t4030-diff-textconv: Make octal escape sequence more portable

diff --git a/base85.c b/base85.c
index a9e97f89d9beb51ffd7c8f0be828b8c85358a1ef..b88270f90844095b3d352cc4213cbebd95a7f420 100644 (file)
--- a/base85.c
+++ b/base85.c
@@ -37,7 +37,7 @@ static void prep_base85(void)
        }
 }
 
-int decode_85(char *dst, char *buffer, int len)
+int decode_85(char *dst, const char *buffer, int len)
 {
        prep_base85();
 
@@ -66,7 +66,7 @@ int decode_85(char *dst, char *buffer, int len)
                 */
                if (0x03030303 < acc ||
                    0xffffffff - de < (acc *= 85))
-                       error("invalid base85 sequence %.5s", buffer-5);
+                       return error("invalid base85 sequence %.5s", buffer-5);
                acc += de;
                say1(" %08x", acc);
 
@@ -82,7 +82,7 @@ int decode_85(char *dst, char *buffer, int len)
        return 0;
 }
 
-void encode_85(char *buf, unsigned char *data, int bytes)
+void encode_85(char *buf, const unsigned char *data, int bytes)
 {
        prep_base85();