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Kees Cook e202196b8a lib/crypto: Annotate crypto strings with nonstring
Annotate various keys, ivs, and other byte arrays with __nonstring so
that static initializers will not complain about truncating the trailing
NUL byte under GCC 15 with -Wunterminated-string-initialization enabled.
Silences many warnings like:

../lib/crypto/aesgcm.c:642:27: warning: initializer-string for array of 'unsigned char' truncates NUL terminator but destination lacks 'nonstring' attribute (13 chars into 12 available) [-Wunterminated-string-initialization]
  642 |                 .iv     = "\xca\xfe\xba\xbe\xfa\xce\xdb\xad"
      |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Kees Cook <kees@kernel.org>
Link: https://lore.kernel.org/r/20250529173113.work.760-kees@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
History 2025-06-15 18:14:49 -07:00
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Linux kernel
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There are several guides for kernel developers and users. These guides can
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