Index: testsuite/20_util/hash/chi2_quality.cc
===================================================================
--- testsuite/20_util/hash/chi2_quality.cc	(revision 166105)
+++ testsuite/20_util/hash/chi2_quality.cc	(working copy)
@@ -91,10 +91,8 @@
   while (set.size() < N)
     {
       s.clear();
-      for (int i = 0; i < len; ++i)
-        {
-          s.push_back(rand() % 128);
-        }
+      for (unsigned int i = 0; i < len; ++i)
+	s.push_back(rand() % 128);
       set.insert(s);
     }
 
@@ -122,7 +120,7 @@
   while (set.size() < N)
     {
       std::string s(base, base+len);
-      for (int i = 0; i < bits_to_flip; ++i)
+      for (unsigned int i = 0; i < bits_to_flip; ++i)
         {
           int bit = rand() % bitlen;
           s[bit/8] ^= (1 << (bit%8));
@@ -168,7 +166,7 @@
   for (unsigned long i = 0; i < N; ++i)
     {
       s.clear();
-      for (int j = 0; j < sizeof(unsigned long) * 8; ++j)
+      for (unsigned int j = 0; j < sizeof(unsigned long) * 8; ++j)
         {
           const bool bit = (1UL << j) & i;
           s.push_back(bit ? '1' : '0');
Index: testsuite/20_util/hash/quality.cc
===================================================================
--- testsuite/20_util/hash/quality.cc	(revision 166105)
+++ testsuite/20_util/hash/quality.cc	(working copy)
@@ -37,12 +37,12 @@
 #define STRSIZE 42
 #endif
 
-const int num_quality_tests = NTESTS;
-const int num_strings_for_quality_tests = NSTRINGS;
-const int string_size = STRSIZE;
+const unsigned int num_quality_tests = NTESTS;
+const unsigned int num_strings_for_quality_tests = NSTRINGS;
+const unsigned int string_size = STRSIZE;
 
 vector<string>
-random_strings(int n, int len)
+random_strings(unsigned int n, unsigned int len)
 {
   string s(len, '\0');
   unordered_set<string> result_set;
@@ -57,10 +57,10 @@
 }
 
 double
-score_from_varying_position(string s, int index)
+score_from_varying_position(string s, unsigned int index)
 {
   bool test __attribute__((unused)) = true;
-  int bits_in_hash_code = sizeof(size_t) * 8;
+  unsigned int bits_in_hash_code = sizeof(size_t) * 8;
 
   // We'll iterate through all 256 vals for s[index], leaving the rest
   // of s fixed.  Then, for example, out of the 128 times that
@@ -71,9 +71,9 @@
   // count the number of times each output position (of which there are
   // bits_in_hash_code) is 1 for each bit position within s[index] (of 
   // which there are 8) and value of that bit (of which there are 2).
-  const int jj = 2;
-  const int kk = jj * bits_in_hash_code;
-  const int array_size = 8 * kk;
+  const unsigned int jj = 2;
+  const unsigned int kk = jj * bits_in_hash_code;
+  const unsigned int array_size = 8 * kk;
   vector<int> ones(array_size, 0);
 
   for (int i = 0; i < 256; i++)
@@ -99,7 +99,7 @@
   int good = 0, bad = 0;
   for (int bit = 0; bit <= 1; bit++)
     {
-      for (int j = 0; j < bits_in_hash_code; j++)
+      for (unsigned int j = 0; j < bits_in_hash_code; j++)
         {
           for (int bitpos = 0; bitpos < 8; bitpos++)
             {
@@ -121,21 +121,21 @@
 }
 
 double
-score_from_varying_position(const vector<string>& v, int index)
+score_from_varying_position(const vector<string>& v, unsigned int index)
 {
   double score = 0;
-  for (int i = 0; i < v.size(); i++)
+  for (unsigned int i = 0; i < v.size(); i++)
     score += score_from_varying_position(v[i], index);
   return score / v.size();
 }
 
 double
-quality_test(int num_strings, int string_size)
+quality_test(unsigned int num_strings, unsigned int string_size)
 {
   // Construct random strings.
   vector<string> v = random_strings(num_strings, string_size);
   double sum_of_scores = 0;
-  for (int i = 0; i < string_size; i++)
+  for (unsigned int i = 0; i < string_size; i++)
     sum_of_scores += score_from_varying_position(v, i);
 
   // A good hash function should have a score very close to 1, and a bad
@@ -149,7 +149,7 @@
   bool test __attribute__((unused)) = true;
   srand(137);
   double sum_of_scores = 0;
-  for (int i = 0; i < num_quality_tests; i++)
+  for (unsigned int i = 0; i < num_quality_tests; i++)
     {
       double score = quality_test(num_strings_for_quality_tests,
 				  string_size);
Index: testsuite/23_containers/bitset/cons/dr1325-2.cc
===================================================================
--- testsuite/23_containers/bitset/cons/dr1325-2.cc	(revision 166105)
+++ testsuite/23_containers/bitset/cons/dr1325-2.cc	(working copy)
@@ -45,7 +45,7 @@
   VERIFY( bitset<4>(s1, 4) == test01_ref<4>(s1, 4) );
 
   const char s2[3] = { '1', '1', '0' };
-  VERIFY( bitset<6>(s1, 3) == test01_ref<6>(s1, 3) );
+  VERIFY( bitset<6>(s2, 3) == test01_ref<6>(s2, 3) );
 
   const char* s3 = "1110110";
   VERIFY( bitset<7>(s3) == test01_ref<7>(s3) );