sbuf_iter.h (istreambuf_iterator): Correct.

2001-05-01  Benjamin Kosnik  <bkoz@redhat.com>

	* include/bits/sbuf_iter.h (istreambuf_iterator): Correct.
	* testsuite/24_iterators/istreambuf_iterator.cc (test02): Add test.

	* include/bits/std_sstream.h (stringbuf): Leak
	copied string.
	* testsuite/24_iterators/ostreambuf_iterator.cc: Correct.

From-SVN: r41755

5 files changed, 75 insertions, 23 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index c682576..49a8cf8 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,12 @@
+2001-05-01  Benjamin Kosnik  <bkoz@redhat.com>
+
+	* include/bits/sbuf_iter.h (istreambuf_iterator): Correct.
+	* testsuite/24_iterators/istreambuf_iterator.cc (test02): Add test.
+
+	* include/bits/std_sstream.h (stringbuf): Leak
+	copied string.
+	* testsuite/24_iterators/ostreambuf_iterator.cc: Correct.
+	
 2001-05-01  Tom Browder  <tbrowder@home.com>
 
 	* docs/html/ext/howto.html:  Fix typo.
diff --git a/libstdc++-v3/include/bits/sbuf_iter.h b/libstdc++-v3/include/bits/sbuf_iter.h
index 6bec6d2..4935c11 100644
--- a/libstdc++-v3/include/bits/sbuf_iter.h
+++ b/libstdc++-v3/include/bits/sbuf_iter.h
@@ -141,18 +141,15 @@ namespace std
 	return *this; 
       }
 
-#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
-      // 14882 says return a proxy object. It should be a const
-      // proxy object, but since this class is not mandated, it
-      // should allow this signature:
-      const __istreambufiter_type
+      __istreambufiter_type
       operator++(int)
       {
+	__istreambufiter_type __old = *this;
 	if (_M_sbuf)
-	  _M_c = _M_sbuf->sbumpc();
-	return *this; 
+	  __old._M_c = _M_sbuf->sbumpc();
+	_M_c = -2;
+	return __old; 
       }
-#endif
 
       bool 
       equal(const __istreambufiter_type& __b)
@@ -205,3 +202,6 @@ namespace std
 } // namespace std
 
 #endif
+
+
+
diff --git a/libstdc++-v3/include/bits/std_sstream.h b/libstdc++-v3/include/bits/std_sstream.h
index 9a1e75a..0da71e4 100644
--- a/libstdc++-v3/include/bits/std_sstream.h
+++ b/libstdc++-v3/include/bits/std_sstream.h
@@ -71,16 +71,14 @@ namespace std
       explicit 
       basic_stringbuf(const __string_type& __str,
 		      ios_base::openmode __mode = ios_base::in | ios_base::out)
-      : __streambuf_type(), _M_string(__str)
+      : __streambuf_type(), _M_string(__str.c_str())
       { _M_stringbuf_init(__mode); }
 
       // Get and set:
       __string_type 
       str() const 
       {
-	if (_M_mode & ios_base::in && !(_M_mode & ios_base::out))
-	  return _M_string; 
-	else
+	if (_M_mode & ios_base::out)
 	  {
 	    // This is the deal: _M_string.size() is value that
 	    // represents the size of the intial string that makes
@@ -91,6 +89,8 @@ namespace std
 	      __len = max(__size_type(_M_out_end - _M_out_beg), __len);
 	    return __string_type(_M_out_beg, _M_out_beg + __len);
 	  }
+	else
+	  return _M_string;
       }
 
       void 
@@ -121,7 +121,7 @@ namespace std
 	if (_M_mode & ios_base::ate)
 	  _M_really_sync(0, _M_buf_size); 
 	else  
-	  _M_really_sync(0, 0); 
+	  _M_really_sync(0, 0);
       }
 
       // Overridden virtual functions:
diff --git a/libstdc++-v3/testsuite/24_iterators/istreambuf_iterator.cc b/libstdc++-v3/testsuite/24_iterators/istreambuf_iterator.cc
index 78d3633..8325c97 100644
--- a/libstdc++-v3/testsuite/24_iterators/istreambuf_iterator.cc
+++ b/libstdc++-v3/testsuite/24_iterators/istreambuf_iterator.cc
@@ -1,6 +1,6 @@
 // 1999-06-28 bkoz
 
-// Copyright (C) 1999 Free Software Foundation, Inc.
+// Copyright (C) 1999, 2001 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -102,7 +102,7 @@ bool test01(void)
 
   std::istringstream istrs02(str01);
   cistreambuf_iter istrb_it28(istrs02);
-  for (int i = 0; i < sizeof(slit01) - 3;)
+  for (int i = 0; i < sizeof(slit01) - 2;)
     {
       c = *++istrb_it28;
       VERIFY( c == slit01[++i] );
@@ -115,9 +115,46 @@ bool test01(void)
   return test;
 }
 
+// libstdc++/2627
+void test02()
+{
+  bool test = true;
+  const std::string s("free the vieques");
+
+  // 1
+  std::string res_postfix;
+  std::istringstream iss01(s);
+  std::istreambuf_iterator<char> isbufit01(iss01);
+  for (int j = 0; j < s.size(); ++j, isbufit01++)
+    res_postfix += *isbufit01;
+
+  // 2
+  std::string res_prefix;
+  std::istringstream iss02(s);
+  std::istreambuf_iterator<char> isbufit02(iss02);
+  for (int j = 0; j < s.size(); ++j, ++isbufit02)
+    res_prefix += *isbufit02;
+
+  // 3 mixed
+  std::string res_mixed;
+  std::istringstream iss03(s);
+  std::istreambuf_iterator<char> isbufit03(iss03);
+  for (int j = 0; j < int(s.size() / 2); ++j)
+    {
+      res_mixed += *isbufit03;
+      ++isbufit03;
+      res_mixed += *isbufit03;
+      isbufit03++;
+    }
+
+  VERIFY ( res_postfix == res_prefix );
+  VERIFY ( res_mixed == res_prefix );
+}
+
 int main()
 {
   test01();
+  test02();
 
   return 0;
 }
diff --git a/libstdc++-v3/testsuite/24_iterators/ostreambuf_iterator.cc b/libstdc++-v3/testsuite/24_iterators/ostreambuf_iterator.cc
index 9f1544f..eec7f98 100644
--- a/libstdc++-v3/testsuite/24_iterators/ostreambuf_iterator.cc
+++ b/libstdc++-v3/testsuite/24_iterators/ostreambuf_iterator.cc
@@ -30,7 +30,9 @@ bool test01(void)
   typedef costreambuf_iter::streambuf_type cstreambuf_type;
   bool test = true;
   const char slit01[] = "playa hermosa, liberia, guanacaste";
+  const char slit02[] = "bodega bay, lost coast, california";
   std::string str01(slit01);
+  std::string str02(slit02);
   std::string tmp;
   std::stringbuf     strbuf01;
   std::stringbuf     strbuf02(str01);
@@ -61,21 +63,25 @@ bool test01(void)
   // charT operator*() const
   // ostreambuf_iterator& operator++();
   // ostreambuf_iterator& operator++(int);
-  costreambuf_iter ostrb_it27(ostrs00);
+  costreambuf_iter ostrb_it27(ostrs01);
   VERIFY( !ostrb_it27.failed() );
-  for (int i = 0; i < strlen(slit01) - 2; ++i)
-    ostrb_it27 = 'a';
+  int j = str02.size();
+  for (int i = 0; i < j; ++i)
+    ostrb_it27 = str02[i];
   VERIFY( !ostrb_it27.failed() );
-  tmp = ostrs00.str();
-  VERIFY ( tmp == str01 );
+  tmp = ostrs01.str();
+  VERIFY ( tmp != str01 );
+  VERIFY ( tmp == str02 );
 
-  costreambuf_iter ostrb_it28(ostrs01);
+  costreambuf_iter ostrb_it28(ostrs00);
   VERIFY( !ostrb_it28.failed() );
-  for (int i = 0; i < strlen(slit01) + 1; ++i)
+  j = ostrs00.str().size();
+  for (int i = 0; i < j + 2; ++i)
     ostrb_it28 = 'b';
   VERIFY( !ostrb_it28.failed() );
-  tmp = ostrs01.str();
+  tmp = ostrs00.str();
   VERIFY ( tmp != str01 );
+  VERIFY ( tmp != str02 );
 
 #ifdef DEBUG_ASSERT
   assert(test);