[issue9011] ast_for_factor unary minus optimization changes AST

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

Fixed in r82043 (py3k) and r82044 (release31-maint), simply by removing the relevant 'if' block.

For 2.x, Antoine (on IRC) pointed out that there might well be third party code that depends on -0x80000000 being an int rather than a long (32-bit machine), so changing that behaviour could cause breakage.

Can anyone propose a fix that doesn't change behaviour?

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