apc_stack: use size_t instead of int where appropriate

Author: MaxKellermann

apc_stack.c

@@ -30,11 +30,11 @@
 
 struct apc_stack_t {
 	void** data;
-	int capacity;
-	int size;
+	size_t capacity;
+	size_t size;
 };
 
-apc_stack_t* apc_stack_create(int size_hint)
+apc_stack_t* apc_stack_create(size_t size_hint)
 {
 	apc_stack_t* stack = emalloc(sizeof(apc_stack_t));
 
@@ -81,7 +81,7 @@ void* apc_stack_top(apc_stack_t* stack)
 	return stack->data[stack->size-1];
 }
 
-void* apc_stack_get(apc_stack_t* stack, int n)
+void* apc_stack_get(apc_stack_t* stack, size_t n)
 {
 	assert(stack != NULL && stack->size > n);
 	return stack->data[n];

apc_stack.h

@@ -34,13 +34,13 @@
 #define T apc_stack_t*
 typedef struct apc_stack_t apc_stack_t; /* opaque stack type */
 
-extern T apc_stack_create(int size_hint);
+extern T apc_stack_create(size_t size_hint);
 extern void apc_stack_destroy(T stack);
 extern void apc_stack_clear(T stack);
 extern void apc_stack_push(T stack, void* item);
 extern void* apc_stack_pop(T stack);
 extern void* apc_stack_top(T stack);
-extern void* apc_stack_get(T stack, int n);
+extern void* apc_stack_get(T stack, size_t n);
 extern int apc_stack_size(T stack);
 
 #undef T