From ad737aa765269e7fa1a56d64e110f3cb7f24728b Mon Sep 17 00:00:00 2001
From: Murilo Soares Pereira <murilo.soares3@gmail.com>
Date: Sun, 4 Apr 2010 03:20:56 -0300
Subject: [PATCH] Fixed push().

---
 lib/stack.c | 12 ++++++------
 lib/stack.h |  2 +-
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/lib/stack.c b/lib/stack.c
index deba919..60a25ca 100644
--- a/lib/stack.c
+++ b/lib/stack.c
@@ -33,16 +33,16 @@ int length(struct stack *stack) {
   return(length);
 }
 
-void push(struct stack *stack, struct card *card) {
+void push(struct stack **stack, struct card *card) {
   struct stack *new_stack = NULL;
 
-  if (empty(stack)) {
-    stack->card = card;
+  if (empty(*stack)) {
+    (*stack)->card = card;
   } else {
-    new_stack = malloc(sizeof(new_stack));
+    new_stack = initialize_stack();
     new_stack->card = card;
-    new_stack->next = stack;
-    stack = new_stack;
+    new_stack->next = (*stack);
+    *stack = new_stack;
   }
 }
 
diff --git a/lib/stack.h b/lib/stack.h
index abb35b4..e1b8f21 100644
--- a/lib/stack.h
+++ b/lib/stack.h
@@ -9,7 +9,7 @@ struct stack {
 struct stack *initialize_stack();
 bool empty(struct stack *);
 int length(struct stack *);
-void push(struct stack *, struct card *);
+void push(struct stack **, struct card *);
 struct stack *pop(struct stack *);
 
 #endif