Move display_options functions to their own header

[karo-tx-uboot.git] / lib / zlib / inffast.c

diff --git a/lib/zlib/inffast.c b/lib/zlib/inffast.c
index 8e823df4cf158bc0e2e23d9b15c5914c68d5d472..0700e04cb9acd8cc15ad38eb341f2ffbc2838612 100644 (file)
--- a/lib/zlib/inffast.c
+++ b/lib/zlib/inffast.c
@@ -66,9 +66,8 @@
       requires strm->avail_out >= 258 for each loop to avoid checking for
       output space.
  */
-void inflate_fast(strm, start)
-z_streamp strm;
-unsigned start;         /* inflate()'s starting value for strm->avail_out */
+void inflate_fast(z_streamp strm, unsigned start)
+/* start: inflate()'s starting value for strm->avail_out */
 {
     struct inflate_state FAR *state;
     unsigned char FAR *in;      /* local strm->next_in */
@@ -100,6 +99,14 @@ unsigned start;         /* inflate()'s starting value for strm->avail_out */
     state = (struct inflate_state FAR *)strm->state;
     in = strm->next_in - OFF;
     last = in + (strm->avail_in - 5);
+    if (in > last && strm->avail_in > 5) {
+        /*
+         * overflow detected, limit strm->avail_in to the
+         * max. possible size and recalculate last
+         */
+       strm->avail_in = 0xffffffff - (uintptr_t)in;
+        last = in + (strm->avail_in - 5);
+    }
     out = strm->next_out - OFF;
     beg = out - (start - strm->avail_out);
     end = out + (strm->avail_out - 257);