[Python-Dev] Win64 AMD64 (aka x64) binaries available64 (original) (raw)

"Martin v. Löwis" martin at v.loewis.de
Fri Apr 21 23:56:35 CEST 2006

Thomas Heller wrote:

I forgot to mention that there are a lot of warnings about conversion betweem Pyssizet to int - if you want me to fix the obvious ones I'll offer to correct some of them from time to time and commit the changes.

Right - they have been there ever since I started (in fact, I started this entire project because of these warnings). You can get them on x86, too, if you enable /Wp64.

Please feel free to fix any of them that you feel comfortable about.

I wonder why gcc doesn't warn about those.

It just doesn't implement truncation warnings between variables of differently-sized integer types. This (typically) isn't undefined behaviour: the C standard mandates very well what should happen for these truncations. Warning about any and all truncations would lead to incredible noise.

/Wp64 only works because they restrict themselves to int64->int32 warnings (essentially).

Regards, Martin

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