bug(s) in 2.5.19 skel.c

[Bruce Lilly]

The lexical analyzer produced by 2.5.19 corrupts memory
in some cases.  After a long period of debugging (hampered
by the difficulty of using a meaningful debugging version
of malloc with flex), I have traced the problem to random
garbage (uninitialized data) in some of the yyguts structure.
The attached patch addresses the problem for YY_USES_REJECT.
There might be a similar problem with YY_TEXT_IS_ARRAY, but
I haven't addressed that.

Best regards,
  Bruce Lilly

*** skel.c.orig Sat Sep 14 22:32:14 2002
--- skel.c      Sat Sep 14 22:33:46 2002
***************
*** 2028,2033 ****
--- 2028,2040 ----
    "    YY_G(yy_start_stack_depth) = 0;",
    "    YY_G(yy_start_stack) = (int *) 0;",
    "",
+   "#ifdef YY_USES_REJECT",
+   "    YY_G(yy_state_buf) = 0;",
+   "    YY_G(yy_state_ptr) = 0;",
+   "    YY_G(yy_full_match) = 0;",
+   "    YY_G(yy_lp) = 0;",
+   "#endif",
+   "",
    "/* Defined in main.c */",
    "#ifdef YY_STDINIT",
    "    yyin = stdin;",