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diff --git a/tests/posix.l b/tests/posix.l
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+/*
+ * This file is part of flex.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE.
+ */
+
+%{
+/* The goal of this test is to verify that we are getting the counter-intuitive
+ * posix behavior of the repeat operator `{}'.
+ *
+ *  ab{3} -  In traditional flex, this matches "abbb".
+ *           In posix, this matches "ababab".
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include "config.h"
+
+#define NUM_TESTS 1
+char * tests[NUM_TESTS] =  { "ababab"};
+int main(void);
+
+int tests_ok[NUM_TESTS] =  { 0 };
+
+%}
+
+%option 8bit prefix="test"
+%option nounput nomain noyywrap noinput
+%option warn posix-compat
+
+
+%%
+
+ab{3}    tests_ok[0] = 1; return 0;
+.|\n     return 0;
+
+%%
+
+
+int main ()
+{
+    YY_BUFFER_STATE state;
+    int i;
+
+    yyin = stdin;
+    yyout = stdout;
+
+    /* Run the tests */
+    for (i=0; i < NUM_TESTS; i++){
+        printf("Testing: yy_scan_string(%s): ", tests[i]);
+        state = yy_scan_string(tests[i]);
+        yylex();
+        yy_delete_buffer(state);
+        printf("... %s\n", tests_ok[i] ? "OK" : "FAILED");
+    }
+
+    for (i=0; i < NUM_TESTS; i++)
+        if (!tests_ok[i])
+            exit(1);
+
+    printf("TEST RETURNING OK.\n");
+    return 0;
+}