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There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use "flexible array members"[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. This helps with the ongoing efforts to globally enable -Warray-bounds and get us closer to being able to tighten the FORTIFY_SOURCE routines on memcpy(). [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/78 Link: https://github.com/KSPP/linux/issues/180 Suggested-by: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Stephen Kitt <steve@sk2.org> Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Link: https://lore.kernel.org/r/20220217132755.1786130-1-steve@sk2.org Signed-off-by: Mark Brown <broonie@kernel.org> |
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