basic_string.h (string::compare): Adjust signatures as per DR 5.

2001-06-11  Benjamin Kosnik  <bkoz@redhat.com>

	libstdc++/3126
	* include/bits/basic_string.h (string::compare): Adjust signatures
	as per DR 5.
	* include/bits/basic_string.tcc: And here.

	libstdc++/2346
	* config/c_io_stdio.h: Remove whitespace.
	* testsuite/27_io/istream_seeks.cc (test03): Add regression.
	(test02): Add regression.
	* testsuite/27_io/istream_seeks-3.tst: New file.

From-SVN: r43240

6 files changed, 122 insertions, 16 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index c815979..ccf316f 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,16 @@
+2001-06-11  Benjamin Kosnik  <bkoz@redhat.com>
+
+	libstdc++/3126
+	* include/bits/basic_string.h (string::compare): Adjust signatures
+	as per DR 5.
+	* include/bits/basic_string.tcc: And here.
+
+	libstdc++/2346
+	* config/c_io_stdio.h: Remove whitespace.
+	* testsuite/27_io/istream_seeks.cc (test03): Add regression.
+	(test02): Add regression.
+	* testsuite/27_io/istream_seeks-3.tst: New file.
+	
 2001-06-11  Phil Edwards  <pme@sources.redhat.com>
 
 	* README:  Update to reflect reality.
diff --git a/libstdc++-v3/config/c_io_stdio.h b/libstdc++-v3/config/c_io_stdio.h
index f24f6a8..1ea8b30 100644
--- a/libstdc++-v3/config/c_io_stdio.h
+++ b/libstdc++-v3/config/c_io_stdio.h
@@ -92,13 +92,3 @@ namespace std
 }
 
 #endif // _CPP_IO_STDIO_H
-
-
-
-
-
-
-
-
-
-
diff --git a/libstdc++-v3/include/bits/basic_string.h b/libstdc++-v3/include/bits/basic_string.h
index 4067396..ef08da1 100644
--- a/libstdc++-v3/include/bits/basic_string.h
+++ b/libstdc++-v3/include/bits/basic_string.h
@@ -842,9 +842,15 @@ namespace std
       int 
       compare(const _CharT* __s) const;
 
+#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
+// 5. String::compare specification questionable
+      int 
+      compare(size_type __pos, size_type __n1, const _CharT* __s) const;
+
       int 
       compare(size_type __pos, size_type __n1, const _CharT* __s, 
-	      size_type __n2 = npos) const;
+	      size_type __n2) const;
+#endif
   };
 
 
diff --git a/libstdc++-v3/include/bits/basic_string.tcc b/libstdc++-v3/include/bits/basic_string.tcc
index 7c74b67..9a05d2c 100644
--- a/libstdc++-v3/include/bits/basic_string.tcc
+++ b/libstdc++-v3/include/bits/basic_string.tcc
@@ -812,6 +812,24 @@ namespace std
   template<typename _CharT, typename _Traits, typename _Alloc>
     int
     basic_string <_CharT,_Traits,_Alloc>::
+    compare(size_type __pos, size_type __n1, const _CharT* __s) const
+    {
+      size_type __size = this->size();
+      if (__pos > __size)
+	__throw_out_of_range("basic_string::compare");
+      
+      size_type __osize = traits_type::length(__s);
+      size_type __rsize = min(__size - __pos, __n1);
+      size_type __len = min(__rsize, __osize);
+      int __r = traits_type::compare(_M_data() + __pos, __s, __len);
+      if (!__r)
+	__r = __rsize - __osize;
+      return __r;
+    }
+
+  template<typename _CharT, typename _Traits, typename _Alloc>
+    int
+    basic_string <_CharT,_Traits,_Alloc>::
     compare(size_type __pos, size_type __n1, const _CharT* __s, 
 	    size_type __n2) const
     {
@@ -839,7 +857,6 @@ namespace std
       _Traits::copy(__buf, __str.data(), __bytes);
       __buf[__bytes] = _CharT();
     }
+} // namespace std
 
-} // std::
-
-#endif /* _CPP_BITS_STRING_TCC */
+#endif
diff --git a/libstdc++-v3/testsuite/27_io/istream_seeks-3.tst b/libstdc++-v3/testsuite/27_io/istream_seeks-3.tst
new file mode 100644
index 0000000..dc45fc9
--- /dev/null
+++ b/libstdc++-v3/testsuite/27_io/istream_seeks-3.tst
@@ -0,0 +1,10 @@
+0-0 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-1 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-2 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-3 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-4 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-5 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-6 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-7 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-8 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
+0-9 lootpack, peanut butter wolf, rob swift, madlib, quasimoto
diff --git a/libstdc++-v3/testsuite/27_io/istream_seeks.cc b/libstdc++-v3/testsuite/27_io/istream_seeks.cc
index 97ef01b..a8f138e 100644
--- a/libstdc++-v3/testsuite/27_io/istream_seeks.cc
+++ b/libstdc++-v3/testsuite/27_io/istream_seeks.cc
@@ -1,6 +1,6 @@
 // 2000-06-29 bkoz
 
-// Copyright (C) 2000 Free Software Foundation
+// Copyright (C) 2000, 2001 Free Software Foundation
 //
 // 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
@@ -28,7 +28,6 @@
 #include <fstream>
 #include <debug_assert.h>
 
-
 bool test01()
 {
   using namespace std;
@@ -64,6 +63,71 @@ bool test01()
   return test;
 }
 
+const char* s = " lootpack, peanut butter wolf, rob swift, madlib, quasimoto";
+const int times = 10;
+
+void write_rewind(std::iostream& stream)
+{
+  for (int j = 0; j < times; j++) 
+    {
+      bool test = true;
+      std::streampos begin = stream.tellg();
+      
+      for (int i = 0; i < times; ++i)
+	stream << j << '-' << i << s << '\n';
+      
+      stream.seekg(begin);
+      std::streampos end = stream.tellg(); 
+      std::streampos badpos = std::streampos(std::streambuf::off_type(-1));
+    }
+}
+
+void check_contents(std::iostream& stream)
+{
+  bool test = true;
+
+  stream.clear();
+  stream.seekg(0, std::ios::beg);
+  int i = 0;
+  int loop = times * times + 2;
+  while (i < loop)
+    {
+      stream.ignore(80, '\n');
+      if (stream.good())
+	++i;
+      else
+	break;
+    }
+  VERIFY( i == times );
+}
+
+// fstream
+// libstdc++/2346
+void test02()
+{	 
+  std::fstream ofstrm;
+  ofstrm.open("istream_seeks-3.txt", std::ios::out);
+  if (!ofstrm)
+    abort();
+  write_rewind(ofstrm);
+  ofstrm.close();
+
+  std::fstream ifstrm;
+  ifstrm.open("istream_seeks-3.txt", std::ios::in);
+  check_contents(ifstrm);
+  ifstrm.close();
+}
+
+// stringstream
+// libstdc++/2346
+void test03()
+{	 
+  std::stringstream sstrm;
+
+  write_rewind(sstrm);
+  check_contents(sstrm);
+}
+
 // fstreams
 void test04(void)
 {
@@ -289,7 +353,13 @@ void test05(void)
 int main()
 {
   test01();
+
+  test02();
+  test03();
+
   test04();
   test05();
   return 0;
 }
+
+