lib: fdt: add integer overflow checks in fdt header
these checks will usefull in finding the integer overflow
in fdt header fields.
CRs-Fixed: 705108
Change-Id: Ifc6f863cb54e34421bd9e69316eecf461e63ff5b
diff --git a/lib/libfdt/fdt_rw.c b/lib/libfdt/fdt_rw.c
index 9ed0d4d..358f671 100644
--- a/lib/libfdt/fdt_rw.c
+++ b/lib/libfdt/fdt_rw.c
@@ -402,7 +402,7 @@
static void _fdt_packblocks(const char *old, char *new,
int mem_rsv_size, int struct_size)
{
- int mem_rsv_off, struct_off, strings_off;
+ uint32_t mem_rsv_off, struct_off, strings_off;
mem_rsv_off = FDT_ALIGN(sizeof(struct fdt_header), 8);
struct_off = mem_rsv_off + mem_rsv_size;