diff -ru srtp.orig/test/srtp_driver.c srtp/test/srtp_driver.c
--- srtp.orig/test/srtp_driver.c	2012-08-05 14:26:28.703145796 +0200
+++ srtp/test/srtp_driver.c	2012-08-05 14:27:12.003981862 +0200
@@ -314,7 +314,7 @@
   if (do_codec_timing) {
     srtp_policy_t policy;
     int ignore;
-    double mips = mips_estimate(1000000000, &ignore);
+    double mips_ = mips_estimate(1000000000, &ignore);
 
     crypto_policy_set_rtp_default(&policy.rtp);
     crypto_policy_set_rtcp_default(&policy.rtcp);
@@ -323,33 +323,33 @@
     policy.key  = test_key;
     policy.next = NULL;
 
-    printf("mips estimate: %e\n", mips);
+    printf("mips estimate: %e\n", mips_);
 
     printf("testing srtp processing time for voice codecs:\n");
     printf("codec\t\tlength (octets)\t\tsrtp instructions/second\n");
     printf("G.711\t\t%d\t\t\t%e\n", 80, 
-           (double) mips * (80 * 8) / 
+           (double) mips_ * (80 * 8) / 
 	   srtp_bits_per_second(80, &policy) / .01 );
     printf("G.711\t\t%d\t\t\t%e\n", 160, 
-           (double) mips * (160 * 8) / 
+           (double) mips_ * (160 * 8) / 
 	   srtp_bits_per_second(160, &policy) / .02);
     printf("G.726-32\t%d\t\t\t%e\n", 40, 
-           (double) mips * (40 * 8) / 
+           (double) mips_ * (40 * 8) / 
 	   srtp_bits_per_second(40, &policy) / .01 );
     printf("G.726-32\t%d\t\t\t%e\n", 80, 
-           (double) mips * (80 * 8) / 
+           (double) mips_ * (80 * 8) / 
 	   srtp_bits_per_second(80, &policy) / .02);
     printf("G.729\t\t%d\t\t\t%e\n", 10, 
-           (double) mips * (10 * 8) / 
+           (double) mips_ * (10 * 8) / 
 	   srtp_bits_per_second(10, &policy) / .01 );
     printf("G.729\t\t%d\t\t\t%e\n", 20, 
-           (double) mips * (20 * 8) /
+           (double) mips_ * (20 * 8) /
 	   srtp_bits_per_second(20, &policy) / .02 );
     printf("Wideband\t%d\t\t\t%e\n", 320, 
-           (double) mips * (320 * 8) /
+           (double) mips_ * (320 * 8) /
 	   srtp_bits_per_second(320, &policy) / .01 );
     printf("Wideband\t%d\t\t\t%e\n", 640, 
-           (double) mips * (640 * 8) /
+           (double) mips_ * (640 * 8) /
 	   srtp_bits_per_second(640, &policy) / .02 );
   }