On Fri, 18 Oct 2019, Luc Van Oostenryck wrote: > On Thu, Oct 17, 2019 at 05:49:25PM -0700, Paul Walmsley wrote: > > Static analysis tools such as sparse don't set the RISC-V C model > > preprocessor directives such as "__riscv_cmodel_medany", set by the C > > compilers. This causes the static analyzers to evaluate different > > preprocessor paths than C compilers would. Fix this by defining the > > appropriate C model macros in the static analyzer command lines. > > > > Signed-off-by: Paul Walmsley <paul.walms...@sifive.com> > > --- > > arch/riscv/Makefile | 2 ++ > > 1 file changed, 2 insertions(+) > > > > diff --git a/arch/riscv/Makefile b/arch/riscv/Makefile > > index f5e914210245..0247a90bd4d8 100644 > > --- a/arch/riscv/Makefile > > +++ b/arch/riscv/Makefile > > @@ -47,9 +47,11 @@ KBUILD_CFLAGS += > > -DCONFIG_PAGE_OFFSET=$(CONFIG_PAGE_OFFSET) > > > > ifeq ($(CONFIG_CMODEL_MEDLOW),y) > > KBUILD_CFLAGS += -mcmodel=medlow > > + CHECKFLAGS += -D__riscv_cmodel_medlow > > endif > > ifeq ($(CONFIG_CMODEL_MEDANY),y) > > KBUILD_CFLAGS += -mcmodel=medany > > + CHECKFLAGS += -D__riscv_cmodel_medany > > I can teach sparse about this in the following days.
That would be great. Would you be willing to follow up with me via E-mail or mailing list post when it's fixed? If so, then in the meantime, I'll just drop this patch. - Paul
