1 files changed, 90 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/builtin-choose-expr.c b/gcc/testsuite/gcc.dg/builtin-choose-expr.c
new file mode 100644
index 000000000..ceac6051f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-choose-expr.c
@@ -0,0 +1,90 @@
+/* { dg-do run } */
+/* { dg-options "-O1 -Wall" } */
+
+#define choose __builtin_choose_expr
+
+/* Check the type of __builtin_choose_expr between E1 and E2, both
+   ways round and with both 0 and 1 as the condition.  */
+#define ASSERT_COND_TYPE(E1, E2)				\
+        do {							\
+          typedef __typeof(E1) T1;				\
+          typedef __typeof(E2) T2;				\
+          typedef T1 **T1pp;					\
+          typedef T2 **T2pp;					\
+          typedef __typeof(choose (1, (E1), (E2))) T1a;		\
+          typedef __typeof(choose (0, (E2), (E1))) T1b;		\
+          typedef __typeof(choose (1, (E2), (E1))) T2a;		\
+          typedef __typeof(choose (0, (E1), (E2))) T2b;		\
+          typedef T1a **T1app;					\
+          typedef T1b **T1bpp;					\
+          typedef T2a **T2app;					\
+          typedef T2b **T2bpp;					\
+          T1pp t1 = 0;						\
+          T2pp t2 = 0;						\
+          T1app t1a = 0;					\
+          T1bpp t1b = 0;					\
+          T2app t2a = 0;					\
+          T2bpp t2b = 0;					\
+          t1 = t1a;						\
+          t1 = t1b;						\
+          t2 = t2a;						\
+          t2 = t2b;						\
+          (void) t1;						\
+          (void) t2;						\
+        } while (0)
+
+
+extern void abort ();
+extern void exit ();
+
+void bad ()
+{
+  abort ();
+}
+
+void good ()
+{
+  exit (0);
+}
+
+int main (void)
+{
+  signed char sc1, sc2;
+  void *v1;
+  int i, j;
+  double dd;
+  float f;
+  typedef void (*fpt)(void);
+  fpt triple;
+  struct S { int x, y; } pour, some, sugar;
+  union u { int p; } united, nations;
+
+  if (__builtin_choose_expr (0, 12, 0)
+      || !__builtin_choose_expr (45, 5, 0)
+      || !__builtin_choose_expr (45, 3, 0))
+    abort ();
+
+  ASSERT_COND_TYPE (sc1, sc2);
+  ASSERT_COND_TYPE (v1, sc1);
+  ASSERT_COND_TYPE (i, j);
+  ASSERT_COND_TYPE (dd, main);
+  ASSERT_COND_TYPE ((float)dd, i);
+  ASSERT_COND_TYPE (4, f);
+  ASSERT_COND_TYPE (triple, some);
+  ASSERT_COND_TYPE (united, nations);
+  ASSERT_COND_TYPE (nations, main);
+
+  pour.y = 69;
+  __builtin_choose_expr (0, bad (), sugar) = pour;
+  if (sugar.y != 69)
+    abort ();
+
+  __builtin_choose_expr (sizeof (int), f, bad ()) = 3.5F;
+
+  if (f != 3.5F)
+    abort ();
+
+  __builtin_choose_expr (1, good, bad)();
+
+  exit (0);
+}