Changeset ec776c4


Ignore:
Timestamp:
Apr 24, 2018, 4:07:11 PM (4 years ago)
Author:
Rob Schluntz <rschlunt@…>
Branches:
aaron-thesis, arm-eh, cleanup-dtors, deferred_resn, demangler, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, with_gc
Children:
1da2250
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:
1 edited

Legend:

Unmodified
Added
Removed
  • src/tests/references.c

    r842c3d3 rec776c4  
    4545}
    4646
     47// --- temporary code needed to make array of references subscript work.
     48extern "C" {
     49  void ** __index(__attribute__ ((unused)) size_t sizeof_T, __attribute__ ((unused)) size_t alignof_T, void **x, ptrdiff_t y) {
     50    return (void **)((char *)x+y*sizeof(void *));
     51  }
     52  void __ctor(void ***dst, void **src) {
     53    *dst = src;
     54  }
     55}
     56__attribute__((alias("__index"))) forall( dtype T | sized(T) ) T && ?[?]( T & * x, ptrdiff_t y );
     57__attribute__((alias("__ctor"))) forall( dtype DT ) void ?{}( DT & * & dst, DT & * src);
     58forall( dtype DT ) void ^?{}( DT & * & ) {}
     59// --- end of temporary code
     60
    4761int main() {
    4862        int x = 123456, x2 = 789, *p1 = &x, **p2 = &p1, ***p3 = &p2,
     
    5266        *p3 = &p1;                          // change p2
    5367        int y = 0, z = 11, & ar[3] = { x, y, z };    // initialize array of references
    54         // &ar[1] = &z;                        // change reference array element
    55         // typeof( ar[1] ) p;                  // is int, i.e., the type of referenced object
    56         // typeof( &ar[1] ) q;                 // is int &, i.e., the type of reference
    57         // sizeof( ar[1] ) == sizeof( int );   // is true, i.e., the size of referenced object
    58         // sizeof( &ar[1] ) == sizeof( int *); // is true, i.e., the size of a reference
     68        &ar[1] = &z;                        // change reference array element
     69        typeof( ar[1] ) p = 3;              // is int, i.e., the type of referenced object
     70        typeof( &ar[1] ) q = &x;            // is int *, i.e., the type of pointer
     71        _Static_assert( sizeof( ar[1] ) == sizeof( int ), "Array type should be int." );   // is true, i.e., the size of referenced object
     72        _Static_assert( sizeof( &ar[1] ) == sizeof( int *), "Address of array should be int *." ); // is true, i.e., the size of a reference
    5973
    6074        ((int*&)&r3) = &x;                  // change r1, (&*)**r3
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