--- emacs-18.59-orig/src/ChangeLog
+++ emacs-18.59/src/ChangeLog
@@ -1,3 +1,11 @@
+2015-12-19  Ulrich Mueller  <ulm@gentoo.org>
+
+	Fix a couple of compiler warnings.
+	* buffer.c (init_buffer): Use getcwd(3) instead of getwd(3).
+	* callproc.c (Fcall_process): Check for errors of pipe(2).
+	(child_setup): Check for errors of chdir(2).
+	* process.c (sigchld_handler): Add type cast.
+
 2012-06-28  Ulrich Mueller  <ulm@gentoo.org>
 
 	Support x32 ABI on x86_64 architecture.
--- emacs-18.59-orig/src/buffer.c
+++ emacs-18.59/src/buffer.c
@@ -1131,8 +1131,8 @@
   char buf[MAXPATHLEN+1];
 
   Fset_buffer (Fget_buffer_create (build_string ("*scratch*")));
-  if (getwd (buf) == 0)
-    fatal ("`getwd' failed: %s.\n", buf);
+  if (getcwd (buf, MAXPATHLEN+1) == 0)
+    fatal ("`getcwd' failed: %s.\n", buf);
 
 #ifndef VMS
   /* Maybe this should really use some standard subroutine
--- emacs-18.59-orig/src/callproc.c
+++ emacs-18.59/src/callproc.c
@@ -184,7 +184,10 @@
 #endif /* not VMS */
   else
     {
-      pipe (fd);
+      if (pipe (fd) < 0) {
+	close (filefd);
+	report_file_error ("Creating pipe", Qnil);
+      }
 #if 0
       /* Replaced by close_process_descs */
       set_exclusive_use (fd[0]);
@@ -362,7 +365,8 @@
       bcopy (XSTRING (current_buffer->directory)->data, temp, i);
       if (temp[i - 1] != '/') temp[i++] = '/';
       temp[i] = 0;
-      chdir (temp);
+      if (chdir (temp) < 0)
+	_exit (1);
     }
 
 #ifndef MAINTAIN_ENVIRONMENT
--- emacs-18.59-orig/src/process.c
+++ emacs-18.59/src/process.c
@@ -2517,7 +2517,7 @@
 	  if (WIFEXITED (w))
 	    synch_process_retcode = WRETCODE (w);
 	  else if (WIFSIGNALED (w))
-	    synch_process_death = sys_siglist[WTERMSIG (w)];
+	    synch_process_death = (char *) sys_siglist[WTERMSIG (w)];
 	}
 
       /* On some systems, we must return right away.
--- emacs-18.59-orig/etc/ChangeLog
+++ emacs-18.59/etc/ChangeLog
@@ -1,3 +1,7 @@
+2015-12-19  Ulrich Mueller  <ulm@gentoo.org>
+
+	* etags.c (main): Check for errors of system(3).
+
 2012-06-28  Ulrich Mueller  <ulm@gentoo.org>
 
 	* fakemail.c (make_file_preface): time(2) returns a value of
--- emacs-18.59-orig/etc/etags.c
+++ emacs-18.59/etc/etags.c
@@ -342,7 +342,8 @@
 	  sprintf(cmd,
 		  "mv %s OTAGS;fgrep -v '\t%s\t' OTAGS >%s;rm OTAGS",
 		  outfile, av[i], outfile);
-	  system(cmd);
+	  if (system(cmd) != 0)
+	    fatal ("%s", "failed to execute shell command");
 	}
       aflag++;
     }
@@ -359,7 +360,8 @@
   if (uflag)
     {
       sprintf(cmd, "sort %s -o %s", outfile, outfile);
-      system(cmd);
+      if (system(cmd) != 0)
+	fatal ("%s", "failed to execute shell command");
     }
 #endif
   exit(GOOD);