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![]() Zero-length arrays are deprecated[1]. Replace npe_load_firmware's union of 0-length arrays with flexible arrays. Detected with GCC 13, using -fstrict-flex-arrays=3: drivers/soc/ixp4xx/ixp4xx-npe.c: In function 'npe_load_firmware': drivers/soc/ixp4xx/ixp4xx-npe.c:570:60: warning: array subscript i is outside array bounds of 'u32[0]' {aka 'unsigned int[]'} [-Warray-bounds=] 570 | image->data[i] = swab32(image->data[i]); include/uapi/linux/swab.h:115:54: note: in definition of macro '__swab32' 115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) | ^ drivers/soc/ixp4xx/ixp4xx-npe.c:570:42: note: in expansion of macro 'swab32' 570 | image->data[i] = swab32(image->data[i]); | ^~~~~~ drivers/soc/ixp4xx/ixp4xx-npe.c:522:29: note: while referencing 'data' 522 | u32 data[0]; | ^~~~ [1] https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays Cc: Krzysztof Halasa <khalasa@piap.pl> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20230105215706.never.027-kees@kernel.org |
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