Fix dangerous casts

On Windows 64-bit, the size of long is 32-bit, thus any pointer to long cast is
not valid. In any case, one should use intptr_t and ptrdiff_t when casting
to integers. This commit attempts to fix all instances reported by GCC.
When relevant, I replaced code by the macros PTR_ADD, ALIGN_UP from system.h

Change-Id: I2273b0e8465d3c4689824717ed5afa5ed238a2dc

1 files changed, 2 insertions, 1 deletions

diff --git a/firmware/asm/memset16.c b/firmware/asm/memset16.c
index db71d86fcc..12f3388a8d 100644
--- a/firmware/asm/memset16.c
+++ b/firmware/asm/memset16.c
@@ -20,9 +20,10 @@
  ****************************************************************************/
 
 #include "string-extra.h" /* memset16() */
+#include <stdint.h>
 
 #define LBLOCKSIZE (sizeof(long)/2)
-#define ROCKBOX_UNALIGNED(X)   ((long)X & (sizeof(long) - 1))
+#define ROCKBOX_UNALIGNED(X)   ((uintptr_t)X & (sizeof(long) - 1))
 #define TOO_SMALL(LEN) ((LEN) < LBLOCKSIZE)
 
 void memset16(void *dst, int val, size_t len)