[issue28474] WinError(): Python int too large to convert to C long

[Josh Rosenberg]

Josh Rosenberg added the comment:

You can't use I as a format code safely; it silently ignores/wraps overflow on the conversion, where i raises on overflow. The unsigned converters are basically useless for resilient code in 99% of cases.

I *think* I remember some private utility functions for doing this using O& though, not sure if they're available in callproc.c...

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nosy: +josh.r

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