On Thu, Feb 7, 2019 at 2:14 AM Martin Sebor <mse...@gmail.com> wrote: > > The attached patch doesn't avoid the false positive but only improves > the warning to make it more readable (as suggested in the PR by Richard > for GCC 9). With the patch, for a call like: > > memcpy (d, s, -1); > > where d and s are pointers with unknown provenances the patch has GCC > in LP32 issue > > warning: ‘memcpy’ specified bound 4294967295 exceeds maximum object > size 2147483647 [-Wstringop-overflow=] > > instead of the somewhat mystifying > > ‘memcpy’ pointer overflow between offset 0 and size [4294967295, > 2147483647] [-Warray-bounds] > > There are a few places the warning is issued from and it would make > sense to consolidate them into the same utility function. Since that > will require some not entirely trivial changes to the warning code > I defer it until GCC 10 as well, along with a fix for the false > positive. > > Tested on x86_64-linux.
OK. > Martin
