Changeset ec776c4

Timestamp:

Apr 24, 2018, 4:07:11 PM (7 years ago)

Author:

Rob Schluntz <rschlunt@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, with_gc

Children:

1da22500

Parents:

842c3d3

git-author:

Rob Schluntz <rschlunt@…> (04/24/18 16:07:04)

git-committer:

Rob Schluntz <rschlunt@…> (04/24/18 16:07:11)

Message:

Modify references test to include an implementation of subscript for arrays of references (single-level, temporary)

File:

• src/tests/references.c (modified) (2 diffs)

src/tests/references.c

@@ -45 +45 @@
 }
 
+// --- temporary code needed to make array of references subscript work.
+extern "C" {
+  void ** __index(__attribute__ ((unused)) size_t sizeof_T, __attribute__ ((unused)) size_t alignof_T, void **x, ptrdiff_t y) {
+    return (void **)((char *)x+y*sizeof(void *));
+  }
+  void __ctor(void ***dst, void **src) {
+    *dst = src;
+  }
+}
+__attribute__((alias("__index"))) forall( dtype T | sized(T) ) T && ?[?]( T & * x, ptrdiff_t y );
+__attribute__((alias("__ctor"))) forall( dtype DT ) void ?{}( DT & * & dst, DT & * src);
+forall( dtype DT ) void ^?{}( DT & * & ) {}
+// --- end of temporary code
+
 int main() {
         int x = 123456, x2 = 789, *p1 = &x, **p2 = &p1, ***p3 = &p2,
@@ -52 +66 @@
         *p3 = &p1;                          // change p2
         int y = 0, z = 11, & ar[3] = { x, y, z };    // initialize array of references
-        // &ar[1] = &z;                        // change reference array element
-        // typeof( ar[1] ) p;                  // is int, i.e., the type of referenced object
-        // typeof( &ar[1] ) q;                 // is int &, i.e., the type of reference
-        // sizeof( ar[1] ) == sizeof( int );   // is true, i.e., the size of referenced object
-        // sizeof( &ar[1] ) == sizeof( int *); // is true, i.e., the size of a reference
+        &ar[1] = &z;                        // change reference array element
+        typeof( ar[1] ) p = 3;              // is int, i.e., the type of referenced object
+        typeof( &ar[1] ) q = &x;            // is int *, i.e., the type of pointer
+        _Static_assert( sizeof( ar[1] ) == sizeof( int ), "Array type should be int." );   // is true, i.e., the size of referenced object
+        _Static_assert( sizeof( &ar[1] ) == sizeof( int *), "Address of array should be int *." ); // is true, i.e., the size of a reference
 
         ((int*&)&r3) = &x;                  // change r1, (&*)**r3