Fix for failing exit command causes inginite loop

Added upstream patch: tcsh-6.21.00-000-failing-exit-command-causes-infinite-loop.patch

tcsh-6.21.00-000-failing-exit-command-causes-infinite-loop.patch

@@ -0,0 +1,42 @@
+diff --git a/sh.c b/sh.c
+index 4b5c624..dd87172 100644
+--- a/sh.c
++++ b/sh.c
+@@ -237,6 +237,7 @@ main(int argc, char **argv)
+     int nofile = 0;
+     volatile int nverbose = 0;
+     volatile int rdirs = 0;
++    volatile int exitcode = 0;
+     int quitit = 0;
+     Char *cp;
+ #ifdef AUTOLOGOUT
+@@ -1390,6 +1391,12 @@ main(int argc, char **argv)
+     
+ 
+     if (targinp) {
++	/* If this -c command caused an error before, skip processing */
++	if (reenter && arginp) {
++	    exitcode = 1;
++	    goto done;
++	}
++
+ 	arginp = SAVE(targinp);
+ 	/*
+ 	 * we put the command into a variable
+@@ -1422,6 +1429,7 @@ main(int argc, char **argv)
+      */
+     process(setintr);
+ 
++done:
+     /*
+      * Mop-up.
+      */
+@@ -1443,7 +1451,7 @@ main(int argc, char **argv)
+     }
+     record();
+     exitstat();
+-    return (0);
++    return exitcode;
+ }
+ 
+ void

tcsh.spec

@@ -13,7 +13,7 @@
 Name:             tcsh
 Summary:          An enhanced version of csh, the C shell
 Version:          6.21.00
-Release:          2%{?dist}
+Release:          3%{?dist}
 License:          BSD
 
 URL:              http://www.tcsh.org/
@@ -42,7 +42,7 @@ BuildRequires:    ncurses-devel
 
 # Upstream patches -- official upstream patches released by upstream since the
 # ----------------    last rebase that are necessary for any reason:
-
+Patch000: tcsh-6.21.00-000-failing-exit-command-causes-infinite-loop.patch
 
 # Downstream patches -- these should be always included when doing rebase:
 # ------------------
@@ -176,6 +176,9 @@ fi
 # =============================================================================
 
 %changelog
+* Fri Oct 25 2019 Jan Macku <jamacku@redhat.com> - 6.21.00-3
+- Added upstream patch to fix infinite loop caused by exit command
+
 * Sat Jul 27 2019 Fedora Release Engineering <releng@fedoraproject.org> - 6.21.00-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild