[issue17580] ctypes: ARM hardfloat argument corruption calling functions with many float arguments

[Berker Peksag]

Berker Peksag added the comment:

> Which patch?

Looks like the patch can be found at https://github.com/atgreen/libffi/pull/34/ and it has been released in libffi 3.1: https://github.com/atgreen/libffi/blob/17ffc3655a531c116e9eb9cc933e50bb1e5c47f8/ChangeLog.libffi-3.1#L481

(It's hard to share a specific commit since libffi's history is not linear.)

The patch also has been merged into CPython's fork in 0fef0afb9d19 (Update the ctypes module's libffi to v3.1):

* https://github.com/python/cpython/blob/master/Modules/_ctypes/libffi/src/arm/ffi.c#L43
* https://github.com/python/cpython/blob/master/Modules/_ctypes/libffi/src/arm/ffi.c#L128

I don't have an ARM system to run David's reproducer (thanks for your report and for the test script, by the way!), but I think we can safely assume that this has already been fixed.

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nosy: +berker.peksag
resolution:  -> out of date
stage:  -> resolved
status: open -> closed

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