Kees Cook 5c78e793f7 overflow: Introduce __DEFINE_FLEX for having no initializer ...

While not yet in the tree, there is a proposed patch[1] that was
depending on the prior behavior of _DEFINE_FLEX, which did not have an
explicit initializer. Provide this via __DEFINE_FLEX now, which can also
have attributes applied (e.g. __uninitialized).

Examples of the resulting initializer behaviors can be seen here:
https://godbolt.org/z/P7Go8Tr33

Link: https://lore.kernel.org/netdev/20250520205920.2134829-9-anthony.l.nguyen@intel.com [1]
Fixes: 47e36ed784 ("overflow: Fix direct struct member initialization in _DEFINE_FLEX()")
Signed-off-by: Kees Cook <kees@kernel.org>

2025-06-01 08:41:11 -07:00

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