gzip: test invalid-input bug

* NEWS: Mention the bug.
* tests/unpack-invalid: Test for the bug.

2 files changed, 7 insertions, 0 deletions

diff --git a/NEWS b/NEWS
index 1074c66..364811a 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,12 @@ GNU gzip NEWS                                    -*- outline -*-
 
 * Noteworthy changes in release ?.? (????-??-??) [?]
 
+** Bug fixes
+
+  'gzip -d' no longer fails to report invalid compressed data
+  that uses a dictionary distance outside the input window.
+  [bug present since the beginning]
+
 
 * Noteworthy changes in release 1.12 (2022-04-07) [stable]
 
diff --git a/tests/unpack-invalid b/tests/unpack-invalid
index 14984a1..f659aa8 100755
--- a/tests/unpack-invalid
+++ b/tests/unpack-invalid
@@ -22,6 +22,7 @@
 
 fail=0
 for input in \
+  '\37\213\b\0\0\0\0\0\0\3s\212\31204t\214T\v\216\274)q)\210\201A\341\377\377\37\f\23\30B\4\30\30\27+\\aih`hpd8\300\252\320\300\310\300\340\300\300\330\340\350\300\261\200!$\331M\201!\205q\341\253\214o+LM\331W\2300\310-|\305\300\256r\341\213\377\357\312\266$N\16E6\206\24\206\365\346\22\253\332L3l\366\334]]\244\275lM\355I\241;\377\343x\23\26M9\330\252\375\261\\%%\270\225\223wb\257\252\2\302\5\336\377\205\302\30\30\30\243$\03700010214\b0\260002p.`0dv\270 5o\371+7\237\366%%WL\246YMZ\234\367FN\277{\247\322\34\r\17\325\377\235\332\20\177\0\0@\23a\3\315\0\0\0' \
   '\037\036\000\000\037\213\010\000\000\000\000\000\002\003\036\000\000\000\002\003\037\213\010\000\000\000\000\000\002\003\355\301\001\015\000\000\000\302\240\037\000\302\240\037\213\010\000\000\000\000\000\002\003\355\301' \
   '\037\213\010\000\000\000\000\000\002\003\355\301\001\015\000\000\000\302\240\076\366\017\370\036\016\030\000\000\000\000\000\000\000\000\000\034\010\105\140\104\025\020\047\000\000\037\036\016\030\000\000\000'; do