id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
3348	SEGV in ~bzip2_decompressor()	basilevs@…	Jonathan Turkanis	"Destructor of unused bzip2_decompressor instance causes segmentation violation.

Function bzip2_base::end() is called from destructor without checking whether  function bzip2_base::do_init() was called earlier.
This causes a call to BZ2_bzDecompressEnd(s) without preceding call to BZ2_bzDecompressInit(s, 0, params_.small).

The problem appears with bzip2-1.0.5 compiled with mingw (gcc (GCC) 3.4.5 (mingw-vista special r3)).

A quick fix for this problem would be a test for !ready_ before calling of any BZ2_bz*compressEnd(s) functions.

I've added the line 

if (!ready_) return;

in the very beginning of function void bzip2_base::end(bool compress) in bzip2.cpp and SEGVs dissapeared.

A patch is attached. Beware incorrect directory naming in the patch file.




"	Bugs	closed	Boost 1.40.0	iostreams	Boost 1.39.0	Problem	fixed