diff --git a/alliance/src/loon/src/lon_lax_param.c b/alliance/src/loon/src/lon_lax_param.c
index 37cf6c40..3c056a5c 100644
--- a/alliance/src/loon/src/lon_lax_param.c
+++ b/alliance/src/loon/src/lon_lax_param.c
@@ -908,7 +908,7 @@ parsefilelax(char *filename)
   strcpy( name + size, ".lax" );
   
   LAX = loadlax(name);
-  if (!LAX) exit(1);
+  if (!LAX) autexit(1);
 }
 
 
diff --git a/alliance/src/loon/src/lon_lib_matching.c b/alliance/src/loon/src/lon_lib_matching.c
index ce836a59..69665096 100644
--- a/alliance/src/loon/src/lon_lib_matching.c
+++ b/alliance/src/loon/src/lon_lib_matching.c
@@ -67,7 +67,7 @@ static int loc_pattern_matching(chain_list* expr, chain_list* pattern)
 {
    if (!expr || !pattern) {
       fprintf(stderr,"loc_pattern_matching: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
 
    /*pattern is an atom*/
@@ -122,7 +122,7 @@ extern int pattern_matching(chain_list* expr, chain_list* pattern)
    
    if (!expr || !pattern) {
       fprintf(stderr,"pattern_matching: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
 
    if ( HTABLE == (authtable *)0 )
diff --git a/alliance/src/loon/src/lon_lib_negativ.c b/alliance/src/loon/src/lon_lib_negativ.c
index da8494e0..1bbdaa66 100644
--- a/alliance/src/loon/src/lon_lib_negativ.c
+++ b/alliance/src/loon/src/lon_lib_negativ.c
@@ -95,7 +95,7 @@ extern chain_list* inv_oper(chain_list* abl, int negativ)
          return abl;
       default:
          fprintf(stderr,"inv_oper: unknown operator %ld\n",ABL_OPER(abl));
-         exit(1);
+         autexit(1);
    }
 
    for (chain=ABL_CDR(abl); chain; chain=ABL_CDR(chain)) {
@@ -148,7 +148,7 @@ extern chain_list* build_negativ(chain_list* abl)
          case ABL_XOR: case ABL_NXOR: /*undifferent*/ break;
          default:
             fprintf(stderr,"inv_oper: oper %ld unknown\n",ABL_OPER(leaf));
-            exit(1);
+            autexit(1);
       }
    }
    
@@ -187,7 +187,7 @@ extern chain_list* build_negativ(chain_list* abl)
             break;
          default:
             fprintf(stderr,"inv_oper: oper %ld unknown\n",ABL_OPER(leaf));
-            exit(1);
+            autexit(1);
       }
    }
    
@@ -205,7 +205,7 @@ extern chain_list* build_negativ(chain_list* abl)
          break;
       default:
          fprintf(stderr,"inv_oper: oper %ld unknown\n",ABL_OPER(leaf));
-         exit(1);
+         autexit(1);
    }
    
    return abl;
diff --git a/alliance/src/loon/src/lon_lib_reader.c b/alliance/src/loon/src/lon_lib_reader.c
index 3b56e539..09855386 100644
--- a/alliance/src/loon/src/lon_lib_reader.c
+++ b/alliance/src/loon/src/lon_lib_reader.c
@@ -105,7 +105,7 @@ extern void library_reader(char* cell_directory)
 
    if (!cell_directory) {
       fprintf(stderr,"library_reader: no Cell directory\n");
-      exit(1);
+      autexit(1);
    }
    
    /*seek vbe files which describe the lib*/
@@ -115,7 +115,7 @@ extern void library_reader(char* cell_directory)
       fprintf(stderr,
               "Library Error: no cell in directory '%s'\n", 
               cell_directory?cell_directory:".");
-      exit(1);
+      autexit(1);
    }
    
    /*search only in our library not to interfer with others*/
diff --git a/alliance/src/loon/src/lon_lib_specifications.c b/alliance/src/loon/src/lon_lib_specifications.c
index a9efec2e..2e910dba 100644
--- a/alliance/src/loon/src/lon_lib_specifications.c
+++ b/alliance/src/loon/src/lon_lib_specifications.c
@@ -213,7 +213,7 @@ extern double getgenericT(befig_list* befig, char* name)
    else if (befig->BEBUS) output=befig->BEBUS->NAME;
    else {
       fprintf(stderr,"BEH: output is missing in %s\n",befig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    memo=SEPAR;
@@ -261,7 +261,7 @@ extern double getgenericTh(befig_list* befig, char* name)
    else if (befig->BEBUS) output=befig->BEBUS->NAME;
    else {
       fprintf(stderr,"BEH: output is missing in %s\n",befig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    memo=SEPAR;
@@ -300,7 +300,7 @@ extern double getgenericTl(befig_list* befig, char* name)
    else if (befig->BEBUS) output=befig->BEBUS->NAME;
    else {
       fprintf(stderr,"BEH: output is missing in %s\n",befig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    memo=SEPAR;
@@ -336,7 +336,7 @@ extern void putgenericT(befig_list* befig, char* name, double Thl_value, double
    else if (befig->BEBUS) output=befig->BEBUS->NAME;
    else {
       fprintf(stderr,"BEH: output is missing in %s\n",befig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    memo=SEPAR;
@@ -420,7 +420,7 @@ extern int getgenericR(befig_list* befig, char* name)
    else if (befig->BEBUS) output=befig->BEBUS->NAME;
    else {
       fprintf(stderr,"BEH: output is missing in %s\n",befig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    memo=SEPAR;
@@ -456,7 +456,7 @@ extern void putgenericR(befig_list* befig, char* name, double Rup_value, double
    else if (befig->BEBUS) output=befig->BEBUS->NAME;
    else {
       fprintf(stderr,"BEH: output is missing in %s\n",befig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    memo=SEPAR;
@@ -490,7 +490,7 @@ extern int getgenericRup(befig_list* befig, char* name)
    else if (befig->BEBUS) output=befig->BEBUS->NAME;
    else {
       fprintf(stderr,"BEH: output is missing in %s\n",befig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    memo=SEPAR;
@@ -527,7 +527,7 @@ extern int getgenericRdown(befig_list* befig, char* name)
    else if (befig->BEBUS) output=befig->BEBUS->NAME;
    else {
       fprintf(stderr,"BEH: output is missing in %s\n",befig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    memo=SEPAR;
diff --git a/alliance/src/loon/src/lon_lib_utils.c b/alliance/src/loon/src/lon_lib_utils.c
index ae75dbf4..4dda61a6 100644
--- a/alliance/src/loon/src/lon_lib_utils.c
+++ b/alliance/src/loon/src/lon_lib_utils.c
@@ -121,7 +121,7 @@ extern void moveport(port_list* head, port_list* new)
    if (!head && !new) return;
    if (!head || !new) {
       fprintf(stderr,"moveport: discrepancy in length\n");
-      exit(1);
+      autexit(1);
    }
    
    moveport(head->NEXT,new->NEXT);
@@ -179,14 +179,14 @@ static lofig_list* build_lofig(lofig_list* lofig, chain_list* nameorder)
          if (locon->DIRECTION==UNKNOWN) {
             fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
             locon->NAME,lofig->NAME);
-            exit(1);
+            autexit(1);
          }
          if (locon->NAME==name) break;
       }
       if (!locon) {
          fprintf(stderr,"build_lofig: no locon '%s' found in '%s'\n",name,
          lofig->NAME);
-         exit(1);
+         autexit(1);
       }
       
       namechain=addchain(NULL,name);
@@ -242,7 +242,7 @@ static cell_list* properties_addCell(befig_list* befig, lofig_list *lofig)
       if (!locon) {
          fprintf(stderr,"properties_addCell: locon '%s' not found\n",
          locon->NAME);
-         exit(1);
+         autexit(1);
       }
       losig=locon->SIG;
       
@@ -253,7 +253,7 @@ static cell_list* properties_addCell(befig_list* befig, lofig_list *lofig)
       if (!locon) {
          fprintf(stderr,"properties_addCell: locon '%s' not found in cell\n",
          locon->NAME);
-         exit(1);
+         autexit(1);
       }
       
       /*apply properties*/
diff --git a/alliance/src/loon/src/lon_main.c b/alliance/src/loon/src/lon_main.c
index e65a3aee..329d543f 100644
--- a/alliance/src/loon/src/lon_main.c
+++ b/alliance/src/loon/src/lon_main.c
@@ -114,30 +114,30 @@ static void set_param(int argc, char* argv[])
             if (optim_mode<=OPTIM_DELAY4) break;
          }
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       case XSCH_MODE:
          if (strlen(optarg)==1 && isdigit((int) optarg[0])) {
             xsch_mode=optarg[0]-'0';
             if (xsch_mode<=XSCH_GRADIENT) break;
          }
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       case LAX_FILE: 
          if (!lax_file) {lax_file=optarg; break;}
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       case  1 : /*all the other parameters without options  (Linux only)*/
          if (!input_file || input_file==argv[i]) {input_file=optarg; break;}
          if (!output_file || output_file==argv[i]) {output_file=optarg; break;}
          if (!lax_file || lax_file==argv[i]) {lax_file=optarg; break;}
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       case HELP_MODE:
          fprintf(stdout,HELP_USAGE "\n");
-         exit(0);
+         autexit(0);
       case '?': default:  
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       }
    }
 #endif  
@@ -145,12 +145,12 @@ static void set_param(int argc, char* argv[])
    /*verify for Sun and Solaris.  getopt() isn't the same than Linux_elf  */
    for (i=1; i<argc; i++) {
       if (!strcmp(argv[i],"-o")) {overwrite_mode=1; continue;}
-      if (!strcmp(argv[i],"-h")) {fprintf(stdout,HELP_USAGE "\n"); exit(0);}
+      if (!strcmp(argv[i],"-h")) {fprintf(stdout,HELP_USAGE "\n"); autexit(0);}
       /*take option and argument*/
       if (!strcmp(argv[i],"-l")) {
          if (++i<argc) {lax_file=argv[i]; continue;}
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       }
       if (!strcmp(argv[i],"-x")) {
          if (++i<argc && strlen(argv[i])==1 && isdigit((int) argv[i][0])) {
@@ -158,7 +158,7 @@ static void set_param(int argc, char* argv[])
             if (xsch_mode<=XSCH_GRADIENT) continue;
          }
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       }
       if (!strcmp(argv[i],"-m")) {
          if (++i<argc && strlen(argv[i])==1 && isdigit((int) argv[i][0])) {
@@ -166,7 +166,7 @@ static void set_param(int argc, char* argv[])
             if (optim_mode<=OPTIM_DELAY4) continue;
          }
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       }
    }  
    
@@ -182,7 +182,7 @@ static void set_param(int argc, char* argv[])
       if (!output_file || output_file==argv[i]) {output_file=argv[i]; continue;}
       if (!lax_file || lax_file==argv[i]) {lax_file=argv[i]; continue;}
       fprintf(stderr,OPT_USAGE "\n");
-      exit(1);
+      autexit(1);
    }
 
 
@@ -192,14 +192,14 @@ static void set_param(int argc, char* argv[])
    else {
       fprintf(stderr,
      "Environment Error: no 'MBK_IN_LO' defined for <input_file> extension\n");
-      exit(1);
+      autexit(1);
    }
    mbk_out_lo=mbkgetenv ("MBK_OUT_LO");
    if (mbk_out_lo) fprintf(stdout,"\tMBK_OUT_LO\t: %s\n",mbk_out_lo);
    else {
       fprintf(stderr,
       "Environment Error: no 'MBK_OUT_LO' defined for <output_file> extension\n");
-      exit(1);
+      autexit(1);
    }
 
    /*if no library defined*/
@@ -208,27 +208,27 @@ static void set_param(int argc, char* argv[])
    else {
       fprintf(stderr,
       "Environment Error: no 'MBK_TARGET_LIB' defined for cells directory\n");
-      exit(1);
+      autexit(1);
    }
 
 
    /*coherence in options*/
    if (!input_file) {
       fprintf(stderr,OPT_USAGE "\n");
-      exit(1);
+      autexit(1);
    }
    if (!output_file) {
       if (overwrite_mode) output_file=input_file;
       else {
          fprintf(stderr,OPT_USAGE "\n");
-         exit(1);
+         autexit(1);
       }
    }
    
    if (!strcmp(output_file,input_file) && !strcmp(mbk_in_lo,mbk_out_lo) && !overwrite_mode) {
       fprintf(stderr,"<output_file> must be different from <input_file>\n");
       fprintf(stderr,OPT_USAGE "\n");
-      exit(1);
+      autexit(1);
    }
    
    /*take default values*/
@@ -248,8 +248,8 @@ extern int main (int argc, char* argv[])
   
    /*init*/
    mbkenv();   /*mbk*/
-   ablenv();   /*abl*/
    autenv();  /*hash table*/
+   ablenv();   /*abl*/
    bddenv();  /*for vhdlloadbefig() in library reader*/
    
 
@@ -280,7 +280,7 @@ extern int main (int argc, char* argv[])
    case OPTIM_DELAY3: 
       fprintf(stdout,"25%% area - 75%% delay optimization\n"); break;
    case OPTIM_DELAY4: fprintf(stdout,"100%% delay optimization\n"); break;
-   default: fprintf(stderr,"LAX: Optimization mode greater than 4\n"); exit(1);
+   default: fprintf(stderr,"LAX: Optimization mode greater than 4\n"); autexit(1);
    }
    
 
@@ -289,7 +289,7 @@ extern int main (int argc, char* argv[])
    lofig=getlofig(input_file, 'A'/*all the figure*/);
    if (!lofig) {
       fprintf(stderr,"Cannot find '%s.%s'\n",input_file,mbk_in_lo);
-      exit(1);
+      autexit(1);
    }
    /*flatten all instance at cells level*/
    rflattenlofig(lofig, YES, YES);
@@ -298,7 +298,7 @@ extern int main (int argc, char* argv[])
    /*check coherence between LAX and lofig*/
    if (lax_file) {
       fprintf(stdout,"Controlling file '%s.lax'...\n",lax_file);
-      if (!coherencelaxlofig(lofig)) exit(1);
+      if (!coherencelaxlofig(lofig)) autexit(1);
    }   
   
    /*read cell library*/
@@ -310,7 +310,7 @@ extern int main (int argc, char* argv[])
    fprintf(stdout,"Capacitances on file '%s.%s'...\n",input_file,mbk_in_lo);
    if (!lofig->LOINS || !lofig->LOSIG) {
       fprintf(stderr,"Figure '%s' is empty!\n",lofig->NAME);
-      exit(1);
+      autexit(1);
    }
 
    /*prepare source*/
@@ -418,7 +418,7 @@ extern int main (int argc, char* argv[])
          losig=long_path->DATA;
          if (!losig->NAMECHAIN) {
             fprintf(stderr,"main: no name on signal\n");
-            exit(1);
+            autexit(1);
          }
          fprintf(stdout,"Critical path (no warranty)...%ld ps from '%s' to ",
          (long) critical_delay(lofig),(char*) losig->NAMECHAIN->DATA);
@@ -428,7 +428,7 @@ extern int main (int argc, char* argv[])
          losig=(losig_list*) ptype->DATA;
          if (!losig->NAMECHAIN) {
             fprintf(stderr,"main: no name on signal\n");
-            exit(1);
+            autexit(1);
          }
          if (losig->TYPE==EXTERNAL) {
             fprintf(stdout,"'%s'\n",(char*) losig->NAMECHAIN->DATA);
@@ -477,7 +477,7 @@ extern int main (int argc, char* argv[])
       xsch_stream=mbkfopen(xsch_file,"xsc",WRITE_TEXT);
       if (!xsch_stream){
          fprintf(stderr,"Cannot save file %s.xsc\n",xsch_file);
-         exit(1);
+         autexit(1);
       }
       /*replace losig by names*/
       for (ptype=long_path; ptype; ptype=ptype->NEXT) {
@@ -492,6 +492,6 @@ extern int main (int argc, char* argv[])
    
    
    fprintf(stdout,"End of %s...\n\n",LOON);
-   exit(0);
+   return(0);
 }
 
diff --git a/alliance/src/loon/src/lon_normalize_DAG.c b/alliance/src/loon/src/lon_normalize_DAG.c
index caae1d5c..50975d3d 100644
--- a/alliance/src/loon/src/lon_normalize_DAG.c
+++ b/alliance/src/loon/src/lon_normalize_DAG.c
@@ -334,7 +334,7 @@ static int abl_dispatching(chain_list *abl, int mark)
 
    if (!abl) {
       fprintf(stderr,"abl_dispatching: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
    
    if (ABL_ATOM(abl)) { /*it is a leaf*/
@@ -473,7 +473,7 @@ static int abl_dispatching(chain_list *abl, int mark)
 
       /*error: leaf not found*/
       fprintf(stderr,"abl_dispatching: %s not found\n",ABL_ATOM_VALUE(abl));
-      exit(1);
+      autexit(1);
    }
    
    /*it is an operator*/
@@ -548,7 +548,7 @@ extern int DAG_control(befig_list *befig_param)
 
    if (!befig_param) {
       fprintf(stderr,"DAG_control: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }   
    
    befig=befig_param;
diff --git a/alliance/src/loon/src/lon_normalize_message.c b/alliance/src/loon/src/lon_normalize_message.c
index 6ed53aec..6cdab379 100644
--- a/alliance/src/loon/src/lon_normalize_message.c
+++ b/alliance/src/loon/src/lon_normalize_message.c
@@ -102,7 +102,7 @@ extern void display_error_in_abl(char* message, chain_list *abl)
 {
    if (!message || !abl) {
       fprintf(stderr,"display_error_in_abl: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
 
    fprintf(stderr,"BEH: ");
diff --git a/alliance/src/loon/src/lon_normalize_register.c b/alliance/src/loon/src/lon_normalize_register.c
index 24a46304..29056f39 100644
--- a/alliance/src/loon/src/lon_normalize_register.c
+++ b/alliance/src/loon/src/lon_normalize_register.c
@@ -108,7 +108,7 @@ static int loc_format_register(bereg_list* bereg)
 
    if (!bereg || !bereg->BIABL) {
       fprintf(stderr,"identify_register: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
 
 #if 0 /*to accept multiple condition block*/
@@ -212,7 +212,7 @@ extern int format_register(befig_list* befig)
 
    if (!befig) {
       fprintf(stderr,"format_register: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
 
    BEH_ERROR=0;
diff --git a/alliance/src/loon/src/lon_normalize_simplify.c b/alliance/src/loon/src/lon_normalize_simplify.c
index 51d75130..f901fafd 100644
--- a/alliance/src/loon/src/lon_normalize_simplify.c
+++ b/alliance/src/loon/src/lon_normalize_simplify.c
@@ -186,7 +186,7 @@ static void flattenablexpr(chain_list* abl)
          default:
             fprintf(stderr,"unflattenexprabl: operator %ld unknown\n",
             ABL_OPER(abl));
-            exit(1);
+            autexit(1);
       }
       pred=chain;
    }
diff --git a/alliance/src/loon/src/lon_optim_capa.c b/alliance/src/loon/src/lon_optim_capa.c
index 1858bcd3..81a746d3 100644
--- a/alliance/src/loon/src/lon_optim_capa.c
+++ b/alliance/src/loon/src/lon_optim_capa.c
@@ -59,7 +59,7 @@ static ptype_list* sort_capa(ptype_list* capa)
    losig=(losig_list*) capa->DATA;
    if (!losig->NAMECHAIN) {
      fprintf(stderr,"sort_capa: no name on signal\n");
-     exit(1);
+     autexit(1);
    }
    best_C=getcapacitance(losig->NAMECHAIN->DATA);
    pred=capa;
@@ -69,7 +69,7 @@ static ptype_list* sort_capa(ptype_list* capa)
       losig=(losig_list*) ptype->DATA;
       if (!losig->NAMECHAIN) {
         fprintf(stderr,"sort_capa: no name on signal\n");
-        exit(1);
+        autexit(1);
       }
       C=getcapacitance((char*) losig->NAMECHAIN->DATA);
       if (C>best_C) {
@@ -105,12 +105,12 @@ static int change_instance(loins_list* loins, losig_list* losig, lofig_list* lof
    best=getCell(loins->FIGNAME);
    if (!best || best->NAME!=loins->FIGNAME) {
       fprintf(stderr,"library error: no cell '%s.vbe' found\n",loins->FIGNAME);
-      exit(1);
+      autexit(1);
    }
   
    if (!losig->NAMECHAIN) {
       fprintf(stderr,"change_instance: no name on signal\n");
-      exit(1);
+      autexit(1);
    }
 
    best_critical=critical_delay(lofig);
@@ -157,7 +157,7 @@ static int change_instance(loins_list* loins, losig_list* losig, lofig_list* lof
       fprintf(stderr,
       "change_instance: compute error %f!=%f ps   %f!=%f ps    (%sdue to caller)\n",
       critical,best_critical,delay,best_delay,change?"not ":"");
-      exit(1);
+      autexit(1);
    }  
    
    
@@ -177,7 +177,7 @@ static int change_instance(loins_list* loins, losig_list* losig, lofig_list* lof
          if (!locon_aux) {
             fprintf(stderr,"change_instance: locon '%s' not found\n",
             locon->NAME);
-            exit(1);
+            autexit(1);
          }
          losig_aux=locon_aux->SIG;
          /*search real connection*/
@@ -188,7 +188,7 @@ static int change_instance(loins_list* loins, losig_list* losig, lofig_list* lof
          if (!locon_aux) {
             fprintf(stderr,"change_instance: locon '%s' not found in cell\n",
             locon->NAME);
-            exit(1);
+            autexit(1);
          }
          locon->NAME=locon_aux->NAME;
       }
@@ -204,7 +204,7 @@ static int change_instance(loins_list* loins, losig_list* losig, lofig_list* lof
          fprintf(stderr,
          "change_instance: flatten error %f!=%f ps   %f!=%f ps\n",
          critical,best_critical,delay,best_delay);
-         exit(1);
+         autexit(1);
       }   
    
    }  /*end of change loins*/
@@ -240,7 +240,7 @@ extern void improve_capa_critical_path(lofig_list* lofig, int optim_level)
          losig=(losig_list*) ptype->DATA;
          if (!losig->NAMECHAIN) {
             fprintf(stderr,"improve_capa_critical_path: no name on signal\n");
-            exit(1);
+            autexit(1);
          }
          /*seek latest driver*/
          ptype2=getptype(losig->USER,LOFIGCHAIN);
@@ -248,7 +248,7 @@ extern void improve_capa_critical_path(lofig_list* lofig, int optim_level)
             fprintf(stderr,
             "improve_capa_critical_path: no lofigchain on losig '%s'\n",
             (char*) losig->NAMECHAIN->DATA);
-            exit(1);
+            autexit(1);
          }
          loins=NULL;
          for (lofigchain=ptype2->DATA; lofigchain; lofigchain=lofigchain->NEXT){
@@ -256,7 +256,7 @@ extern void improve_capa_critical_path(lofig_list* lofig, int optim_level)
             if (locon->DIRECTION==UNKNOWN) {
                fprintf(stderr,"BEH: 'linkage %s' isn't accepted\n",
                locon->NAME);
-               exit(1);
+               autexit(1);
             }
             if (locon->TYPE==EXTERNAL || locon->DIRECTION==IN) continue;
             loins=locon->ROOT;
@@ -290,7 +290,7 @@ extern void improve_RC_circuit(lofig_list* lofig, int optim_level)
          if (locon->DIRECTION==UNKNOWN) {
             fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
             locon->NAME,loins->INSNAME);
-            exit(1);
+            autexit(1);
          }
          if (isvdd(locon->NAME) || isvss(locon->NAME)) continue;
          if (locon->DIRECTION!=IN) break;
@@ -298,7 +298,7 @@ extern void improve_RC_circuit(lofig_list* lofig, int optim_level)
       if (!locon) {
          fprintf(stderr,"improve_RC_circuit: no output found for '%s'\n",
          loins->FIGNAME);
-         exit(1);
+         autexit(1);
       }
       losig=locon->SIG;
       change_instance(loins, losig, lofig, optim_level);
@@ -336,7 +336,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
    
    if (!losig->NAMECHAIN) {
       fprintf(stderr,"insert_buffer: no name on signal\n");
-      exit(1);
+      autexit(1);
    }
 
    best_delay=critical_delay(lofig);
@@ -361,7 +361,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,model->NAME);
-         exit(1);
+         autexit(1);
       }
       if (isvdd(locon->NAME)) losig_aux=losig_vdd;
       else if (isvss(locon->NAME)) losig_aux=losig_vss;
@@ -369,7 +369,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
       else if (locon->DIRECTION==IN) losig_aux=losig;
       else {
          fprintf(stderr,"insert_buffer: buffer port '%s' unknown\n",locon->NAME);
-         exit(1);
+         autexit(1);
       }
       sigchain=addchain(sigchain,losig_aux);
    }
@@ -388,7 +388,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,loins_buf->INSNAME);
-         exit(1);
+         autexit(1);
       }
       if (isvdd(locon->NAME)) losig_aux=losig_vdd;
       else if (isvss(locon->NAME)) losig_aux=losig_vss;
@@ -396,7 +396,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
       else if (locon->DIRECTION==IN) losig_aux=losig;
       else {
          fprintf(stderr,"insert_buffer: buffer port '%s' unknown\n",locon->NAME);
-         exit(1);
+         autexit(1);
       }
       ptype=getptype(losig_aux->USER,LOFIGCHAIN);
       if (!ptype) losig_aux->USER=addptype(losig_aux->USER,LOFIGCHAIN,addchain(NULL,locon));
@@ -408,7 +408,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
    buffer_ptype=getptype(losig_buf->USER,LOFIGCHAIN);
    if (!ptype || !buffer_ptype) {
       fprintf(stderr,"insert_buffer: LOFIGCHAIN not found\n");
-      exit(1);
+      autexit(1);
    }
    
    for (lofigchain=((chain_list*)ptype->DATA)->NEXT/*first is entry of buffer*/;
@@ -417,7 +417,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' isn't accepted\n",
          locon->NAME);
-         exit(1);
+         autexit(1);
       }
       /*do not move drivers and port of circuit*/
       if (locon->TYPE==EXTERNAL || locon->DIRECTION!=IN) {
@@ -449,7 +449,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
       ptype=getptype(losig->USER,LOFIGCHAIN);
       if (!buffer_ptype || !buffer_ptype->DATA) {
          fprintf(stderr,"insert_buffer: LOFIGCHAIN is empty\n");
-         exit(1);
+         autexit(1);
       }
       
       /*put critical path before buffer*/
@@ -564,7 +564,7 @@ static int insert_buffer(losig_list* losig, lofig_list* lofig, int optim_level,
          fprintf(stderr,
          "insert_buffer: compute error %e!=%e fF   %f!=%f ps    %f!=%f ps\n",
          capa,init_capa,delay,best_delay, init_delay, getdelay(losig->NAMECHAIN->DATA));
-         exit(1);
+         autexit(1);
       }   
    
    }
diff --git a/alliance/src/loon/src/lon_optim_stats.c b/alliance/src/loon/src/lon_optim_stats.c
index 56967e6f..22815c77 100644
--- a/alliance/src/loon/src/lon_optim_stats.c
+++ b/alliance/src/loon/src/lon_optim_stats.c
@@ -74,7 +74,7 @@ extern ptype_list* count_instance(lofig_list* lofig)
 
    if (!lofig) {
       fprintf(stderr,"count_instance: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
    
    NUM_INS=0;
@@ -133,7 +133,7 @@ extern ptype_list* percent_instance(ptype_list* model_list)
       cell=getCell((char*)ptype->DATA);
       if (!cell) {
          fprintf(stderr,"Library Error: cell '%s' not found\n",cell->NAME);
-         exit(1);
+         autexit(1);
       }
       inst=addptype(inst,cell->AREA*ptype->TYPE,ptype->DATA);
       AREA+=cell->AREA*ptype->TYPE;
@@ -166,7 +166,7 @@ extern double getmaxRC(lofig_list* lofig)
          losig=locon->SIG;
          if (!losig->NAMECHAIN) {
             fprintf(stderr,"getmaxRC: no name on signal\n");
-            exit(1);
+            autexit(1);
          }
          t=loins_max_RC(loins,losig->NAMECHAIN->DATA);
          if (t>RC) RC=t;
diff --git a/alliance/src/loon/src/lon_signal_critical.c b/alliance/src/loon/src/lon_signal_critical.c
index b0a77a85..30169775 100644
--- a/alliance/src/loon/src/lon_signal_critical.c
+++ b/alliance/src/loon/src/lon_signal_critical.c
@@ -62,7 +62,7 @@ extern losig_list* critical_output(lofig_list* lofig)
    for (losig=lofig->LOSIG; losig; losig=losig->NEXT) {
       if (!losig->NAMECHAIN) {
          fprintf(stderr,"critical_output: no losig name\n");
-         exit(1);
+         autexit(1);
       }
       signame=losig->NAMECHAIN->DATA;
       if (losig->TYPE==EXTERNAL) delay=getdelay(output_name(signame));
@@ -89,7 +89,7 @@ extern double critical_delay(lofig_list* lofig)
    
    if (!losig->NAMECHAIN) {
       fprintf(stderr,"critical_delay: no losig name\n");
-      exit(1);
+      autexit(1);
    }
    signame=losig->NAMECHAIN->DATA;
 
@@ -119,12 +119,12 @@ static ptype_list* search_long_path(losig_list* losig, int ck_include)
 
    if (!losig) {
       fprintf(stderr,"search_long_path: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
    
    if (!losig->NAMECHAIN) {
       fprintf(stderr,"search_long_path: no losig name\n");
-      exit(1);
+      autexit(1);
    }
 
    signame=(char*) losig->NAMECHAIN->DATA;
@@ -144,7 +144,7 @@ static ptype_list* search_long_path(losig_list* losig, int ck_include)
    ptype=getptype(losig->USER,LOFIGCHAIN);
    if (!ptype || !ptype->DATA) {
       fprintf(stderr,"search_long_path: no lofigchain found\n");
-      exit(1);
+      autexit(1);
    }
    
    for (lofigchain=(chain_list*) ptype->DATA; lofigchain; lofigchain=lofigchain->NEXT) {
@@ -152,7 +152,7 @@ static ptype_list* search_long_path(losig_list* losig, int ck_include)
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' isn't accepted\n",
          locon->NAME);
-         exit(1);
+         autexit(1);
       }
       /*only outputs*/
       if (isvss(locon->NAME) || isvdd(locon->NAME) 
@@ -175,7 +175,7 @@ static ptype_list* search_long_path(losig_list* losig, int ck_include)
    if (!cell) {
       fprintf(stderr,"library error: no cell '%s.vbe' found\n",
       loins->FIGNAME);
-      exit(1);
+      autexit(1);
    }
    befig=cell->BEFIG;
    if (befig->BEREG) {
@@ -198,7 +198,7 @@ static ptype_list* search_long_path(losig_list* losig, int ck_include)
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,loins->FIGNAME);
-         exit(1);
+         autexit(1);
       }
       /*only inputs*/
       if (locon->DIRECTION==OUT || locon->DIRECTION==TRISTATE
@@ -208,7 +208,7 @@ static ptype_list* search_long_path(losig_list* losig, int ck_include)
       losig=locon->SIG;
       if (!losig->NAMECHAIN) {
          fprintf(stderr,"search_long_path: no name on signal\n");
-         exit(1);
+         autexit(1);
       }
       signame=(char*) losig->NAMECHAIN->DATA;
       delay=getdelay(signame);
diff --git a/alliance/src/loon/src/lon_signal_netlist.c b/alliance/src/loon/src/lon_signal_netlist.c
index c2ac6323..c7b47161 100644
--- a/alliance/src/loon/src/lon_signal_netlist.c
+++ b/alliance/src/loon/src/lon_signal_netlist.c
@@ -57,14 +57,14 @@ extern void loins_capacitance(loins_list* loins, int increment)
    if (!cell) {
       fprintf(stderr,"library error: no model '%s.vbe' found\n",
       loins->FIGNAME);
-      exit(1);
+      autexit(1);
    }
    
    for (locon=loins->LOCON; locon; locon=locon->NEXT) {
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,loins->INSNAME);
-         exit(1);
+         autexit(1);
       }
       /*seek port which match with netlist*/
       for (port=cell->PORT; port; port=port->NEXT) {
@@ -74,13 +74,13 @@ extern void loins_capacitance(loins_list* loins, int increment)
          fprintf(stderr,
          "loins_capacitance: connector discrepancy between '%s' and '%s'\n",
          cell->NAME,loins->FIGNAME);
-         exit(1);
+         autexit(1);
       }
       
       losig=locon->SIG;
       if (!losig->NAMECHAIN) {
          fprintf(stderr,"loins_capacitance: no losig name\n");
-         exit(1);
+         autexit(1);
       }
       signame=losig->NAMECHAIN->DATA;
       if (!isvdd(locon->NAME) && !isvss(locon->NAME) 
@@ -108,7 +108,7 @@ extern double loins_max_T(loins_list* loins)
    
    if (!loins) {
       fprintf(stderr,"loins_max_T: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
    
    /*cell properties*/
@@ -116,7 +116,7 @@ extern double loins_max_T(loins_list* loins)
    if (!cell) {
       fprintf(stderr,"library error: no cell '%s.vbe' found\n",
       loins->FIGNAME);
-      exit(1);
+      autexit(1);
    }
    
    /*is-it a flip-flop?*/
@@ -138,7 +138,7 @@ extern double loins_max_T(loins_list* loins)
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,loins->INSNAME);
-         exit(1);
+         autexit(1);
       }
       /*eval delay on input dependancy*/
       if (isvdd(locon->NAME) || isvss(locon->NAME)) continue;
@@ -154,12 +154,12 @@ extern double loins_max_T(loins_list* loins)
          fprintf(stderr,
          "loins_max_T: connector discrepancy between '%s' and '%s'\n",
          cell->NAME,loins->FIGNAME);
-         exit(1);
+         autexit(1);
       }
       
       if (!locon->SIG->NAMECHAIN) {
          fprintf(stderr,"loins_max_T: no losig name\n");
-         exit(1);
+         autexit(1);
       }
       input=(char*) locon->SIG->NAMECHAIN->DATA;
       
@@ -189,7 +189,7 @@ extern double loins_max_RC(loins_list* loins, char* output)
    
    if (!loins || !output) {
       fprintf(stderr,"loins_max_RC: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
    
    /*cell properties*/
@@ -197,7 +197,7 @@ extern double loins_max_RC(loins_list* loins, char* output)
    if (!cell) {
       fprintf(stderr,"library error: no cell '%s.vbe' found\n",
       loins->FIGNAME);
-      exit(1);
+      autexit(1);
    }
    
    /*is-it a flip-flop?*/
@@ -219,7 +219,7 @@ extern double loins_max_RC(loins_list* loins, char* output)
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,loins->INSNAME);
-         exit(1);
+         autexit(1);
       }
       /*eval delay on input dependancy*/
       if (isvdd(locon->NAME) || isvss(locon->NAME)) continue;
@@ -235,12 +235,12 @@ extern double loins_max_RC(loins_list* loins, char* output)
          fprintf(stderr,
          "loins_max_RC: connector discrepancy between '%s' and '%s'\n",
          cell->NAME,loins->FIGNAME);
-         exit(1);
+         autexit(1);
       }
       
       if (!locon->SIG->NAMECHAIN) {
          fprintf(stderr,"loins_max_RC: no losig name\n");
-         exit(1);
+         autexit(1);
       }
       input=(char*) locon->SIG->NAMECHAIN->DATA;
       
@@ -270,7 +270,7 @@ extern double loins_delay(loins_list* loins, char* output)
    
    if (!loins || !output) {
       fprintf(stderr,"loins_delay: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
    
    /*cell properties*/
@@ -278,7 +278,7 @@ extern double loins_delay(loins_list* loins, char* output)
    if (!cell) {
       fprintf(stderr,"library error: no cell '%s.vbe' found\n",
       loins->FIGNAME);
-      exit(1);
+      autexit(1);
    }
    
    /*is-it a flip-flop?*/
@@ -300,7 +300,7 @@ extern double loins_delay(loins_list* loins, char* output)
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,loins->INSNAME);
-         exit(1);
+         autexit(1);
       }
       /*eval delay on input dependancy*/
       if (isvdd(locon->NAME) || isvss(locon->NAME)) continue;
@@ -316,16 +316,16 @@ extern double loins_delay(loins_list* loins, char* output)
          fprintf(stderr,
          "loins_delay: connector discrepancy between '%s' and '%s'\n",
          cell->NAME,loins->FIGNAME);
-         exit(1);
+         autexit(1);
       }
       
       if (!locon->SIG) {
          fprintf(stderr,"loins_delay: no losig\n");
-         exit(1);
+         autexit(1);
       }
       if (!locon->SIG->NAMECHAIN) {
          fprintf(stderr,"loins_delay: no losig name\n");
-         exit(1);
+         autexit(1);
       }
       input=(char*) locon->SIG->NAMECHAIN->DATA;
       
@@ -352,12 +352,12 @@ extern double losig_delay(losig_list* losig)
 
    if (!losig) {
       fprintf(stderr,"losig_delay: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
    
    if (!losig->NAMECHAIN) {
       fprintf(stderr,"losig_delay: no losig name\n");
-      exit(1);
+      autexit(1);
    }
    signame=losig->NAMECHAIN->DATA;
 
@@ -365,7 +365,7 @@ extern double losig_delay(losig_list* losig)
    if (!ptype) {
       fprintf(stderr,"losig_delay: no lofigchain on signal '%s'\n",
       signame);
-      exit(1);
+      autexit(1);
    }
    
    /*search drivers*/
@@ -377,7 +377,7 @@ extern double losig_delay(losig_list* losig)
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' isn't accepted\n",
          locon->NAME);
-         exit(1);
+         autexit(1);
       }
       /*real inputs*/
       if (isvdd(locon->NAME) || isvss(locon->NAME)) continue;
@@ -405,7 +405,7 @@ extern void propagate_loins_delay(loins_list *loins)
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,loins->INSNAME);
-         exit(1);
+         autexit(1);
       }
       if (locon->DIRECTION==IN || locon->DIRECTION==INOUT || locon->DIRECTION==TRANSCV)
          propagate_losig_delay(locon->SIG);
@@ -428,14 +428,14 @@ static void loc_propagate_losig_delay(loins_list *loins)
 
    if (!loins) {
       fprintf(stderr,"propagate_loins_delay: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
    
    for (locon=loins->LOCON; locon; locon=locon->NEXT) {
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
          locon->NAME,loins->INSNAME);
-         exit(1);
+         autexit(1);
       }
       if (isvdd(locon->NAME) || isvss(locon->NAME)) continue;
       if (locon->DIRECTION==IN) continue;
@@ -460,13 +460,13 @@ extern void propagate_losig_delay(losig_list *losig)
 
    if (!losig) {
       fprintf(stderr,"propagate_losig_delay: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
   
    
    if (!losig->NAMECHAIN) {
       fprintf(stderr,"propagate_losig_delay: no losig name\n");
-      exit(1);
+      autexit(1);
    }
    signame=losig->NAMECHAIN->DATA;
    delay=losig_delay(losig);
@@ -489,14 +489,14 @@ extern void propagate_losig_delay(losig_list *losig)
    if (!ptype) {
       fprintf(stderr,"propagate_losig_delay: no lofigchain on signal '%s'\n",
       signame);
-      exit(1);
+      autexit(1);
    }
    for (lofigchain=ptype->DATA; lofigchain; lofigchain=lofigchain->NEXT) {
       locon= (locon_list*) lofigchain->DATA;
       if (locon->DIRECTION==UNKNOWN) {
          fprintf(stderr,"BEH: 'linkage %s' isn't accepted\n",
          locon->NAME);
-         exit(1);
+         autexit(1);
       }
       if (isvdd(locon->NAME) || isvss(locon->NAME)) continue; 
       if (locon->DIRECTION==OUT || locon->DIRECTION==TRISTATE) continue;
@@ -520,9 +520,13 @@ extern void set_circuit_capacitance(lofig_list *lofig)
    for (losig=lofig->LOSIG; losig; losig=losig->NEXT) {
       if (!losig->NAMECHAIN) {
          fprintf(stderr,"set_circuit_capacitance: no losig name\n");
-         exit(1);
+         autexit(1);
       }
-      signame=losig->NAMECHAIN->DATA;
+      /*
+      ** LUDO: to ensure name unicity !
+      */
+      signame=getnameindex(losig->NAMECHAIN->DATA);
+      losig->NAMECHAIN->DATA = signame;
       /*for circuit output take user propertie if defined else return 0*/
       putcapacitance(signame,getcapacitancelax(signame));
       putdelay(signame,0);
diff --git a/alliance/src/loon/src/lon_signal_utils.c b/alliance/src/loon/src/lon_signal_utils.c
index b23a3e59..9c7a08ec 100644
--- a/alliance/src/loon/src/lon_signal_utils.c
+++ b/alliance/src/loon/src/lon_signal_utils.c
@@ -123,7 +123,7 @@ static void putsignal(signal_list* signal, char* name)
 {
    if (!name || !signal) {
       fprintf(stderr,"putsignal: NULL pointer\n");
-      exit(1);
+      autexit(1);
    }
 
    /*if doesn't exist hash table, init*/
@@ -144,7 +144,7 @@ static signal_list* getsignal(char *name, int create)
    
    if (!name) {
       fprintf(stderr,"getsignal: no name\n");
-      exit(1);
+      autexit(1);
    }
 
    /*if doesn't exist hash table, init*/
@@ -155,7 +155,7 @@ static signal_list* getsignal(char *name, int create)
 
    if (create==0) {
       fprintf(stderr,"getsignal: '%s' not found in hash table\n",name);
-      exit(1);
+      autexit(1);
    }
    
    /*create new signal*/
@@ -174,7 +174,7 @@ extern void putdelay(char* name, double delay)
 
    if (!name) {
       fprintf(stderr,"putdelay: no name\n");
-      exit(1);
+      autexit(1);
    }
 
    signal=getsignal(name,1/*if doesn't exist create it*/);
@@ -192,7 +192,7 @@ extern double getdelay(char* name)
    
    if (!name) {
       fprintf(stderr,"getdelay: no name\n");
-      exit(1);
+      autexit(1);
    }
 
    signal=getsignal(name,0/*if doesn't exist then error*/);
@@ -209,7 +209,7 @@ extern void incdelay(char* name, double delay)
 
    if (!name) {
       fprintf(stderr,"incdelay: no name\n");
-      exit(1);
+      autexit(1);
    }
 
    signal=getsignal(name,0);
@@ -227,7 +227,7 @@ extern double getcapacitance(char* name)
    
    if (!name) {
       fprintf(stderr,"getcapacitance: no name\n");
-      exit(1);
+      autexit(1);
    }
 
    signal=getsignal(name,0/*if doesn't exist then error*/);
@@ -244,7 +244,7 @@ extern void inccapacitance(char* name, double capacitance)
 
    if (!name) {
       fprintf(stderr,"inccapacitance: no name\n");
-      exit(1);
+      autexit(1);
    }
 
    signal=getsignal(name,0/*if doesn't exist then error*/);
@@ -262,7 +262,7 @@ extern void putcapacitance(char* name, double capacitance)
 
    if (!name) {
       fprintf(stderr,"putcapacitance: no name\n");
-      exit(1);
+      autexit(1);
    }
 
    signal=getsignal(name,1/*if doesn't exist create it*/);
diff --git a/alliance/src/loon/src/lon_xsch_driver.c b/alliance/src/loon/src/lon_xsch_driver.c
index 2ea81823..a6ff3e5f 100644
--- a/alliance/src/loon/src/lon_xsch_driver.c
+++ b/alliance/src/loon/src/lon_xsch_driver.c
@@ -150,7 +150,7 @@ extern void save_xsch(FILE* xsch_stream, lofig_list* lofig, ptype_list* long_pat
       
       if (!ptype->DATA) {
          fprintf(stderr,"save_xsch: compute error\n");
-         exit(1);
+         autexit(1);
       }
       delay=ptype->TYPE;
       gradient=delay/((double)XSCH_COLOR_MAX);
@@ -161,7 +161,7 @@ extern void save_xsch(FILE* xsch_stream, lofig_list* lofig, ptype_list* long_pat
 
       if (!losig->NAMECHAIN || !losig->NAMECHAIN->DATA) {
          fprintf(stderr,"save_xsch: no name for signal\n");
-         exit(1);
+         autexit(1);
       }
       signame=losig->NAMECHAIN->DATA;
       
@@ -195,19 +195,19 @@ extern void save_xsch(FILE* xsch_stream, lofig_list* lofig, ptype_list* long_pat
          if (locon->DIRECTION==UNKNOWN) {
             fprintf(stderr,"BEH: 'linkage %s' in figure '%s' isn't accepted\n",
             locon->NAME,loins->INSNAME);
-            exit(1);
+            autexit(1);
          }
          if (locon->DIRECTION==OUT || locon->DIRECTION==INOUT 
            || locon->DIRECTION==TRISTATE || locon->DIRECTION==TRANSCV) break;
       }
       if (!locon) {
          fprintf(stderr,"save_xsch: no output found for '%s'\n",loins->INSNAME);
-         exit(1);
+         autexit(1);
       }
       losig=locon->SIG;
       if (!losig->NAMECHAIN) {
         fprintf(stderr,"save_xsch: no name on signal\n");
-        exit(1);
+        autexit(1);
       }
       signame=losig->NAMECHAIN->DATA;
       
@@ -226,7 +226,7 @@ extern void save_xsch(FILE* xsch_stream, lofig_list* lofig, ptype_list* long_pat
                losig_aux=locon->SIG;
                if (!losig_aux->NAMECHAIN) {
                  fprintf(stderr,"save_xsch: no name on signal\n");
-                 exit(1);
+                 autexit(1);
                }
                /*is signal in critical path?*/
                for (ptype2=long_path; ptype2; ptype2=ptype2->NEXT) {
@@ -301,7 +301,7 @@ extern void save_xsch(FILE* xsch_stream, lofig_list* lofig, ptype_list* long_pat
                   losig=locon->SIG;
                   if (!losig->NAMECHAIN) {
                     fprintf(stderr,"save_xsch: no name on signal\n");
-                    exit(1);
+                    autexit(1);
                   }
                   if (losig->NAMECHAIN->DATA==signame) {
                      dest=loins->INSNAME;