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src/util.h

@@ -51,10 +51,10 @@ void *ccalloc(size_t num, size_t size);
 
 /* sets buf_out to a pointer to a byte buffer which must be freed. */
 /* returns the size of this buffer. */
-int64_t file_to_bytes(char *path, unsigned char **buf_out);
+int64_t file_to_bytes(const char *path, unsigned char **buf_out);
 
 /* returns a pointer to a string which must be freed */
-char *file_to_str(char *path);
+char *file_to_str(const char *path);
 
 
 /* returns true if str ends with suffix */