun.c:1124
#8  PyRun_StringFlags (str=str at entry=0x7ffff7e9bae0 "B''F''",
start=start at entry=258,
    globals=globals at entry=0x7ffff7f5d168, locals=locals at entry=0x7ffff7f5d168,
flags=flags at entry=0x7fffffffd840)
    at Python/pythonrun.c:902
#9  0x000000000053a9fe in builtin_eval_impl (module=<optimized out>,
locals=0x7ffff7f5d168, globals=0x7ffff7f5d168,
    source=0x7ffff7e9bab0) at Python/bltinmodule.c:875
#10 builtin_eval (module=<optimized out>, args=<optimized out>) at
Python/clinic/bltinmodule.c.h:243
#11 0x00000000004a7869 in _PyCFunction_FastCallDict (kwargs=0x0, nargs=1,
args=0x53a8b0 <builtin_eval>,
    func_obj=0x7ffff7fda990) at Objects/methodobject.c:234
#12 _PyCFunction_FastCallKeywords (func=func at entry=0x7ffff7fda990,
stack=stack at entry=0x7ffff7fa2ca8, nargs=1,
    kwnames=kwnames at entry=0x0) at Objects/methodobject.c:295
#13 0x000000000053c954 in call_function
(pp_stack=pp_stack at entry=0x7fffffffda50,
oparg=oparg at entry=1,
    kwnames=kwnames at entry=0x0) at Python/ceval.c:4793
#14 0x000000000054032c in _PyEval_EvalFrameDefault (f=<optimized out>,
throwflag=<optimized out>)
    at Python/ceval.c:3277
#15 0x000000000053c571 in PyEval_EvalFrameEx (throwflag=0,
f=0x7ffff7fa2b28) at Python/ceval.c:718
#16 _PyEval_EvalCodeWithName (_co=_co at entry=0x7ffff7ed7270,
globals=globals at entry=0x7ffff7f5d168,
    locals=locals at entry=0x7ffff7f5d168, args=args at entry=0x0,
argcount=argcount at entry=0, kwnames=kwnames at entry=0x0,
    kwargs=kwargs at entry=0x8, kwcount=kwcount at entry=0, kwstep=kwstep at entry=2,
defs=defs at entry=0x0,
    defcount=defcount at entry=0, kwdefs=kwdefs at entry=0x0,
closure=closure at entry=0x0, name=name at entry=0x0,
    qualname=qualname at entry=0x0) at Python/ceval.c:4121
#17 0x000000000053d380 in PyEval_EvalCodeEx (closure=0x0, kwdefs=0x0,
defcount=0, defs=0x0, kwcount=0, kws=0x0,
    argcount=0, args=0x0, locals=locals at entry=0x7ffff7f5d168,
globals=globals at entry=0x7ffff7f5d168,
    _co=_co at entry=0x7ffff7ed7270) at Python/ceval.c:4142
#18 PyEval_EvalCode (co=co at entry=0x7ffff7ed7270, globals=globals at entry
=0x7ffff7f5d168,
    locals=locals at entry=0x7ffff7f5d168) at Python/ceval.c:695
#19 0x0000000000427bc4 in run_mod (arena=0x7ffff7f75180,
flags=0x7fffffffdd40, locals=0x7ffff7f5d168,
    globals=0x7ffff7f5d168, filename=0x7ffff7f14ae8, mod=0x936ab0) at
Python/pythonrun.c:980
#20 PyRun_InteractiveOneObject (fp=fp at entry=0x7ffff74a9640
<_IO_2_1_stdin_>,
    filename=filename at entry=0x7ffff7f14ae8, flags=flags at entry=0x7fffffffdd40)
at Python/pythonrun.c:233
#21 0x0000000000427e8e in PyRun_InteractiveLoopFlags
(fp=fp at entry=0x7ffff74a9640
<_IO_2_1_stdin_>,
    filename_str=filename_str at entry=0x5d0f05 "<stdin>",
flags=flags at entry=0x7fffffffdd40)
at Python/pythonrun.c:112
#22 0x0000000000427f9c in PyRun_AnyFileExFlags (fp=0x7ffff74a9640
<_IO_2_1_stdin_>, filename=0x5d0f05 "<stdin>",
    closeit=0, flags=0x7fffffffdd40) at Python/pythonrun.c:74
#23 0x0000000000439b31 in run_file (p_cf=0x7fffffffdd40, filename=0x0,
fp=0x7ffff74a9640 <_IO_2_1_stdin_>)
    at Modules/main.c:319
#24 Py_Main (argc=argc at entry=1, argv=argv at entry=0x8fe010) at
Modules/main.c:779
#25 0x000000000041d964 in main (argc=1, argv=<optimized out>) at
./Programs/python.c:69

----------
messages: 280218
nosy: Stone
priority: normal
severity: normal
status: open
title: eval() Function - Segmentation Fault

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28633>
_______________________________________