ascii: Avoid buffer overread outputting page longer than allocated lines.

[pspp] / src / data / data-out.c

diff --git a/src/data/data-out.c b/src/data/data-out.c
index c6e793bd71488ef8a7c85997ce879ad61329dcc9..cbd114b8e58cf8399caba921df0c12168cca4b90 100644 (file)
--- a/src/data/data-out.c
+++ b/src/data/data-out.c
@@ -113,7 +113,7 @@ data_out_recode (const union value *input, const char *input_encoding,
   assert (fmt_check_output (format));
   if (format->type == FMT_A)
     {
-      char *in = CHAR_CAST (char *, value_str (input, format->w));
+      char *in = CHAR_CAST (char *, input->s);
       char *out = recode_string (output_encoding, input_encoding,
                                  in, format->w);
       ds_put_cstr (output, out);
@@ -157,21 +157,21 @@ binary_to_utf8 (const char *in, struct pool *pool)
    VALUE must be the correct width for FORMAT, that is, its width must be
    fmt_var_width(FORMAT).
 
-   ENCODING must be the encoding of INPUT.  Normally this can be obtained by
-   calling dict_get_encoding() on the dictionary with which INPUT is
-   associated.  ENCODING is only important when FORMAT's type is FMT_A.
+   INPUT_ENCODING must be the encoding of INPUT.  Normally this can be obtained
+   by calling dict_get_encoding() on the dictionary with which INPUT is
+   associated.  INPUT_ENCODING is only important when FORMAT's type is FMT_A.
 
    The return value is dynamically allocated, and must be freed by the caller.
    If POOL is non-null, then the return value is allocated on that pool.  */
 char *
-data_out_pool (const union value *input, const char *encoding,
+data_out_pool (const union value *input, const char *input_encoding,
               const struct fmt_spec *format, struct pool *pool)
 {
   assert (fmt_check_output (format));
   if (format->type == FMT_A)
     {
-      char *in = CHAR_CAST (char *, value_str (input, format->w));
-      return recode_string_pool (UTF8, encoding, in, format->w, pool);
+      char *in = CHAR_CAST (char *, input->s);
+      return recode_string_pool (UTF8, input_encoding, in, format->w, pool);
     }
   else if (fmt_get_category (format->type) == FMT_CAT_BINARY)
     {
@@ -224,9 +224,10 @@ data_out_stretchy (const union value *input, const char *encoding,
 }
 
 char *
-data_out (const union value *input, const char *encoding, const struct fmt_spec *format)
+data_out (const union value *input, const char *input_encoding,
+          const struct fmt_spec *format)
 {
-  return data_out_pool (input, encoding, format, NULL);
+  return data_out_pool (input, input_encoding, format, NULL);
 }
 
 \f
@@ -620,7 +621,7 @@ static void
 output_AHEX (const union value *input, const struct fmt_spec *format,
              char *output)
 {
-  output_hex (value_str (input, format->w / 2), format->w / 2, output);
+  output_hex (input->s, format->w / 2, output);
 }
 \f
 /* Decimal and scientific formatting. */