Updated comment regarding 0-based vs. 1-based arrays for -CF.

diff --git a/gen.c b/gen.c
index 11dfb504b18c5232f7e20d6235da335ff59bbe9e..71f66017132c21dc9fe5945c9150f8e0863c95e5 100644 (file)
--- a/gen.c
+++ b/gen.c
@@ -45,8 +45,10 @@ static int indent_level = 0; /* each level is 8 spaces */
 #define indent_down() (--indent_level)
 #define set_indent(indent_val) indent_level = indent_val
 
-/* *Everything* is done in terms of arrays starting at 1, so provide
- * a null entry for the zero element of all C arrays.
+/* Almost everything is done in terms of arrays starting at 1, so provide
+ * a null entry for the zero element of all C arrays.  (The exception
+ * to this is that the fast table representation generally uses the
+ * 0 elements of its arrays, too.)
  */
 static char C_int_decl[] = "static const int %s[%d] =\n    {   0,\n";
 static char C_short_decl[] = "static const short int %s[%d] =\n    {   0,\n";
@@ -169,16 +171,17 @@ void genctbl()
        /* So that "make test" won't show arb. differences. */
        nxt[tblend + 2] = 0;
 
-       /* Make sure every state has a end-of-buffer transition and an
+       /* Make sure every state has an end-of-buffer transition and an
         * action #.
         */
        for ( i = 0; i <= lastdfa; ++i )
                {
-               register int anum = dfaacc[i].dfaacc_state;
+               int anum = dfaacc[i].dfaacc_state;
+               int offset = base[i];
 
-               chk[base[i]] = EOB_POSITION;
-               chk[base[i] - 1] = ACTION_POSITION;
-               nxt[base[i] - 1] = anum;        /* action number */
+               chk[offset] = EOB_POSITION;
+               chk[offset - 1] = ACTION_POSITION;
+               nxt[offset - 1] = anum; /* action number */
                }
 
        for ( i = 0; i <= tblend; ++i )