diff --git a/test/salloc_align.c b/test/salloc_align.c
index 8fbf7e3..389d19a 100644
--- a/test/salloc_align.c
+++ b/test/salloc_align.c
@@ -7,10 +7,14 @@
 #include <assert.h>
 #include "ucore/ucore_utils.h"
 #include "../src/ucore_salloc.c"
-
-// Intended to be run under valgrind. Should show no errors
-
-
+struct Foo {
+    short s1;
+    char b;
+    short s2;
+    int foo;
+    char *data;
+    char c;
+};
 int main(int argc, char *argv[])
 {
     size_t i;
@@ -18,10 +22,13 @@ int main(int argc, char *argv[])
     SAlloc *s = uc_new_salloc(1023);
     printf("Alignof double %zu\n", __alignof__(double));
     printf("Alignof void* %zu\n", __alignof__(void*));
+    printf("Alignof struct Foo %zu\n", __alignof__(struct Foo));
     for (i = 0; i < 1013; i++) {
-        uc_s_alloc(s, sizeof(double)*41);
+        uintptr_t p = (uintptr_t)uc_s_alloc(s, sizeof(double)*41);
+        assert((p/__alignof__(double)) * __alignof__(double) == p);
     }
 
+
     c = s->first;
     while(c) {
         uintptr_t p = (uintptr_t)&c->data.data[0];
@@ -32,9 +39,19 @@ int main(int argc, char *argv[])
         assert((p/__alignof__(float)) * __alignof__(float) == p);
         assert((p/__alignof__(long long)) * __alignof__(long long) == p);
         assert((p/__alignof__(void*)) * __alignof__(void*) == p);
+        assert((p/__alignof__(double)) * __alignof__(double) == p);
     }
     
     uc_free_salloc(s);
 
+    s = uc_new_salloc(141);
+    for (i = 0; i < 1013; i++) {
+        uintptr_t p = (uintptr_t)uc_s_alloc(s, sizeof(struct Foo));
+        assert((p/__alignof__(struct Foo)) * __alignof__(struct Foo) == p);
+    }
+
+    uc_free_salloc(s);
+
+
     return 0;
 }