1 files changed, 22 insertions, 3 deletions
diff --git a/libstdc++-v3/testsuite/21_strings/capacity.cc b/libstdc++-v3/testsuite/21_strings/capacity.cc
index b93e6fe64c8..8239f1b6488 100644
--- a/libstdc++-v3/testsuite/21_strings/capacity.cc
+++ b/libstdc++-v3/testsuite/21_strings/capacity.cc
@@ -22,7 +22,7 @@
 
 #include <string>
 #include <cstdio>
-#include <debug_assert.h>
+#include <testsuite_hooks.h>
 
 template<typename T>
   struct A { };
@@ -169,11 +169,30 @@ bool test01()
   return test;
 }
 
+// libstdc++/4548
+// http://gcc.gnu.org/ml/libstdc++/2001-11/msg00150.html
+bool test02()
+{
+  bool test = true;
+
+  std::string str01 = "twelve chars";
+  // str01 becomes shared
+  std::string str02 = str01;
+  str01.reserve(1);
+  VERIFY( str01.capacity() == 12 );
+
+#ifdef DEBUG_ASSERT
+  assert(test);
+#endif
+
+  return test;
+}
+
+
 int main()
 {
   test01();
+  test02();
 
   return 0;
 }
-
-