diff options
| author | Philippe Mathieu-Daudé <philmd@redhat.com> | 2019-01-03 09:56:36 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-01-17 21:10:57 -0500 |
| commit | 9cbb8eca1729eab1123847e37454975bb555008a (patch) | |
| tree | 8e8ac3454d744fd9c0b11af34e91fbb80054743d /include/hw/acpi | |
| parent | 97b583f46c435aaa40942ca73739d79190776b7f (diff) | |
hw/acpi: Use QEMU_NONSTRING for non NUL-terminated arrays
GCC 8 added a -Wstringop-truncation warning:
The -Wstringop-truncation warning added in GCC 8.0 via r254630 for
bug 81117 is specifically intended to highlight likely unintended
uses of the strncpy function that truncate the terminating NUL
character from the source string.
This new warning leads to compilation failures:
CC hw/acpi/core.o
In function 'acpi_table_install', inlined from 'acpi_table_add' at qemu/hw/acpi/core.c:296:5:
qemu/hw/acpi/core.c:184:9: error: 'strncpy' specified bound 4 equals destination size [-Werror=stringop-truncation]
strncpy(ext_hdr->sig, hdrs->sig, sizeof ext_hdr->sig);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make: *** [qemu/rules.mak:69: hw/acpi/core.o] Error 1
Use the QEMU_NONSTRING attribute, since ACPI tables don't require the
strings to be NUL-terminated.
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Diffstat (limited to 'include/hw/acpi')
| -rw-r--r-- | include/hw/acpi/acpi-defs.h | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h index 5021cb9e79..4ed160afae 100644 --- a/include/hw/acpi/acpi-defs.h +++ b/include/hw/acpi/acpi-defs.h @@ -41,8 +41,8 @@ enum { }; typedef struct AcpiRsdpData { - uint8_t oem_id[6]; /* OEM identification */ - uint8_t revision; /* Must be 0 for 1.0, 2 for 2.0 */ + uint8_t oem_id[6] QEMU_NONSTRING; /* OEM identification */ + uint8_t revision; /* Must be 0 for 1.0, 2 for 2.0 */ unsigned *rsdt_tbl_offset; unsigned *xsdt_tbl_offset; @@ -57,10 +57,13 @@ typedef struct AcpiRsdpData { uint32_t length; /* Length of table, in bytes, including header */ \ uint8_t revision; /* ACPI Specification minor version # */ \ uint8_t checksum; /* To make sum of entire table == 0 */ \ - uint8_t oem_id [6]; /* OEM identification */ \ - uint8_t oem_table_id [8]; /* OEM table identification */ \ + uint8_t oem_id[6] \ + QEMU_NONSTRING; /* OEM identification */ \ + uint8_t oem_table_id[8] \ + QEMU_NONSTRING; /* OEM table identification */ \ uint32_t oem_revision; /* OEM revision number */ \ - uint8_t asl_compiler_id [4]; /* ASL compiler vendor ID */ \ + uint8_t asl_compiler_id[4] \ + QEMU_NONSTRING; /* ASL compiler vendor ID */ \ uint32_t asl_compiler_revision; /* ASL compiler revision number */ |