summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorGustavo A. R. Silva <gustavoars@kernel.org>2023-06-22 17:14:51 -0600
committerGustavo A. R. Silva <gustavoars@kernel.org>2023-07-12 13:24:20 -0600
commit221a4b56ec70c1a9f09ce78751613d16c508a4ce (patch)
tree57d1913ca0a6fa7ea90f96a08908f616d09137cd
parent76d2ceda723c90ad7ee93224b8ebaeeb4ea13203 (diff)
sparc: openpromio: Address -Warray-bounds warning
One-element arrays are deprecated, and we are replacing them with flexible array members instead. So, replace one-element array with flexible-array member in struct openpromio. Address the following warning found after building (with GCC-13) sparc with sparc64_defconfig: In function 'opromgetprop', inlined from 'openprom_sunos_ioctl.isra' at drivers/sbus/char/openprom.c:312:11: drivers/sbus/char/openprom.c:141:24: warning: array subscript 1 is above array bounds of 'char[1]' [-Warray-bounds=] 141 | op->oprom_array[len] = '\0'; | ~~~~~~~~~~~~~~~^~~~~ In file included from drivers/sbus/char/openprom.c:31: arch/sparc/include/uapi/asm/openpromio.h: In function 'openprom_sunos_ioctl.isra': arch/sparc/include/uapi/asm/openpromio.h:16:17: note: while referencing 'oprom_array' 16 | char oprom_array[1]; /* Holds property names and values. */ | ^~~~~~~~~~~ This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines on memcpy() and help us make progress towards globally enabling -Warray-bounds. This results in no differences in binary output. Link: https://github.com/KSPP/linux/issues/79 Link: https://github.com/KSPP/linux/issues/322 Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
-rw-r--r--arch/sparc/include/uapi/asm/openpromio.h5
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/sparc/include/uapi/asm/openpromio.h b/arch/sparc/include/uapi/asm/openpromio.h
index d4494b679e99..2a73ec77aba6 100644
--- a/arch/sparc/include/uapi/asm/openpromio.h
+++ b/arch/sparc/include/uapi/asm/openpromio.h
@@ -10,10 +10,9 @@
* were chosen to be exactly equal to the SunOS equivalents.
*/
-struct openpromio
-{
+struct openpromio {
unsigned int oprom_size; /* Actual size of the oprom_array. */
- char oprom_array[1]; /* Holds property names and values. */
+ char oprom_array[]; /* Holds property names and values. */
};
#define OPROMMAXPARAM 4096 /* Maximum size of oprom_array. */