1 files changed, 8 insertions, 2 deletions

diff --git a/infutil.h b/infutil.h
index 30b230d..2aabf3c 100644
--- a/infutil.h
+++ b/infutil.h
@@ -22,7 +22,7 @@ struct inflate_blocks_state {
       CODES,    /* processing fixed or dynamic block */
       DRY,      /* output remaining window bytes */
       DONE,     /* finished last block, done */
-      ERROR}    /* got a data error--stuck here */
+      INF_ERROR}/* got a data error--stuck here */
     mode;               /* current inflate_block mode */
 
   /* mode dependent information */
@@ -63,7 +63,13 @@ struct inflate_blocks_state {
 #define LOADIN {p=z->next_in;n=z->avail_in;b=s->bitb;k=s->bitk;}
 #define NEEDBYTE {if(n)r=Z_OK;else LEAVE}
 #define NEXTBYTE (n--,*p++)
-#define NEEDBITS(j) {while(k<(j)){NEEDBYTE;b|=((uLong)NEXTBYTE)<<k;k+=8;}}
+#ifdef __TURBOC__ /* bug in TurboC compiler, bad code for b << 0 */
+#  define NEEDBITS(j) {\
+  while(k<(j)){NEEDBYTE;b=k?b|(((uLong)NEXTBYTE)<<k):NEXTBYTE;k+=8;}\
+}
+#else
+#  define NEEDBITS(j) {while(k<(j)){NEEDBYTE;b|=((uLong)NEXTBYTE)<<k;k+=8;}}
+#endif
 #define DUMPBITS(j) {b>>=(j);k-=(j);}
 /*   output bytes */
 #define WAVAIL (q<s->read?s->read-q-1:s->end-q)