Typing C-c (SIGINT) in a screen session (Debian package 4.0.3-14; -11 is fine):

• shell prompt: no reaction (nothing printed)
• sleep 10 running: ^C printed, but SIGINT is not sent.

Debian bug #522689#38.

Revisit this issue: Debian bug #97343 -- special handling of TIOCSCTTY depending on __GNU__.

#ifdef linux and friends are used in quite a number of places.

All diffs are GNU/Linux vs. GNU/Hurd.

 /*
  * If your system supports BSD4.4's seteuid() and setegid(), define
  * HAVE_SETEUID.
  */
-/* #undef HAVE_SETEUID */
+#define HAVE_SETEUID 1

TODO: check.

 /*
  * define HAVE_SVR4_PTYS if you have a /dev/ptmx character special
  * device and support the ptsname(), grantpt(), unlockpt() functions.
  */
-#define HAVE_SVR4_PTYS 1
+/* #undef HAVE_SVR4_PTYS */

 /*
  * define HAVE_GETPT if you have the getpt() function.
  */
 #define HAVE_GETPT 1

 /*
  * define HAVE_OPENPTY if your system has the openpty() call.
  */
-/* #undef HAVE_OPENPTY */
+#define HAVE_OPENPTY 1

 /* 
  * define PTYRANGE0 and or PTYRANGE1 if you want to adapt screen
  * to unusual environments. E.g. For SunOs the defaults are "qpr" and 
  * "0123456789abcdef". For SunOs 4.1.2 
  * #define PTYRANGE0 "pqrstuvwxyzPQRST" 
  * is recommended by Dan Jacobson.
  */
-/* #undef PTYRANGE0 */
-/* #undef PTYRANGE1 */
+#define PTYRANGE0 "pq"
+#define PTYRANGE1 "0123456789abcdefghijklmnopqrstuv"

TODO: check: HAVE_SVR4_PTYS is due to configure.in doing test -c /dev/ptmx. But: even if we don't have that file, we still have ptsname, grantpt, unlockpt.

 gcc -c -I. -I.    -g -O2 -O2 -g -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers pty.c
+pty.c: In function 'OpenPTY':
+pty.c:323: warning: implicit declaration of function 'openpty'
+pty.c: At top level:
+pty.c:75: warning: 'PtyName' defined but not used
+pty.c:86: warning: 'PtyProto' defined but not used
+pty.c:87: warning: 'TtyProto' defined but not used

TODO: check.

--- linux/osdef.h       2009-10-06 18:43:53.000000000 +0200
+++ screen-4.0.3/osdef.h        2009-10-06 18:49:49.000000000 +0200
@@ -42,13 +42,19 @@
 #endif

 #ifdef SYSV
+extern char *strchr __P((char *, int));
+extern char *strrchr __P((char *, int));
+extern char *memset __P((char *, int, int));
+extern int   memcmp __P((char *, char *, int));
 #else
 #endif

 #ifndef USEBCOPY
 # ifdef USEMEMCPY
+extern void  memcpy __P((char *, char *, int));
 # else
 #  ifdef USEMEMMOVE
+extern void  memmove __P((char *, char *, int));
 #  else
 #  endif
 # endif

TODO: check.

• screen dead session