--- libg++-2.7.1/libio/strstream.cc.orig	Thu Jun 15 23:42:49 1995
+++ libg++-2.7.1/libio/strstream.cc	Fri May  9 20:37:22 1997
@@ -141,11 +141,38 @@
 
 void strstreambuf::init_static(char *ptr, int size, char *pstart)
 {
+ /* Patch (chunk 1/2) by Wolfgang Reimer <reimer@e-technik.tu-ilmenau.de>
+  * Date: 5/7/97
+  * fixes a memory allocation bug in the libio code. The bug will become 
+  * effective when the allocation methods assigned to 
+  * _allocate_buffer/_free_buffer are different from the allocation methods 
+  * assigned to ALLOC_BUF/FREE_BUF in the C part of libio. This condition is 
+  * true in the default case when using the linux-libc5.3.12+ which now uses 
+  * mmap/munmap for buffer allocation handling (POSIX?). 
+  * Calling the function assigned to _s._free_buffer at this point will make 
+  * sure that the buffer memory will be freed with the right method. Otherwise 
+  * the call to the below C function will free the buffer [exactly in 
+  * _IO_setb()] with the method defined to ALLOC_BUF in the C part of libio.
+  */
+  if (_IO_buf_base && !(_flags & _IO_USER_BUF))
+      (_s._free_buffer)(_IO_buf_base);
+  _IO_buf_base = NULL;
+ /* End allocation bug fix (chunk 1/2) */
+
   _IO_str_init_static (this, ptr, size, pstart);
 }
 
 void strstreambuf::init_readonly (const char *ptr, int size)
 {
+ /* Patch (chunk 2/2) by Wolfgang Reimer <reimer@e-technik.tu-ilmenau.de>
+  * Date: 5/7/97
+  * fixes a memory allocation bug in the libio code (see explanation above).
+  */
+  if (_IO_buf_base && !(_flags & _IO_USER_BUF))
+      (_s._free_buffer)(_IO_buf_base);
+  _IO_buf_base = NULL;
+ /* End allocation bug fix (chunk 2/2) */
+
   _IO_str_init_readonly (this, ptr, size);
 }