dtc: Enable and fix -Wpointer-arith warnings
This patch turns on the -Wpointer-arith option in the dtc Makefile,
and fixes the resulting warnings due to using (void *) in pointer
arithmetic. While convenient, pointer arithmetic on void * is not
portable, so it's better that we avoid it, particularly in libfdt.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
diff --git a/libfdt/libfdt_internal.h b/libfdt/libfdt_internal.h
index f72e70d..2ba30db 100644
--- a/libfdt/libfdt_internal.h
+++ b/libfdt/libfdt_internal.h
@@ -72,7 +72,7 @@
static inline const void *_fdt_offset_ptr(const void *fdt, int offset)
{
- return fdt + fdt_off_dt_struct(fdt) + offset;
+ return (const char *)fdt + fdt_off_dt_struct(fdt) + offset;
}
static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
@@ -82,8 +82,8 @@
static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
{
- const struct fdt_reserve_entry *rsv_table =
- fdt + fdt_off_mem_rsvmap(fdt);
+ const struct fdt_reserve_entry *rsv_table = (struct fdt_reserve_entry *)
+ ((const char *)fdt + fdt_off_mem_rsvmap(fdt));
return rsv_table + n;
}