1 files changed, 58 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/dfp/union-init.c b/gcc/testsuite/gcc.dg/dfp/union-init.c
new file mode 100644
index 000000000..6896ece99
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/dfp/union-init.c
@@ -0,0 +1,58 @@
+/* Cast to union is a GNU C extension.  */
+
+#include "dfp-dbg.h"
+
+union u
+{
+  _Decimal128 d128;
+  double d;
+};
+
+union n
+{
+  double d;
+  _Decimal64 d64;
+};
+
+int main ()
+{
+  static union u u1 = { 0.0dl };
+  static union u u2 = { 4.2dl };
+  static union u u4 = { 0.0 };
+
+  static union n n1 = { 2.2dd };
+  static union n n2 = { 3.25 };
+
+  _Decimal128 d128;
+  _Decimal64 d64;
+  double d;
+  
+  if (u1.d128 != 0.0dl)
+    FAILURE
+
+  if (u2.d128 != 4.2dl)
+    FAILURE
+
+  /* cast decimal floating point to union type.  */
+  d128 = 1.23dl;
+  d64 = 4.56dd;
+  d = 3.25;
+
+  u4 = (union u) d128;
+  if (u4.d128 != 1.23dl)
+    FAILURE
+  
+  u4 = (union u) d;
+  if (u4.d != 3.25)
+    FAILURE
+
+  n1 = (union n) d64;
+  if (n1.d64 != 4.56dd)
+    FAILURE
+  
+  n1 = (union n)d;
+  if (n1.d != 3.25)
+    FAILURE
+
+  FINISH
+}