gentoo-overlay/net-ftp/proftpd/files/proftpd-1.3.7a-tinfow-segv.patch

https://github.com/proftpd/proftpd/commit/ff413723328da726d1042c7d2067d088765eca57
https://bugs.gentoo.org/777432

From ff413723328da726d1042c7d2067d088765eca57 Mon Sep 17 00:00:00 2001
From: TJ Saunders <tj@castaglia.org>
Date: Sun, 14 Mar 2021 10:08:02 -0700
Subject: [PATCH] Issue #1174: Check for the libtinfow library when ncursesw is
 being used.

On some systems, such as Gentoo, linking against libtinfo with libncursesw,
rather than libtinfow, leads to segfaults.
---
 config.h.in  |  3 ++
 configure    | 98 +++++++++++++++++++++++++++++++++++++++++++++++++---
 configure.in | 24 +++++++++----
 3 files changed, 114 insertions(+), 11 deletions(-)

diff --git a/config.h.in b/config.h.in
index 1ba33caf9..775b7a294 100644
--- a/config.h.in
+++ b/config.h.in
@@ -966,6 +966,9 @@
 /* Define if you have the libtinfo library (-ltinfo).  */
 #undef HAVE_LIBTINFO
 
+/* Define if you have the libtinfow library (-ltinfow).  */
+#undef HAVE_LIBTINFOW
+
 /* Define if you have the addrinfo struct.  */
 #undef HAVE_STRUCT_ADDRINFO
 
diff --git a/configure b/configure
index 64080483f..86cf1360e 100755
--- a/configure
+++ b/configure
@@ -23169,18 +23169,106 @@ $as_echo "#define PR_USE_CURSES 1" >>confdefs.h
 fi
 
 if test x"$enable_ncurses" != xno ; then
+
   if test x"$pr_have_ncursesw" = xyes ; then
 
 $as_echo "#define PR_USE_NCURSESW 1" >>confdefs.h
 
-  else
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for halfdelay in -ltinfow" >&5
+$as_echo_n "checking for halfdelay in -ltinfow... " >&6; }
+if ${ac_cv_lib_tinfow_halfdelay+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ltinfow  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
 
-$as_echo "#define PR_USE_NCURSES 1" >>confdefs.h
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char halfdelay ();
+int
+main ()
+{
+return halfdelay ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_tinfow_halfdelay=yes
+else
+  ac_cv_lib_tinfow_halfdelay=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_tinfow_halfdelay" >&5
+$as_echo "$ac_cv_lib_tinfow_halfdelay" >&6; }
+if test "x$ac_cv_lib_tinfow_halfdelay" = xyes; then :
+   UTILS_LIBS="$UTILS_LIBS -ltinfow"
 
-  fi
+$as_echo "#define HAVE_LIBTINFOW 1" >>confdefs.h
+
+
+else
+   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for halfdelay in -ltinfo" >&5
+$as_echo_n "checking for halfdelay in -ltinfo... " >&6; }
+if ${ac_cv_lib_tinfo_halfdelay+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ltinfo  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char halfdelay ();
+int
+main ()
+{
+return halfdelay ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_tinfo_halfdelay=yes
+else
+  ac_cv_lib_tinfo_halfdelay=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_tinfo_halfdelay" >&5
+$as_echo "$ac_cv_lib_tinfo_halfdelay" >&6; }
+if test "x$ac_cv_lib_tinfo_halfdelay" = xyes; then :
+   UTILS_LIBS="$UTILS_LIBS -ltinfo"
+
+$as_echo "#define HAVE_LIBTINFO 1" >>confdefs.h
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for halfdelay in -ltinfo" >&5
+
+fi
+
+
+fi
+
+  else
+
+$as_echo "#define PR_USE_NCURSES 1" >>confdefs.h
+
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for halfdelay in -ltinfo" >&5
 $as_echo_n "checking for halfdelay in -ltinfo... " >&6; }
 if ${ac_cv_lib_tinfo_halfdelay+:} false; then :
   $as_echo_n "(cached) " >&6
@@ -23224,6 +23312,8 @@ $as_echo "#define HAVE_LIBTINFO 1" >>confdefs.h
 
 fi
 
+  fi
+fi
 
 if test x"$enable_nonblocking_log_open" != xno; then
 
diff --git a/configure.in b/configure.in
index 59793a00c..4bd0f7c19 100644
--- a/configure.in
+++ b/configure.in
@@ -2789,20 +2789,30 @@ if test x"$enable_curses" != xno ; then
 fi
 
 if test x"$enable_ncurses" != xno ; then
+  dnl Check for the libtinfo library, which contains the halfdelay() curses
+  dnl function on some systems (e.g. OpenSuSE); see Bug#3718.  Note that on
+  dnl some systems, this may need to be libtinfow instead; see Issue #1174.
+
   if test x"$pr_have_ncursesw" = xyes ; then
     AC_DEFINE(PR_USE_NCURSESW, 1, [Define if using ncursesw support])
+    AC_CHECK_LIB(tinfow, halfdelay,
+      [ UTILS_LIBS="$UTILS_LIBS -ltinfow"
+        AC_DEFINE(HAVE_LIBTINFOW, 1, [Define if you have libtinfow])
+      ],
+      [ AC_CHECK_LIB(tinfo, halfdelay,
+        [ UTILS_LIBS="$UTILS_LIBS -ltinfo"
+          AC_DEFINE(HAVE_LIBTINFO, 1, [Define if you have libtinfo])
+        ])
+      ])
   else
     AC_DEFINE(PR_USE_NCURSES, 1, [Define if using ncurses support])
+    AC_CHECK_LIB(tinfo, halfdelay,
+      [ UTILS_LIBS="$UTILS_LIBS -ltinfo"
+        AC_DEFINE(HAVE_LIBTINFO, 1, [Define if you have libtinfo])
+      ])
   fi
 fi
 
-dnl Check for the libtinfo library, which contains the halfdelay() curses
-dnl function on some systems (e.g. OpenSuSE); see Bug#3718.
-AC_CHECK_LIB(tinfo, halfdelay,
-  [ UTILS_LIBS="$UTILS_LIBS -ltinfo"
-    AC_DEFINE(HAVE_LIBTINFO, 1, [Define if you have libtinfo])
-  ])
-
 if test x"$enable_nonblocking_log_open" != xno; then
   AC_DEFINE(PR_USE_NONBLOCKING_LOG_OPEN, 1, [Define if using nonblocking open of log files])
 fi