On 2018-12-28 18:33, Philippe Mathieu-Daudé wrote: > GCC 8 introduced the -Wstringop-truncation checker to detect truncation by > the strncat and strncpy functions (closely related to -Wstringop-overflow, > which detect buffer overflow by string-modifying functions declared in > <string.h>). > > In tandem of -Wstringop-truncation, the "nonstring" attribute was added: > > The nonstring variable attribute specifies that an object or member > declaration with type array of char, signed char, or unsigned char, > or pointer to such a type is intended to store character arrays that > do not necessarily contain a terminating NUL. This is useful in detecting > uses of such arrays or pointers with functions that expect NUL-terminated > strings, and to avoid warnings when such an array or pointer is used as > an argument to a bounded string manipulation function such as strncpy. > > From the GCC manual: > https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-nonstring-variable-attribute > > Add the QEMU_NONSTRING macro which checks if the compiler supports this > attribute. > > Suggested-by: Michael S. Tsirkin <m...@redhat.com> > Reviewed-by: Eric Blake <ebl...@redhat.com> > Reviewed-by: Michael S. Tsirkin <m...@redhat.com> > Signed-off-by: Philippe Mathieu-Daudé <phi...@redhat.com>
Reviewed-by: Thomas Huth <th...@redhat.com>
