Index: perly.c
***************
*** 13,82 ****
  }
  
! #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 UNIOP 285
! #define LSTOP 286
! #define RELOP 287
! #define EQOP 288
! #define MULOP 289
! #define ADDOP 290
! #define DOLSHARP 291
! #define DO 292
! #define HASHBRACK 293
! #define NOAMP 294
! #define LOCAL 295
! #define MY 296
! #define OROP 297
! #define ANDOP 298
! #define NOTOP 299
! #define ASSIGNOP 300
! #define OROR 301
! #define ANDAND 302
! #define BITOROP 303
! #define BITANDOP 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,
--- 13,17 ----
  }
  
! #line 16 "perly.c"
  #define YYERRCODE 256
  short yylhs[] = {                                        -1,
***************
*** 1296,1306 ****
  int yyerrflag;
  int yychar;
- short *yyssp;
- YYSTYPE *yyvsp;
  YYSTYPE yyval;
  YYSTYPE yylval;
- short yyss[YYSTACKSIZE];
- YYSTYPE yyvs[YYSTACKSIZE];
- #define yystacksize YYSTACKSIZE
  #line 602 "perly.y"
   /* PROGRAM */
--- 1231,1236 ----
***************
*** 1309,1320 ****
--- 1239,1295 ----
  #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"))
      {
***************
*** 1329,1332 ****
--- 1304,1315 ----
      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;
***************
*** 1344,1348 ****
              if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
              if (!yys) yys = "illegal-symbol";
!             printf("yydebug: state %d, reading %d (%s)\n", yystate,
                      yychar, yys);
          }
--- 1327,1331 ----
              if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
              if (!yys) yys = "illegal-symbol";
!             fprintf(stderr, "yydebug: state %d, reading %d (%s)\n", yystate,
                      yychar, yys);
          }
***************
*** 1354,1363 ****
  #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];
--- 1337,1360 ----
  #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];
***************
*** 1395,1404 ****
  #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];
--- 1392,1416 ----
  #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];
***************
*** 1410,1415 ****
  #if YYDEBUG
                  if (yydebug)
!                     printf("yydebug: error recovery discarding state %d\n",
!                             *yyssp);
  #endif
                  if (yyssp <= yyss) goto yyabort;
--- 1422,1428 ----
  #if YYDEBUG
                  if (yydebug)
!                     fprintf(stderr,
! 			"yydebug: error recovery discarding state %d\n",
! 			*yyssp);
  #endif
                  if (yyssp <= yyss) goto yyabort;
***************
*** 1428,1433 ****
              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
--- 1441,1447 ----
              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
***************
*** 1438,1442 ****
  #if YYDEBUG
      if (yydebug)
!         printf("yydebug: state %d, reducing by rule %d (%s)\n",
                  yystate, yyn, yyrule[yyn]);
  #endif
--- 1452,1456 ----
  #if YYDEBUG
      if (yydebug)
!         fprintf(stderr, "yydebug: state %d, reducing by rule %d (%s)\n",
                  yystate, yyn, yyrule[yyn]);
  #endif
***************
*** 2185,2190 ****
  #if YYDEBUG
          if (yydebug)
!             printf("yydebug: after reduction, shifting from state 0 to\
!  state %d\n", YYFINAL);
  #endif
          yystate = YYFINAL;
--- 2199,2205 ----
  #if YYDEBUG
          if (yydebug)
!             fprintf(stderr,
! 		"yydebug: after reduction, shifting from state 0 to state %d\n",
! 		YYFINAL);
  #endif
          yystate = YYFINAL;
***************
*** 2200,2204 ****
                  if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
                  if (!yys) yys = "illegal-symbol";
!                 printf("yydebug: state %d, reading %d (%s)\n",
                          YYFINAL, yychar, yys);
              }
--- 2215,2219 ----
                  if (yychar <= YYMAXTOKEN) yys = yyname[yychar];
                  if (!yys) yys = "illegal-symbol";
!                 fprintf(stderr, "yydebug: state %d, reading %d (%s)\n",
                          YYFINAL, yychar, yys);
              }
***************
*** 2215,2224 ****
  #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;
--- 2230,2254 ----
  #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;
***************
*** 2226,2233 ****
      goto yyloop;
  yyoverflow:
!     yyerror("yacc stack overflow");
  yyabort:
!     return (1);
  yyaccept:
!     return (0);
  }
--- 2256,2263 ----
      goto yyloop;
  yyoverflow:
!     yyerror("Out of memory for yacc stack");
  yyabort:
!     retval = 1;
  yyaccept:
!     return retval;
  }