diff -Nru csh-20110502/debian/changelog csh-20110502/debian/changelog
--- csh-20110502/debian/changelog	2020-07-23 10:41:59.000000000 +0200
+++ csh-20110502/debian/changelog	2021-04-23 15:35:22.000000000 +0200
@@ -1,3 +1,12 @@
+csh (20110502-6ubuntu1) devel; urgency=medium
+
+  * Fix FTBFS with glibc 2.32: sys_siglist[] and sys_sigabbrev[] have been
+    deprecated in favor of strsignal()
+    - Refresh d/p/09_sys_signame.diff
+    - Add d/p/glibc-strsignal.diff
+
+ -- Lukas Märdian <slyon@ubuntu.com>  Fri, 23 Apr 2021 15:35:22 +0200
+
 csh (20110502-6) unstable; urgency=medium
 
   * Patch from Etienne Mollier for FTBFS with gcc10. Closes: #957113
diff -Nru csh-20110502/debian/control csh-20110502/debian/control
--- csh-20110502/debian/control	2020-07-23 10:41:59.000000000 +0200
+++ csh-20110502/debian/control	2021-04-23 15:35:22.000000000 +0200
@@ -1,7 +1,8 @@
 Source: csh
 Section: shells
 Priority: optional
-Maintainer: Alastair McKinstry <mckinstry@debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Alastair McKinstry <mckinstry@debian.org>
 Standards-Version: 4.5.0
 Homepage: https://www.openbsd.org/cgi-bin/cvsweb/src/bin/csh/
 Vcs-Browser: https://salsa.debian.org:/mckinstry/bsd-csh.git
diff -Nru csh-20110502/debian/patches/09_sys_signame.diff csh-20110502/debian/patches/09_sys_signame.diff
--- csh-20110502/debian/patches/09_sys_signame.diff	2020-07-23 10:41:59.000000000 +0200
+++ csh-20110502/debian/patches/09_sys_signame.diff	2021-04-23 15:35:22.000000000 +0200
@@ -1,36 +1,24 @@
-Description: Replace BSD-specific sys_signame with GNU-specific sys_sigabbrev
+Description: Replace BSD-specific sys_signame with GNU-specific strsignal
 Forwarded: not-needed
 Author: Matej Vela <vela@debian.org>
-Last-Update: 2011-05-13
+Author: Lukas Märdian <slyon@ubuntu.com>
+Last-Update: 2021-04-23
 
 Index: csh-20110502/proc.c
 ===================================================================
 --- csh-20110502.orig/proc.c
 +++ csh-20110502/proc.c
-@@ -38,6 +38,12 @@
- #include <string.h>
- #include <stdarg.h>
- 
-+/*
-+ * GNU libc doesn't expose sys_sigabbrev in headers, but it's been in use for
-+ * a while: <http://sources.redhat.com/ml/libc-alpha/2002-06/msg00132.html>.
-+ */
-+extern const char *const sys_sigabbrev[];
-+
- #include "csh.h"
- #include "dir.h"
- #include "proc.h"
 @@ -945,16 +951,22 @@
  		signum = atoi(short2str(v[1]));
  		if (signum < 0 || signum >= NSIG)
  		    stderror(ERR_NAME | ERR_BADSIG);
 -		else if (signum == 0)
 -		    (void) fputc('0', cshout); /* 0's symbolic name is '0' */
-+		else if (sys_sigabbrev[signum] == NULL)
++		else if (strsignal(signum) == NULL)
 +		    (void) fprintf(cshout, "%d", signum);
  		else
 -		    (void) fprintf(cshout, "%s ", sys_signame[signum]);
-+		    (void) fprintf(cshout, "%s ", sys_sigabbrev[signum]);
++		    (void) fprintf(cshout, "%s ", strsignal(signum));
  	    } else {
 -		for (signum = 1; signum < NSIG; signum++) {
 -		    (void) fprintf(cshout, "%s ", sys_signame[signum]);
@@ -39,14 +27,14 @@
 -	    	}
 +	        int cur = 0, len;
 +		for (signum = 1; signum < NSIG; signum++)
-+		    if (sys_sigabbrev[signum]) {
-+			len = strlen(sys_sigabbrev[signum]) + 1;
++		    if (strsignal(signum)) {
++			len = strlen(strsignal(signum)) + 1;
 +			cur += len;
 +			if (cur >= 80 - 1) {
 +			    (void) fputc('\n', cshout);
 +			    cur = len;
 +			}
-+			(void) fprintf(cshout, "%s ", sys_sigabbrev[signum]);
++			(void) fprintf(cshout, "%s ", strsignal(signum));
 +		    }
  	    }
  	    (void) fputc('\n', cshout);
@@ -58,10 +46,10 @@
 -		if (!strcasecmp(sys_signame[signum], name) ||
 -		    (strlen(name) > 3 && !strncasecmp("SIG", name, 3) &&
 -		     !strcasecmp(sys_signame[signum], name + 3)))
-+		if (sys_sigabbrev[signum] && \
-+		    (!strcasecmp(sys_sigabbrev[signum], name) ||
++		if (strsignal(signum) && \
++		    (!strcasecmp(strsignal(signum), name) ||
 +		     (strlen(name) > 3 && !strncasecmp("SIG", name, 3) &&
-+		      !strcasecmp(sys_sigabbrev[signum], name + 3))))
++		      !strcasecmp(strsignal(signum), name + 3))))
  			break;
  
  	    if (signum == NSIG) {
diff -Nru csh-20110502/debian/patches/glibc-strsignal.diff csh-20110502/debian/patches/glibc-strsignal.diff
--- csh-20110502/debian/patches/glibc-strsignal.diff	1970-01-01 02:00:00.000000000 +0200
+++ csh-20110502/debian/patches/glibc-strsignal.diff	2021-04-23 15:35:22.000000000 +0200
@@ -0,0 +1,21 @@
+Description: Use strsignal() in favor of sys_siglist[]
+ The sys_siglist, _sys_siglist and sys_sigabbrev arrays have been deprecated.
+ All programs should use strsignal() instead.
+ .
+Author: Lukas Märdian <slyon@ubuntu.com>
+Forwarded: no
+Last-Update: 2021-04-23
+
+---
+--- csh-20110502.orig/proc.c
++++ csh-20110502/proc.c
+@@ -732,8 +732,7 @@ pprint(struct process *pp, bool flag)
+ 			    && (reason != SIGPIPE
+ 				|| (pp->p_flags & PPOU) == 0))) {
+ 			(void) fprintf(cshout, format,
+-				       sys_siglist[(unsigned char)
+-						   pp->p_reason]);
++				       strsignal(pp->p_reason));
+ 			hadnl = 0;
+ 		    }
+ 		    break;
diff -Nru csh-20110502/debian/patches/series csh-20110502/debian/patches/series
--- csh-20110502/debian/patches/series	2020-07-23 10:41:59.000000000 +0200
+++ csh-20110502/debian/patches/series	2021-04-23 15:33:05.000000000 +0200
@@ -12,3 +12,4 @@
 12_glibc_union_wait.diff
 13_fix_arithmetic_precedence.diff
 pointer_deref_comparison.patch
+glibc-strsignal.diff