--- texinfo-3.12/util/install-info.c.fix	Thu Sep 24 14:59:11 1998
+++ texinfo-3.12/util/install-info.c	Thu Sep 24 15:01:09 1998
@@ -1019,7 +1019,7 @@
         break;
 
       filled += nread;
-      if (filled == data_size)
+      if (filled >= data_size - 1)
         {
           data_size *= 2;
           data = (char *) xrealloc (data, data_size);
@@ -1061,7 +1061,7 @@
     {
       if (lineflag)
         {
-          if (filled == lines_allocated)
+          if (filled == lines_allocated - 1)
             {
               lines_allocated *= 2;
               lines = (struct line_data *) xrealloc (lines, lines_allocated * sizeof (struct line_data));