bastring.h (unique): We only need length bytes.

* std/bastring.h (unique): We only need length bytes.
	(c_str): Avoid writing over random memory.
	#include <std/bastring.cc>.
	Lose _G_ALLOC_CONTROL.
	* std/bastring.cc: Likewise.
 	(nilRep): Add initializer for selfish.
	* sinst.cc: Just #include <string>.
Fix a couple of bugs, linux undefined symbol problem.

From-SVN: r17478

libstdc++/ChangeLog

@@ -1,3 +1,13 @@
+Sun Jan 25 14:01:50 1998  Jason Merrill  <jason@yorick.cygnus.com>
+
+	* std/bastring.h (unique): We only need length bytes.
+	(c_str): Avoid writing over random memory.
+	#include <std/bastring.cc>.
+	Lose _G_ALLOC_CONTROL.
+	* std/bastring.cc: Likewise.
+ 	(nilRep): Add initializer for selfish.
+	* sinst.cc: Just #include <string>.
+
 Tue Jan 13 21:23:05 1998  H.J. Lu  (hjl@gnu.org)
 
 	* configure.in (configdirs): Include testsuite only if

libstdc++/sinst.cc

@@ -33,7 +33,7 @@
 #endif
 #endif
 
-#include <std/bastring.cc>
+#include <string>
 
 #ifdef C
 typedef char c;

libstdc++/std/bastring.cc

@@ -25,9 +25,6 @@
 // Written by Jason Merrill based upon the specification by Takanori Adachi
 // in ANSI X3J16/94-0013R2.
 
-#include <cstddef>
-#include <std/bastring.h>
-
 extern "C++" {
 template <class charT, class traits, class Allocator>
 inline void * basic_string <charT, traits, Allocator>::Rep::
@@ -47,11 +44,7 @@ operator delete (void * ptr)
 
 template <class charT, class traits, class Allocator>
 inline size_t basic_string <charT, traits, Allocator>::Rep::
-#if _G_ALLOC_CONTROL
-default_frob (size_t s)
-#else
 frob_size (size_t s)
-#endif
 {
   size_t i = 16;
   while (i < s) i *= 2;
@@ -83,11 +76,7 @@ clone ()
 
 template <class charT, class traits, class Allocator>
 inline bool basic_string <charT, traits, Allocator>::Rep::
-#ifdef _G_ALLOC_CONTROL
-default_excess (size_t s, size_t r)
-#else
 excess_slop (size_t s, size_t r)
-#endif
 {
   return 2 * (s <= 16 ? 16 : s) < r;
 }
@@ -520,20 +509,10 @@ getline (istream &is, basic_string <charT, traits, Allocator>& s, charT delim)
 
 template <class charT, class traits, class Allocator>
 basic_string <charT, traits, Allocator>::Rep
-basic_string<charT, traits, Allocator>::nilRep = { 0, 0, 1 };
+basic_string<charT, traits, Allocator>::nilRep = { 0, 0, 1, false };
 
 template <class charT, class traits, class Allocator>
 const basic_string <charT, traits, Allocator>::size_type
 basic_string <charT, traits, Allocator>::npos;
 
-#ifdef _G_ALLOC_CONTROL
-template <class charT, class traits, class Allocator>
-bool (*basic_string <charT, traits, Allocator>::Rep::excess_slop) (size_t, size_t)
-     = basic_string <charT, traits, Allocator>::Rep::default_excess;
-
-template <class charT, class traits, class Allocator>
-size_t (*basic_string <charT, traits, Allocator>::Rep::frob_size) (size_t)
-     = basic_string <charT, traits, Allocator>::Rep::default_frob;
-#endif
-
 } // extern "C++"

libstdc++/std/bastring.h

@@ -84,22 +84,8 @@ private:
     inline void move (size_t, const charT *, size_t);
     inline void set  (size_t, const charT,   size_t);
 
-#if _G_ALLOC_CONTROL
-    // These function pointers allow you to modify the allocation policy used
-    // by the string classes.  By default they expand by powers of two, but
-    // this may be excessive for space-critical applications.
-
-    // Returns true if ALLOCATED is too much larger than LENGTH
-    static bool (*excess_slop) (size_t length, size_t allocated);
-    inline static bool default_excess (size_t, size_t);
-
-    // Returns a good amount of space to allocate for a string of length LENGTH
-    static size_t (*frob_size) (size_t length);
-    inline static size_t default_frob (size_t);
-#else
     inline static bool excess_slop (size_t, size_t);
     inline static size_t frob_size (size_t);
-#endif
 
   private:
     Rep &operator= (const Rep &);
@@ -273,7 +259,7 @@ public:
 
 private:
   static charT eos () { return traits::eos (); }
-  void unique () { if (rep ()->ref > 1) alloc (capacity (), true); }
+  void unique () { if (rep ()->ref > 1) alloc (length (), true); }
   void selfish () { unique (); rep ()->selfish = true; }
 
 public:
@@ -304,7 +290,7 @@ private:
 
 public:
   const charT* c_str () const
-    { terminate (); return data (); }
+    { if (length () == 0) return ""; terminate (); return data (); }
   void resize (size_type n, charT c);
   void resize (size_type n)
     { resize (n, eos ()); }
@@ -621,4 +607,6 @@ getline (istream&, basic_string <charT, traits, Allocator>&, charT delim = '\n')
 
 } // extern "C++"
 
+#include <std/bastring.cc>
+
 #endif