add test cases for def_func

Author: uchiiii

9cc.c

@@ -18,9 +18,10 @@ int main(int argc, char **argv) {
   { // for the definition of global functions
     printf(".globl ");
     for (int i = 0; code[i]; i++) {
-      printf("%.*s ", code[i]->len, code[i]->name);
+      if (i > 0) printf(", ");
+      printf("%.*s", code[i]->len, code[i]->name);
     }
-    printf("\n");
+    printf("\n\n");
   } 
 
 
@@ -40,7 +41,7 @@ int main(int argc, char **argv) {
     // rax is still valid without dealing with it.
     printf("  mov rsp, rbp\n");
     printf("  pop rbp\n");
-    printf("  ret\n");
+    printf("  ret\n\n");
   }
 
   return 0;

test.sh

@@ -6,8 +6,7 @@ assert() {
   ./9cc "$input" > tmp.s
   cc -o tmp tmp.s
   ./tmp
-  actual="$?"
-
+  actual="$?" 
   if [ "$actual" = "$expected" ]; then
     echo "$input => $actual"
   else
@@ -93,4 +92,10 @@ assert 10 'main() { a = 0; for(i = 0; i < 10; i = i+1) { a = a + 1; } return a;}
 assert 10 'main() { a = 0; b = 0; for(i = 0; i < 10; i = i+1) { a = a + 1; b = b + 2;} return a;}'
 assert 20 'main() { a = 0; b = 0; for(i = 0; i < 10; i = i+1) { a = a + 1; b = b + 2;} return b;}'
 
+assert 2  'ident(a) { return a; }
+main() { return ident(2); }'
+assert 3  'add(a, b) { return a+b; } 
+main() { return add(1, 2); }'
+
+
 echo OK