[issue28633] eval() Function - Segmentation Fault

[Zachary Ware]

Zachary Ware added the comment:

Reproduced on macOS:

$ ./python.exe
Python 3.6.0b4+ (3.6:b26c8104e54f, Nov  7 2016, 12:01:37)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] on darwin
Type help, copyright, credits or license for more information.
>>> B''F''
Segmentation fault: 11

Looks like `f''b''` is handled correctly, but `b''f''` is not.

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components: +Interpreter Core
nosy: +eric.smith, ned.deily, zach.ware
priority: normal -> release blocker
stage:  -> needs patch
type:  -> crash
versions: +Python 3.6, Python 3.7

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