case-range1.C, [...]: New tests.

       * g++.dg/ext/case-range1.C, g++.dg/ext/case-range2.C,
       g++.dg/ext/case-range3.C: New tests.

From-SVN: r76973

gcc/testsuite/ChangeLog

+2004-01-30  Michael Matz  <matz@suse.de>
+
+	* g++.dg/ext/case-range1.C, g++.dg/ext/case-range2.C,
+	g++.dg/ext/case-range3.C: New tests.
+
 2004-01-30  Giovanni Bajo  <giovannibajo@gcc.gnu.org>
 
 	DR206

gcc/testsuite/g++.dg/ext/case-range1.C

+// { dg-do compile }
+// Tests if case ranges (a GNU extension) are accepted
+// { dg-options "" }
+const int low = -2;
+const int high = 15;
+
+template <typename T>
+T f2 (T i)
+{
+  switch (i)
+  {
+    case low ... high : return i + 1;
+    default : return 0;
+  }
+}
+
+int f (int i)
+{
+  switch (i) {
+    case 1 ... 10: return i + 1;
+    default: return f2 (i);
+  }
+}

gcc/testsuite/g++.dg/ext/case-range2.C

+// { dg-do compile }
+// Tests if case ranges (a GNU extension) correctly emit messages
+// about overlapping ranges.
+// { dg-options "" }
+
+const int low = -2;
+const int high = 15;
+
+template <typename T>
+T f2 (T i)
+{
+  switch (i)
+  {
+    case low ... high : return i + 1;  // { dg-error "" }
+    case 5 : return i + 2;             // { dg-error "duplicate" }
+    default : return 0;
+  }
+}
+
+int f (int i)
+{
+  switch (i) {
+    case 1 ... 10: return i + 1;       // { dg-error "" }
+    case 3 ... 5 : return i + 3;       // { dg-error "duplicate" }
+    default: return f2 (i);            // { dg-error "" }
+  }
+}

gcc/testsuite/g++.dg/ext/case-range3.C

+// { dg-do compile }
+// Tests if case ranges (a GNU extension) emit errors in ISO mode
+// { dg-options "-pedantic" }
+const int low = -2;
+const int high = 15;
+
+template <typename T>
+T f2 (T i)
+{
+  switch (i)
+  {
+    case low ... high : return i + 1; // { dg-error "non-standard" }
+    default : return 0;
+  }
+}
+
+int f (int i)
+{
+  switch (i) {
+    case 1 ... 10: return i + 1;      // { dg-error "non-standard" }
+    default: return f2 (i);           // { dg-error "" }
+  }
+}