--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/conv.c	Mon Nov 24 20:15:14 2003 +0900
@@ -0,0 +1,86 @@
+#include "stdio.h"
+
+f0(int i) {
+    int k,j;
+    k = 3+i;
+    j = g0(i+3);
+    return k+4+j;
+}
+
+g0(int i) {
+    return i+4;
+}
+
+typedef char *stack;
+
+struct cont_interface { // General Return Continuation
+    code (*ret)();
+};
+
+code f(int i,stack sp) {
+    int k,j;
+    k = 3+i;
+    goto f_g0(i,k,sp);
+}
+
+struct f_g0_interface {  // Specialized Return Continuation
+    code (*ret)();
+    int i_,k_,j_;
+};
+
+code f_g1(int j,stack sp);
+
+code f_g0(int i,int k,stack sp) { // Caller
+    struct f_g0_interface *c = 
+	(struct f_g0_interface *)(sp -= sizeof(struct f_g0_interface));
+
+    c->ret = f_g1;
+    c->k_ = k;
+    c->i_ = i;
+
+    goto g(i+3,sp);
+}
+
+code f_g1(int j,stack sp) {  // Continuation 
+    struct f_g0_interface *c = sp;
+    int k = c->k_;
+    sp += sizeof(struct f_g0_interface);
+    goto (( (struct cont_interface *)sp)->ret)(k+4+j,sp);
+}
+
+code g(int i,stack sp) {
+    goto (( (struct cont_interface *)sp)->ret)(i+4,sp);
+}
+
+struct main_continuation { // General Return Continuation
+    code (*ret)();
+    code (*main_ret)();
+    void *env;
+};
+
+code main_return(int i,stack sp) {
+    printf("%d\n",i);
+    goto (( (struct main_continuation *)sp)->main_ret)(0),
+           ((struct main_continuation *)sp)->env;
+}
+
+#define STACK_SIZE 2048
+stack main_stack[STACK_SIZE];
+#define stack_last (&main_stack[STACK_SIZE])
+
+main()
+{
+    struct main_continuation *cont;
+    stack sp = stack_last;
+
+    printf("%d\n",f0(233));
+
+    sp -= sizeof(*cont);
+    cont = (struct main_continuation *)sp;
+    cont->ret = main_return;
+    cont->main_ret = return;
+    cont->env = environment;
+    goto f(233,sp);
+}
+
+/* end */