1 files changed, 164 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/c2x-stdarg-4.c b/gcc/testsuite/gcc.dg/c2x-stdarg-4.c
new file mode 100644
index 00000000000..1f8718dec68
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/c2x-stdarg-4.c
@@ -0,0 +1,164 @@
+/* Test C2x variadic functions with no named parameters, or last named
+   parameter with a declaration not allowed in C17.  Execution tests.  */
+/* { dg-do run } */
+/* { dg-options "-std=c2x -pedantic-errors" } */
+
+#include <stdarg.h>
+
+extern void abort (void);
+extern void exit (int);
+
+double
+f (...)
+{
+  va_list ap;
+  va_start (ap);
+  double ret = va_arg (ap, int);
+  ret += va_arg (ap, double);
+  ret += va_arg (ap, int);
+  ret += va_arg (ap, double);
+  va_end (ap);
+  return ret;
+}
+
+void
+g (...)
+{
+  va_list ap;
+  va_start (ap, random ! ignored, ignored ** text);
+  for (int i = 0; i < 10; i++)
+    if (va_arg (ap, double) != i)
+      abort ();
+  va_end (ap);
+}
+
+void
+h1 (register int x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h2 (int x(), ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h3 (int x[10], ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h4 (char x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h5 (float x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+void
+h6 (volatile long x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+struct s { char c[1000]; };
+
+void
+h7 (volatile struct s x, ...)
+{
+  va_list ap;
+  va_start (ap);
+  for (int i = 0; i < 10; i++)
+    {
+      if (va_arg (ap, double) != i)
+	abort ();
+      i++;
+      if (va_arg (ap, int) != i)
+	abort ();
+    }
+  va_end (ap);
+}
+
+int
+main ()
+{
+  if (f (1, 2.0, 3, 4.0) != 10.0)
+    abort ();
+  g (0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0);
+  g (0.0f, 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f);
+  h1 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h2 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h3 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h4 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h5 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h6 (0, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  h7 ((struct s) {}, 0.0, 1, 2.0, 3, 4.0, 5, 6.0, 7, 8.0, 9);
+  exit (0);
+}