Index: perly.c
***************
*** 12,83 ****
      deprecate("\"do\" to call subroutines");
  }
  
- #line 29 "perly.y"
- typedef union {
-     I32	ival;
-     char *pval;
-     OP *opval;
-     GV *gvval;
- } YYSTYPE;
- #line 23 "y.tab.c"
- #define WORD 257
- #define METHOD 258
- #define FUNCMETH 259
- #define THING 260
- #define PMFUNC 261
- #define PRIVATEREF 262
- #define FUNC0SUB 263
- #define UNIOPSUB 264
- #define LSTOPSUB 265
- #define LABEL 266
- #define FORMAT 267
- #define SUB 268
- #define ANONSUB 269
- #define PACKAGE 270
- #define USE 271
- #define WHILE 272
- #define UNTIL 273
- #define IF 274
- #define UNLESS 275
- #define ELSE 276
- #define ELSIF 277
- #define CONTINUE 278
- #define FOR 279
- #define LOOPEX 280
- #define DOTDOT 281
- #define FUNC0 282
- #define FUNC1 283
- #define FUNC 284
- #define RELOP 285
- #define EQOP 286
- #define MULOP 287
- #define ADDOP 288
- #define DOLSHARP 289
- #define DO 290
- #define HASHBRACK 291
- #define NOAMP 292
- #define LOCAL 293
- #define MY 294
- #define OROP 295
- #define ANDOP 296
- #define NOTOP 297
- #define LSTOP 298
- #define ASSIGNOP 299
- #define OROR 300
- #define ANDAND 301
- #define BITOROP 302
- #define BITANDOP 303
- #define UNIOP 304
- #define SHIFTOP 305
- #define MATCHOP 306
- #define UMINUS 307
- #define REFGEN 308
- #define POWOP 309
- #define PREINC 310
- #define PREDEC 311
- #define POSTINC 312
- #define POSTDEC 313
- #define ARROW 314
  #define YYERRCODE 256
  short yylhs[] = {                                        -1,
     40,    0,    7,    5,    8,    9,    6,   10,   10,   10,
--- 12,17 ----
***************
*** 1316,1342 ****
  int yynerrs;
  int yyerrflag;
  int yychar;
- short *yyssp;
- YYSTYPE *yyvsp;
  YYSTYPE yyval;
  YYSTYPE yylval;
- short yyss[YYSTACKSIZE];
- YYSTYPE yyvs[YYSTACKSIZE];
- #define yystacksize YYSTACKSIZE
  #line 631 "perly.y"
   /* PROGRAM */
  #line 1329 "y.tab.c"
  #define YYABORT goto yyabort
  #define YYACCEPT goto yyaccept
  #define YYERROR goto yyerrlab
  int
  yyparse()
  {
      register int yym, yyn, yystate;
  #if YYDEBUG
      register char *yys;
      extern char *getenv();
  
      if (yys = getenv("YYDEBUG"))
      {
          yyn = *yys;
--- 1250,1316 ----
  int yynerrs;
  int yyerrflag;
  int yychar;
  YYSTYPE yyval;
  YYSTYPE yylval;
  #line 631 "perly.y"
   /* PROGRAM */
  #line 1329 "y.tab.c"
  #define YYABORT goto yyabort
  #define YYACCEPT goto yyaccept
  #define YYERROR goto yyerrlab
+ 
+ struct ysv {
+     short* yyss;
+     YYSTYPE* yyvs;
+     int oldyydebug;
+     int oldyynerrs;
+     int oldyyerrflag;
+     int oldyychar;
+     YYSTYPE oldyyval;
+     YYSTYPE oldyylval;
+ };
+ 
+ void
+ yydestruct(ptr)
+ void* ptr;
+ {
+     struct ysv* ysave = (struct ysv*)ptr;
+     if (ysave->yyss) Safefree(ysave->yyss);
+     if (ysave->yyvs) Safefree(ysave->yyvs);
+     yydebug	= ysave->oldyydebug;
+     yynerrs	= ysave->oldyynerrs;
+     yyerrflag	= ysave->oldyyerrflag;
+     yychar	= ysave->oldyychar;
+     yyval	= ysave->oldyyval;
+     yylval	= ysave->oldyylval;
+     Safefree(ysave);
+ }
+ 
  int
  yyparse()
  {
      register int yym, yyn, yystate;
+     register short *yyssp;
+     register YYSTYPE *yyvsp;
+     short* yyss;
+     YYSTYPE* yyvs;
+     unsigned yystacksize = YYSTACKSIZE;
+     int retval = 0;
  #if YYDEBUG
      register char *yys;
      extern char *getenv();
+ #endif
+ 
+     struct ysv *ysave = (struct ysv*)safemalloc(sizeof(struct ysv));
+     SAVEDESTRUCTOR(yydestruct, ysave);
+     ysave->oldyydebug	= yydebug;
+     ysave->oldyynerrs	= yynerrs;
+     ysave->oldyyerrflag	= yyerrflag;
+     ysave->oldyychar	= yychar;
+     ysave->oldyyval	= yyval;
+     ysave->oldyylval	= yylval;
  
+ #if YYDEBUG
      if (yys = getenv("YYDEBUG"))
      {
          yyn = *yys;
***************
*** 1349,1354 ****
--- 1323,1336 ----
      yyerrflag = 0;
      yychar = (-1);
  
+     /*
+     ** Initialize private stacks (yyparse may be called from an action)
+     */
+     ysave->yyss = yyss = (short*)safemalloc(yystacksize*sizeof(short));
+     ysave->yyvs = yyvs = (YYSTYPE*)safemalloc(yystacksize*sizeof(YYSTYPE));
+     if (!yyvs || !yyss)
+ 	goto yyoverflow;
+ 
      yyssp = yyss;
      yyvsp = yyvs;
      *yyssp = yystate = 0;
***************
*** 1364,1370 ****
              yys = 0;
              if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
              if (!yys) yys = "illegal-symbol";
!             printf("yydebug: state %d, reading %d (%s)\n", yystate,
                      yychar, yys);
          }
  #endif
--- 1346,1352 ----
              yys = 0;
              if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
              if (!yys) yys = "illegal-symbol";
!             fprintf(stderr, "yydebug: state %d, reading %d (%s)\n", yystate,
                      yychar, yys);
          }
  #endif
***************
*** 1374,1385 ****
      {
  #if YYDEBUG
          if (yydebug)
!             printf("yydebug: state %d, shifting to state %d\n",
                      yystate, yytable[yyn]);
  #endif
          if (yyssp >= yyss + yystacksize - 1)
          {
!             goto yyoverflow;
          }
          *++yyssp = yystate = yytable[yyn];
          *++yyvsp = yylval;
--- 1356,1381 ----
      {
  #if YYDEBUG
          if (yydebug)
!             fprintf(stderr, "yydebug: state %d, shifting to state %d\n",
                      yystate, yytable[yyn]);
  #endif
          if (yyssp >= yyss + yystacksize - 1)
          {
! 	    /*
! 	    ** reallocate and recover.  Note that pointers
! 	    ** have to be reset, or bad things will happen
! 	    */
! 	    int yyps_index = (yyssp - yyss);
! 	    int yypv_index = (yyvsp - yyvs);
! 	    yystacksize += YYSTACKSIZE;
! 	    ysave->yyvs = yyvs =
! 		(YYSTYPE*)realloc((char*)yyvs,yystacksize * sizeof(YYSTYPE));
! 	    ysave->yyss = yyss =
! 		(short*)realloc((char*)yyss,yystacksize * sizeof(short));
! 	    if (!yyvs || !yyss)
! 		goto yyoverflow;
! 	    yyssp = yyss + yyps_index;
! 	    yyvsp = yyvs + yypv_index;
          }
          *++yyssp = yystate = yytable[yyn];
          *++yyvsp = yylval;
***************
*** 1415,1426 ****
              {
  #if YYDEBUG
                  if (yydebug)
!                     printf("yydebug: state %d, error recovery shifting\
!  to state %d\n", *yyssp, yytable[yyn]);
  #endif
                  if (yyssp >= yyss + yystacksize - 1)
                  {
!                     goto yyoverflow;
                  }
                  *++yyssp = yystate = yytable[yyn];
                  *++yyvsp = yylval;
--- 1411,1437 ----
              {
  #if YYDEBUG
                  if (yydebug)
!                     fprintf(stderr,
! 		     "yydebug: state %d, error recovery shifting to state %d\n",
! 		     *yyssp, yytable[yyn]);
  #endif
                  if (yyssp >= yyss + yystacksize - 1)
                  {
! 		    /*
! 		    ** reallocate and recover.  Note that pointers
! 		    ** have to be reset, or bad things will happen
! 		    */
! 		    int yyps_index = (yyssp - yyss);
! 		    int yypv_index = (yyvsp - yyvs);
! 		    yystacksize += YYSTACKSIZE;
! 		    ysave->yyvs = yyvs = (YYSTYPE*)realloc((char*)yyvs,
! 			yystacksize * sizeof(YYSTYPE));
! 		    ysave->yyss = yyss = (short*)realloc((char*)yyss,
! 			yystacksize * sizeof(short));
! 		    if (!yyvs || !yyss)
! 			goto yyoverflow;
! 		    yyssp = yyss + yyps_index;
! 		    yyvsp = yyvs + yypv_index;
                  }
                  *++yyssp = yystate = yytable[yyn];
                  *++yyvsp = yylval;
***************
*** 1430,1437 ****
              {
  #if YYDEBUG
                  if (yydebug)
!                     printf("yydebug: error recovery discarding state %d\n",
!                             *yyssp);
  #endif
                  if (yyssp <= yyss) goto yyabort;
                  --yyssp;
--- 1441,1449 ----
              {
  #if YYDEBUG
                  if (yydebug)
!                     fprintf(stderr,
! 			"yydebug: error recovery discarding state %d\n",
! 			*yyssp);
  #endif
                  if (yyssp <= yyss) goto yyabort;
                  --yyssp;
***************
*** 1448,1455 ****
              yys = 0;
              if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
              if (!yys) yys = "illegal-symbol";
!             printf("yydebug: state %d, error recovery discards token %d (%s)\n",
!                     yystate, yychar, yys);
          }
  #endif
          yychar = (-1);
--- 1460,1468 ----
              yys = 0;
              if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
              if (!yys) yys = "illegal-symbol";
!             fprintf(stderr,
! 		"yydebug: state %d, error recovery discards token %d (%s)\n",
! 		yystate, yychar, yys);
          }
  #endif
          yychar = (-1);
***************
*** 1458,1464 ****
  yyreduce:
  #if YYDEBUG
      if (yydebug)
!         printf("yydebug: state %d, reducing by rule %d (%s)\n",
                  yystate, yyn, yyrule[yyn]);
  #endif
      yym = yylen[yyn];
--- 1471,1477 ----
  yyreduce:
  #if YYDEBUG
      if (yydebug)
!         fprintf(stderr, "yydebug: state %d, reducing by rule %d (%s)\n",
                  yystate, yyn, yyrule[yyn]);
  #endif
      yym = yylen[yyn];
***************
*** 2246,2253 ****
      {
  #if YYDEBUG
          if (yydebug)
!             printf("yydebug: after reduction, shifting from state 0 to\
!  state %d\n", YYFINAL);
  #endif
          yystate = YYFINAL;
          *++yyssp = YYFINAL;
--- 2259,2267 ----
      {
  #if YYDEBUG
          if (yydebug)
!             fprintf(stderr,
! 		"yydebug: after reduction, shifting from state 0 to state %d\n",
! 		YYFINAL);
  #endif
          yystate = YYFINAL;
          *++yyssp = YYFINAL;
***************
*** 2261,2267 ****
                  yys = 0;
                  if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
                  if (!yys) yys = "illegal-symbol";
!                 printf("yydebug: state %d, reading %d (%s)\n",
                          YYFINAL, yychar, yys);
              }
  #endif
--- 2275,2281 ----
                  yys = 0;
                  if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
                  if (!yys) yys = "illegal-symbol";
!                 fprintf(stderr, "yydebug: state %d, reading %d (%s)\n",
                          YYFINAL, yychar, yys);
              }
  #endif
***************
*** 2276,2295 ****
          yystate = yydgoto[yym];
  #if YYDEBUG
      if (yydebug)
!         printf("yydebug: after reduction, shifting from state %d \
! to state %d\n", *yyssp, yystate);
  #endif
      if (yyssp >= yyss + yystacksize - 1)
      {
!         goto yyoverflow;
      }
      *++yyssp = yystate;
      *++yyvsp = yyval;
      goto yyloop;
  yyoverflow:
!     yyerror("yacc stack overflow");
  yyabort:
!     return (1);
  yyaccept:
!     return (0);
  }
--- 2290,2324 ----
          yystate = yydgoto[yym];
  #if YYDEBUG
      if (yydebug)
!         fprintf(stderr,
! 	    "yydebug: after reduction, shifting from state %d to state %d\n",
! 	    *yyssp, yystate);
  #endif
      if (yyssp >= yyss + yystacksize - 1)
      {
! 	/*
! 	** reallocate and recover.  Note that pointers
! 	** have to be reset, or bad things will happen
! 	*/
! 	int yyps_index = (yyssp - yyss);
! 	int yypv_index = (yyvsp - yyvs);
! 	yystacksize += YYSTACKSIZE;
! 	ysave->yyvs = yyvs =
! 	    (YYSTYPE*)realloc((char*)yyvs,yystacksize * sizeof(YYSTYPE));
! 	ysave->yyss = yyss =
! 	    (short*)realloc((char*)yyss,yystacksize * sizeof(short));
! 	if (!yyvs || !yyss)
! 	    goto yyoverflow;
! 	yyssp = yyss + yyps_index;
! 	yyvsp = yyvs + yypv_index;
      }
      *++yyssp = yystate;
      *++yyvsp = yyval;
      goto yyloop;
  yyoverflow:
!     yyerror("Out of memory for yacc stack");
  yyabort:
!     retval = 1;
  yyaccept:
!     return retval;
  }