From a74ef66ac82edd5a587606daef57ff6c26279280 Mon Sep 17 00:00:00 2001
From: Jeremy Hylton <jeremy@alum.mit.edu>
Date: Wed, 13 Aug 1997 21:39:18 +0000
Subject: [PATCH] Must update the available space in the output buffer after
 realloc. (Fixed in PyZlib_unflush.)

---
 Modules/zlibmodule.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Modules/zlibmodule.c b/Modules/zlibmodule.c
index 04ffabbaee..1edfab40da 100644
--- a/Modules/zlibmodule.c
+++ b/Modules/zlibmodule.c
@@ -449,7 +449,9 @@ PyZlib_objdecompress(self, args)
       self->zst.next_out=buf+length;
       self->zst.avail_out=ADDCHUNK;
       length += ADDCHUNK;
+
       err=inflate(&(self->zst), Z_NO_FLUSH);
+      
     } while (self->zst.avail_in!=0 && err==Z_OK);
   if (err!=Z_OK && err!=Z_STREAM_END) 
     {
@@ -547,6 +549,7 @@ PyZlib_unflush(self, args)
 	  return NULL;
 	}
       self->zst.next_out=buf+length;
+      self->zst.avail_out = ADDCHUNK;
       length += ADDCHUNK;
       err=inflate(&(self->zst), Z_FINISH);
     } while (err==Z_OK);
-- 
2.50.1