Patch cherry-picked from resolution of
http://www.midnight-commander.org/ticket/3114

--- a/lib/tty/key.c	(revision 0ed4a91d7df4e50512defd2e0734ecab7c9da07f)
+++ b/lib/tty/key.c	(revision d870aedad1907773f8586fe818a89e6b5178b849)
@@ -1947,4 +1947,5 @@
 {
     int c;
+    int flag = 0;               /* Return value from select */
 #ifdef HAVE_LIBGPM
     static struct Gpm_Event ev; /* Mouse event */
@@ -1979,5 +1980,4 @@
     {
         int nfd;
-        static int flag = 0;    /* Return value from select */
         fd_set select_set;
 
--- a/lib/tty/tty-ncurses.c	(revision bb65b467900ea9eb1f7867c059fd26fac86c747c)
+++ b/lib/tty/tty-ncurses.c	(revision d870aedad1907773f8586fe818a89e6b5178b849)
@@ -50,4 +50,5 @@
 #include "tty.h"
 #include "color-internal.h"
+#include "key.h"
 #include "mouse.h"
 #include "win.h"
@@ -531,4 +532,5 @@
     {
         int res;
+        unsigned char str[UTF8_CHAR_LEN + 1];
 
         res = g_unichar_to_utf8 (c, (char *) str);
@@ -541,5 +543,4 @@
         else
         {
-            unsigned char str[UTF8_CHAR_LEN + 1];
             const char *s;
 
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<tr><td><span title='2018-08-25 16:23:36 +0200'>2018-08-25</span></td><td><a href='/guix/commit/gnu/packages/m4.scm?id=95895d53b06015fa74f07643cf98f86ae21551d7'>gnu: m4: Fix FTBFS with glibc &gt;= 2.28.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2018-02-20 19:29:16 +0100'>2018-02-20</span></td><td><a href='/guix/commit/gnu/packages/m4.scm?id=05d86d70d9bc19d08716460f40976b74b97b6031'>gnu: m4: Update phase style.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2017-03-30 22:59:53 +0200'>2017-03-30</span></td><td><a href='/guix/commit/gnu/packages/m4.scm?id=84157bb8bf2c610584e0836047da4c710f8eaf76'>Merge branch 'master' into core-updates</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>
<tr><td><span title='2017-03-30 01:30:16 +0200'>2017-03-30</span></td><td><a href='/guix/commit/gnu/packages/m4.scm?id=6fd52309b8f52c9bb59fccffac53e029ce94b698'>gnu: Use HTTPS for almost all gnu.org HOME-PAGEs.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2017-01-06 17:16:02 -0500'>2017-01-06</span></td><td><a href='/guix/commit/gnu/packages/m4.scm?id=fa6428a19f8547b479abaab776cf1f3342d04445'>gnu: m4: Don't replace 'sh' reference with 'bash'.</a><span class='msg-avail'>...</span></td><td>Leo Famulari</td></tr>
<tr><td><span title='2017-01-03 19:57:22 +0100'>2017-01-03</span></td><td><a href='/guix/commit/gnu/packages/m4.scm?id=0c1b29db3ae1909abb3f074a2276f70cee4ab014'>gnu: m4: Update to 1.4.18.</a><span class='msg-avail'>...</span></td><td>Marius Bakke</td></tr>