libstdc++/10478: stdio_filebuf corrupts output for buffer sizes 1,2,3The

[paolo@gcc.gnu.org]

Synopsis: stdio_filebuf corrupts output for buffer sizes 1,2,3The

State-Changed-From-To: open->closed
State-Changed-By: paolo
State-Changed-When: Thu Apr 24 11:39:22 2003
State-Changed-Why:
    Already fixed for the forthcoming 3.3 release with:
    2003-03-31  Paolo Carlini  <pcarlini@unitus.it>
    
    	* include/ext/stdio_filebuf.h
    	(stdio_filebuf::stdio_filebuf(int, openmode, bool, size_t),
    	stdio_filebuf::stdio_filebuf(__c_file*, openmode, size_t):
    	_M_buf_size_opt == 0 means only "not to use an allocated buffer"
    	since a stack-based buffer is used for small values of the size_t
    	parameter.
    	* include/bits/fstream.tcc (basic_filebuf::_M_really_overflow).
    	If _M_buf_size != 0 flush out the buffer (any kind, stack-based too).
    	* testsuite/ext/stdio_filebuf_2.cc: New testfile.

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