FIX: Inverted PyErr_Occurred check in enum type caster (_enums.h)#31556
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ksunden merged 1 commit intomatplotlib:mainfrom Apr 23, 2026
Merged
FIX: Inverted PyErr_Occurred check in enum type caster (_enums.h)#31556ksunden merged 1 commit intomatplotlib:mainfrom
ksunden merged 1 commit intomatplotlib:mainfrom
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QuLogic
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Apr 23, 2026
story645
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Apr 23, 2026
| value = decltype(value)(ival); \ | ||
| Py_DECREF(tmp); \ | ||
| return !(ival == -1 && !PyErr_Occurred()); \ | ||
| return !(ival == -1 && PyErr_Occurred()); \ |
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Kinda think return (ival !=-1 || !PyErr_Occurred()); is more readable - is there a reason we can't do this?
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…556-on-v3.10.x Backport PR #31556 on branch v3.10.x (FIX: Inverted PyErr_Occurred check in enum type caster (_enums.h))
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PR summary
Fix an inverted error-check in the pybind11 enum type caster in src/_enums.h.
PyLong_AsLongsignals failure by returning -1 and setting a Python exception. The correct way to check for failure should be:return !(ival == -1 && PyErr_Occurred());Part of #31424
this is my first PR here; I just wanted to get the flow down of contributing here before making any larger changes :)
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I used Claude Code to help understand the codebase. The fix itself is a one-character change I applied.
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