+2005-01-15 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/19263
+ * typeck2.c (split_nonconstant_init_1) <case VECTOR_TYPE>: Put a copy
+ of CONSTRUCTOR's node into MODIFY_EXPR, as the original is modified.
+
2005-01-12 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* Make-lang.in (cp-warn): Don't append $(WERROR).
case VECTOR_TYPE:
if (!initializer_constant_valid_p (init, type))
{
+ tree cons = copy_node (init);
CONSTRUCTOR_ELTS (init) = NULL;
- code = build2 (MODIFY_EXPR, type, dest, init);
+ code = build2 (MODIFY_EXPR, type, dest, cons);
code = build_stmt (EXPR_STMT, code);
add_stmt (code);
}
--- /dev/null
+// PR c++/19263
+// { dg-do run }
+// { dg-options "-O2" }
+
+typedef signed char v8qi __attribute__ ((vector_size (8)));
+
+extern "C" void abort (void);
+
+static unsigned char S[16];
+
+struct A
+{
+ int i;
+ v8qi j, k;
+ int l;
+};
+
+void
+foo (unsigned char v)
+{
+ A a = { 1, { v, v, v, v, v, v, v, v },
+ { v + 1, v + 1, v + 1, v + 1, v + 1, v + 1, v + 1, v + 1 }, 3 };
+ v8qi *s = (v8qi *) &S[0];
+ *s = a.j;
+ s[1] = a.k;
+}
+
+void
+bar (unsigned char v)
+{
+ v8qi val8 = { v, v, v, v, v, v, v, v };
+ v8qi *s = (v8qi *) &S[0];
+ *s = val8;
+}
+
+int n = 5, cnt;
+
+int
+num (void)
+{
+ ++cnt;
+ return n;
+}
+
+void
+baz (void)
+{
+ static A a = { 0, { num (), num (), num (), num (), 6, 6, 6, 6 },
+ { 7, 7, 7, 7, 8, 8, 8, 8 }, 0 };
+ v8qi *s = (v8qi *) &S[0];
+ *s = a.j;
+ s[1] = a.k;
+}
+
+int
+main ()
+{
+ int i;
+ foo (1);
+ for (i = 0; i < 8; ++i)
+ if (S[i] != 1)
+ abort ();
+ for (; i < 16; ++i)
+ if (S[i] != 2)
+ abort ();
+ bar (3);
+ for (i = 0; i < 8; ++i)
+ if (S[i] != 3)
+ abort ();
+ return 0;
+ baz ();
+ if (cnt != 4)
+ abort ();
+ for (i = 0; i < 16; ++i)
+ if (S[i] != 5 + (i / 4))
+ abort ();
+ return 0;
+}