Initial gcc4 warning cleanup (and some minor policing)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8063 a1c6a512-1295-4272-9138-f99709370657

3 files changed, 5 insertions, 5 deletions

diff --git a/firmware/common/memcmp.c b/firmware/common/memcmp.c
index ac7a194..4a871fa 100644
--- a/firmware/common/memcmp.c
+++ b/firmware/common/memcmp.c
@@ -95,8 +95,8 @@ _DEFUN (memcmp, (m1, m2, n),
 
       /* check m mod LBLOCKSIZE remaining characters */
 
-      s1 = (char*)a1;
-      s2 = (char*)a2;
+      s1 = (unsigned char*)a1;
+      s2 = (unsigned char*)a2;
     }
 
   while (n--)
diff --git a/firmware/common/memcpy.c b/firmware/common/memcpy.c
index 5b23eba..e9b8e82 100644
--- a/firmware/common/memcpy.c
+++ b/firmware/common/memcpy.c
@@ -95,7 +95,7 @@ _DEFUN (memcpy, (dst0, src0, len0),
           *aligned_dst++ = *aligned_src++;
           *aligned_dst++ = *aligned_src++;
           *aligned_dst++ = *aligned_src++;
-          len -= BIGBLOCKSIZE;
+          len -= (unsigned int)BIGBLOCKSIZE;
         }
 
       /* Copy one long word at a time if possible.  */
diff --git a/firmware/common/sprintf.c b/firmware/common/sprintf.c
index 0b42f66..d1c55d5 100644
--- a/firmware/common/sprintf.c
+++ b/firmware/common/sprintf.c
@@ -181,7 +181,7 @@ int snprintf(char *buf, size_t size, const char *fmt, ...)
     va_list ap;
     struct for_snprintf pr;
 
-    pr.ptr = buf;
+    pr.ptr = (unsigned char *)buf;
     pr.bytes = 0;
     pr.max = size;
 
@@ -200,7 +200,7 @@ int vsnprintf(char *buf, int size, const char *fmt, va_list ap)
     bool ok;
     struct for_snprintf pr;
 
-    pr.ptr = buf;
+    pr.ptr = (unsigned char *)buf;
     pr.bytes = 0;
     pr.max = size;