# [Issue 1899] AA of fixed-length arrays fails to initialize

`http://d.puremagic.com/issues/show_bug.cgi?id=1899`
```

Don <clugd...@yahoo.com.au> changed:

----------------------------------------------------------------------------
Keywords|                            |patch
CC|                            |clugd...@yahoo.com.au

--- Comment #2 from Don <clugd...@yahoo.com.au> 2011-01-19 13:12:10 PST ---
PATCH: AssignExp::semantic(). We mustn't convert it into a slice assignment,
because it may be a construction.
Also require an implicit conversion, so that we can allow assignment of array
literals. Quick test case:

void bug1899()
{
int[3][string] AA;
int[3] x = [5,4,3];
AA["abc"] = x;
assert(AA["abc"] == x);
AA["def"] = [1,2,3];
assert(AA["def"]==[1,2,3]);
}

---
Index: expression.c
===================================================================
--- expression.c    (revision 882)
+++ expression.c    (working copy)
@@ -9086,10 +9086,23 @@
}

if (t1->ty == Tsarray && !refinit)
-    {   // Convert e1 to e1[]
+    {
+        if (e1->op == TOKindex &&
+            ((IndexExp *)e1)->e1->type->toBasetype()->ty == Taarray)
+            {
+                // Assignment to an AA of fixed-length arrays.
+                // Convert T[n][U] = T[] into T[n][U] = T[n]
+                e2 = e2->implicitCastTo(sc, e1->type);
+                if (e2->type == Type::terror)
+                    return e2;
+            }
+        else
+        {
+        // Convert e1 to e1[]
Expression *e = new SliceExp(e1->loc, e1, NULL, NULL);
e1 = e->semantic(sc);
t1 = e1->type->toBasetype();
+        }
}

e2->rvalue();
@@ -9131,8 +9144,13 @@
else if (t1->ty == Tsarray)
{
/* Should have already converted e1 => e1[]
+         * unless it is an AA
*/
-        assert(op == TOKconstruct);
+        if (!(e1->op == TOKindex && t2->ty == Tsarray &&
+            ((IndexExp *)e1)->e1->type->toBasetype()->ty == Taarray))
+        {
+            assert(op == TOKconstruct);
+        }
//error("cannot assign to static array %s", e1->toChars());
}
else if (e1->op == TOKslice)

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• [Issue 1899] AA of fixed-length arrays fails to initialize d-bugmail