--- binutils.orig/binutils/readelf.c	2017-07-24 15:27:09.859116315 +0100
+++ binutils-2.29/binutils/readelf.c	2017-07-24 15:30:33.557770525 +0100
@@ -18414,39 +18414,50 @@ process_archive (char * file_name, FILE
 static bfd_boolean
 process_file (char * file_name)
 {
+  char * name;
+  char * saved_program_name;
   FILE * file;
   struct stat statbuf;
   char armag[SARMAG];
   bfd_boolean ret = TRUE;
 
+  /* Overload program_name to include file_name.  Doing this means
+     that warning/error messages will positively identify the file
+     concerned even when multiple instances of readelf are running.  */
+  name = xmalloc (strlen (program_name) + strlen (file_name) + 3);
+  sprintf (name, "%s: %s", program_name, file_name);
+  saved_program_name = program_name;
+  program_name = name;
+
   if (stat (file_name, &statbuf) < 0)
     {
       if (errno == ENOENT)
-	error (_("'%s': No such file\n"), file_name);
+	error (_("No such file\n"));
       else
-	error (_("Could not locate '%s'.  System error message: %s\n"),
-	       file_name, strerror (errno));
-      return FALSE;
+	error (_("Could not locate file.  System error message: %s\n"),
+	       strerror (errno));
+      goto done;
     }
 
   if (! S_ISREG (statbuf.st_mode))
     {
-      error (_("'%s' is not an ordinary file\n"), file_name);
-      return FALSE;
+      error (_("Not an ordinary file\n"));
+      goto done;
     }
 
   file = fopen (file_name, "rb");
   if (file == NULL)
     {
-      error (_("Input file '%s' is not readable.\n"), file_name);
-      return FALSE;
+      error (_("Not readable\n"));
+      goto done;
     }
 
   if (fread (armag, SARMAG, 1, file) != 1)
     {
-      error (_("%s: Failed to read file's magic number\n"), file_name);
+      error (_("Failed to read file's magic number\n"));
       fclose (file);
-      return FALSE;
+      ret = FALSE;
+      goto done;
     }
 
   current_file_size = (bfd_size_type) statbuf.st_size;
@@ -18474,7 +18484,10 @@ process_file (char * file_name)
     }
 
   fclose (file);
+ done:
   current_file_size = 0;
+  free (program_name);
+  program_name = saved_program_name;
 
   return ret;
 }