obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 42 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/ext/va-arg-pack-len-2.C b/gcc/testsuite/g++.dg/ext/va-arg-pack-len-2.C
new file mode 100644
index 000000000..0d369bdc9
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/va-arg-pack-len-2.C
@@ -0,0 +1,42 @@
+// { dg-do compile }
+// { dg-options "-O2" }
+
+#include <stdarg.h>
+
+extern int error_open_missing_mode (void)
+  __attribute__((__error__ ("open with O_CREAT needs 3 arguments, only 2 were given")));
+extern int warn_open_too_many_arguments (void)
+  __attribute__((__warning__ ("open called with more than 3 arguments")));
+
+extern int myopen2 (const char *path, int oflag);
+extern int myopenva (const char *path, int oflag, ...);
+
+extern inline __attribute__((always_inline, gnu_inline)) int
+myopen (const char *path, int oflag, ...)
+{
+  if (__builtin_va_arg_pack_len () > 1)
+    warn_open_too_many_arguments ();	// { dg-warning "called with more than 3" }
+
+  if (__builtin_constant_p (oflag))
+    {
+      if ((oflag & 0x40) != 0 && __builtin_va_arg_pack_len () < 1)
+	{
+	  error_open_missing_mode ();	// { dg-error "needs 3 arguments, only 2 were given" }
+	  return myopen2 (path, oflag);
+	}
+      return myopenva (path, oflag, __builtin_va_arg_pack ());
+    }
+
+  if (__builtin_va_arg_pack_len () < 1)
+    return myopen2 (path, oflag);
+
+  return myopenva (path, oflag, __builtin_va_arg_pack ());
+}
+
+int
+main (void)
+{
+  myopen ("h", 0x43);
+  myopen ("i", 0x43, 0644, 0655);
+  return 0;
+}