diff --git a/compiler/src/dmd/cparse.d b/compiler/src/dmd/cparse.d
index 4fd923438c..ba5bbf4400 100644
--- a/compiler/src/dmd/cparse.d
+++ b/compiler/src/dmd/cparse.d
@@ -508,6 +508,14 @@ final class CParser(AST) : Parser!AST
 
             nextToken();
             auto exp = cparseAssignExp();
+            AST.Expression expHigh;
+            if (token.value == TOK.dotDotDot)
+            {
+                /* Case Ranges https://gcc.gnu.org/onlinedocs/gcc/Case-Ranges.html
+                 */
+                nextToken();
+                expHigh = cparseAssignExp();
+            }
             check(TOK.colon);
 
             if (flags & ParseStatementFlags.curlyScope)
@@ -533,7 +541,10 @@ final class CParser(AST) : Parser!AST
                 s = cparseStatement(0);
             }
             s = new AST.ScopeStatement(loc, s, token.loc);
-            s = new AST.CaseStatement(loc, exp, s);
+            if (expHigh)
+                s = new AST.CaseRangeStatement(loc, exp, expHigh, s);
+            else
+                s = new AST.CaseStatement(loc, exp, s);
             break;
         }
 
diff --git a/compiler/test/compilable/test22559.i b/compiler/test/compilable/test22559.i
new file mode 100644
index 0000000000..d8e5cc8847
--- /dev/null
+++ b/compiler/test/compilable/test22559.i
@@ -0,0 +1,17 @@
+// https://gcc.gnu.org/onlinedocs/gcc/Case-Ranges.html
+
+int alpha(char c)
+{
+    switch (c)
+    {
+	case 'A' ... 'Z': return 1;
+	case 'a' ... 'z': return 1;
+	default:          return 0;
+    }
+}
+
+_Static_assert(alpha('A') == 1, "1");
+_Static_assert(alpha('B') == 1, "2");
+_Static_assert(alpha('z') == 1, "3");
+_Static_assert(alpha('z' + 1) == 0, "3");
+_Static_assert(alpha('0') == 0, "4");