diff --git a/test/unwind_06.pass.cpp b/test/unwind_06.pass.cpp
index e4c04e8..7d67f52 100644
--- a/test/unwind_06.pass.cpp
+++ b/test/unwind_06.pass.cpp
@@ -24,7 +24,7 @@
 double try1(bool v) {
   double a = get(0);
   double b = get(1);
-  for (counter = 100; counter; --counter)
+  for (counter = 100; counter; counter = counter - 1)
     a += get(1) + b;
   if (v) throw 10;
   return get(0)+a+b;
@@ -34,7 +34,7 @@
   double a = get(0);
   double b = get(1);
   double c = get(2);
-  for (counter = 100; counter; --counter)
+  for (counter = 100; counter; counter = counter - 1)
     a += get(1) + b + c;
   if (v) throw 10;
   return get(0)+a+b+c;
@@ -45,7 +45,7 @@
   double b = get(1);
   double c = get(2);
   double d = get(3);
-  for (counter = 100; counter; --counter)
+  for (counter = 100; counter; counter = counter - 1)
     a += get(1) + b + c + d;
   if (v) throw 10;
   return get(0)+a+b+c+d;
@@ -57,7 +57,7 @@
   double c = get(0);
   double d = get(0);
   double e = get(0);
-  for (counter = 100; counter; --counter)
+  for (counter = 100; counter; counter = counter - 1)
     a += get(1) + b+c+d+e;
   if (v) throw 10;
   return get(0)+a+b+c+d+e;
@@ -70,7 +70,7 @@
   double d = get(0);
   double e = get(0);
   double f = get(0);
-  for (counter = 100; counter; --counter)
+  for (counter = 100; counter; counter = counter - 1)
     a += get(1) + b+c+d+e+f;
   if (v) throw 10;
   return get(0)+a+b+c+d+e+f;
@@ -84,7 +84,7 @@
   double e = get(0);
   double f = get(0);
   double g = get(0);
-  for (counter = 100; counter; --counter)
+  for (counter = 100; counter; counter = counter - 1)
     a += get(1) + b+c+d+e+f+g;
   if (v) throw 10;
   return get(0)+a+b+c+d+e+f+g;
@@ -99,7 +99,7 @@
   double f = get(0);
   double g = get(0);
   double h = get(0);
-  for (counter = 100; counter; --counter)
+  for (counter = 100; counter; counter = counter - 1)
     a += get(1) + b+c+d+e+f+g+h;
   if (v) throw 10;
   return get(0)+a+b+c+d+e+f+g+h;
@@ -115,7 +115,7 @@
   double g = get(0);
   double h = get(0);
   double i = get(0);
-  for (counter = 100; counter; --counter)
+  for (counter = 100; counter; counter = counter - 1)
     a += get(1) + b+c+d+e+f+g+h+i;
   if (v) throw 10;
   return get(0)+a+b+c+d+e+f+g+h+i;