On a Thursday in 2025, Jiri Denemark via Devel wrote:
From: Jiri Denemark <[email protected]>

The only thing that can fail inside virCPUDefFilterFeatures is
VIR_DELETE_ELEMENT_INPLACE macro. The macro just calls
virDeleteElementsN, which reports a warning when all elements to be
removed are not within the array bounds and returns -1. The function
succeeds otherwise. But since VIR_DELETE_ELEMENT_INPLACE sets the number
of elements to be removed to 1 and we call it with i < cpu->nfeatures,
the safety check in virDeleteElementsN will never fail. And even if we
theoretically called it with wrong arguments, it just wouldn't do
anything.

Thus we can safely assume VIR_DELETE_ELEMENT_INPLACE always succeeds in
virCPUDefFilterFeatures and avoid reporting any errors to simplify
callers.

Signed-off-by: Jiri Denemark <[email protected]>
---
src/conf/cpu_conf.c          |  9 ++++-----
src/conf/cpu_conf.h          |  2 +-
src/qemu/qemu_capabilities.c | 15 ++++++---------
src/qemu/qemu_domain.c       |  3 +--
src/qemu/qemu_process.c      |  5 ++---
5 files changed, 14 insertions(+), 20 deletions(-)


Reviewed-by: Ján Tomko <[email protected]>

Jano

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