1 files changed, 47 insertions, 0 deletions
diff --git a/tests/runner.py b/tests/runner.py
index 9d7a53fa..f1f9b947 100644
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -618,6 +618,53 @@ if 'benchmark' not in sys.argv:
         '''
         self.do_test(src, '*1410,0*')
 
+    def test_sup(self):
+        src = '''
+          #include <stdio.h>
+
+          struct S4   { int x;          }; // size: 4
+          struct S4_2 { short x, y;     }; // size: 4, but for alignment purposes, 2
+          struct S6   { short x, y, z;  }; // size: 6
+          struct S6w  { char x[6];      }; // size: 6 also
+          struct S6z  { int x; short y; }; // size: 8, since we align to a multiple of the biggest - 4
+
+          struct C___  { S6 a, b, c; int later; };
+          struct Carr  { S6 a[3]; int later; }; // essentially the same, but differently defined
+          struct C__w  { S6 a; S6w b; S6 c; int later; }; // same size, different struct
+          struct Cp1_  { int pre; short a; S6 b, c; int later; }; // fillers for a
+          struct Cp2_  { int a; short pre; S6 b, c; int later; }; // fillers for a (get addr of the other filler)
+          struct Cint  { S6 a; int  b; S6 c; int later; }; // An int (different size) for b
+          struct C4__  { S6 a; S4   b; S6 c; int later; }; // Same size as int from before, but a struct
+          struct C4_2  { S6 a; S4_2 b; S6 c; int later; }; // Same size as int from before, but a struct with max element size 2
+          struct C__z  { S6 a; S6z  b; S6 c; int later; }; // different size, 8 instead of 6
+
+          int main()
+          {
+            #define TEST(struc) \\
+            { \\
+              struc *s = 0; \\
+              printf("*%s: %d,%d,%d,%d<%d*\\n", #struc, (int)&(s->a), (int)&(s->b), (int)&(s->c), (int)&(s->later), sizeof(struc)); \\
+            }
+            #define TEST_ARR(struc) \\
+            { \\
+              struc *s = 0; \\
+              printf("*%s: %d,%d,%d,%d<%d*\\n", #struc, (int)&(s->a[0]), (int)&(s->a[1]), (int)&(s->a[2]), (int)&(s->later), sizeof(struc)); \\
+            }
+            printf("sizeofs:%d,%d\\n", sizeof(S6), sizeof(S6z));
+            TEST(C___);
+            TEST_ARR(Carr);
+            TEST(C__w);
+            TEST(Cp1_);
+            TEST(Cp2_);
+            TEST(Cint);
+            TEST(C4__);
+            TEST(C4_2);
+            TEST(C__z);
+            return 1;
+          }
+        '''
+        self.do_test(src, 'sizeofs:6,8\n*C___: 0,6,12,20<24*\n*Carr: 0,6,12,20<24*\n*C__w: 0,6,12,20<24*\n*Cp1_: 4,6,12,20<24*\n*Cp2_: 0,6,12,20<24*\n*Cint: 0,8,12,20<24*\n*C4__: 0,8,12,20<24*\n*C4_2: 0,6,10,16<20*\n*C__z: 0,8,16,24<28*')
+
     def test_assert(self):
         src = '''
           #include <stdio.h>