* src/devices/grotty/tty.cc (tty_printer::make_rgb_string): Avoid

null-bytes in created string.

* src/roff/troff/input.cc (lookup_color, interpolate_macro,
alias_macro, lookup_request): Improve warning messages.

* src/roff/troff/node.cc (suppress_node::tprint): Use `strsave',
not `strdup'.
Free `last_image_filename'.

* src/preproc/html/pre-html.cc (char_block::char_block): Initialize
`buffer'.
(imageList::createPage, imageList::createImage): Use `free', not
`a_delete'.
(imageItem::~imageItem): Free `imageName'.
(addRegDef): Use `strsave', not `strdup'.
(get_resolution): Free `pathp'.

1 files changed, 9 insertions, 2 deletions

diff --git a/src/devices/grotty/tty.cc b/src/devices/grotty/tty.cc
index 13a0b015..984ed6ca 100644
--- a/src/devices/grotty/tty.cc
+++ b/src/devices/grotty/tty.cc
@@ -213,14 +213,21 @@ char *tty_printer::make_rgb_string(unsigned int r,
 				   unsigned int g,
 				   unsigned int b)
 {
-  char *s = new char[7];
+  char *s = new char[8];
   s[0] = char(r >> 8);
   s[1] = char(r & 0xff);
   s[2] = char(g >> 8);
   s[3] = char(g & 0xff);
   s[4] = char(b >> 8);
   s[5] = char(b & 0xff);
-  s[6] = 0;
+  s[6] = 0x80;
+  s[7] = 0;
+  // avoid null-bytes in string
+  for (int i = 0; i < 6; i++)
+    if (!s[i]) {
+      s[i] = 1;
+      s[6] |= 1 << i;
+    }
   return s;
 }