diff options
| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2023-01-09 19:40:38 -0600 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2023-01-19 21:59:35 +0100 |
| commit | aa81cb9d9723694bb18359adbef7964030758dba (patch) | |
| tree | 61221f67b68a899496a7f0db9e135cbe6542981d | |
| parent | 5dc4c995db9eb45f6373a956eb1f69460e69e6d4 (diff) | |
x86/fpu: Replace zero-length array in struct xregs_state with flexible-array member
Zero-length arrays are deprecated [1] and have to be replaced by C99
flexible-array members.
This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines
on memcpy() and help to make progress towards globally enabling
-fstrict-flex-arrays=3 [2]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
Link: https://github.com/KSPP/linux/issues/78
Link: https://lore.kernel.org/r/Y7zCFpa2XNs/o9YQ@work
| -rw-r--r-- | arch/x86/include/asm/fpu/types.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/fpu/types.h b/arch/x86/include/asm/fpu/types.h index eb7cd1139d97..7f6d858ff47a 100644 --- a/arch/x86/include/asm/fpu/types.h +++ b/arch/x86/include/asm/fpu/types.h @@ -321,7 +321,7 @@ struct xstate_header { struct xregs_state { struct fxregs_state i387; struct xstate_header header; - u8 extended_state_area[0]; + u8 extended_state_area[]; } __attribute__ ((packed, aligned (64))); /* |