Fix seg fault attempting to unget an EOF character.

	PR gas/20898
	* app.c (do_scrub_chars): Do not attempt to unget EOF.

diff --git a/gas/ChangeLog b/gas/ChangeLog
index 76c23ce..a142857 100644 (file)
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,5 +1,8 @@
 2016-12-01  Nick Clifton  <nickc@redhat.com>
 
+       PR gas/20898
+       * app.c (do_scrub_chars): Do not attempt to unget EOF.
+
        PR gas/20897
        * subsegs.c (subsegs_print_statistics): Do nothing if no output
        file was created.

diff --git a/gas/app.c b/gas/app.c
index 6b883a1..dcd8219 100644 (file)
--- a/gas/app.c
+++ b/gas/app.c
@@ -1188,7 +1188,7 @@ do_scrub_chars (size_t (*get) (char *, size_t), char *tostart, size_t tolen)
                  state = -2;
                  break;
                }
-             else
+             else if (ch2 != EOF)
                {
                  UNGET (ch2);
                }