id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6886	Bugs in boost/regex/icu.hpp (patch included)	Martin Baute <solar@…>	John Maddock	"I am 100% sure I already reported these a couple of years
ago (when 1.45 was current), but I just realized they haven't
been fixed yet.

In boost/regex/icu.hpp:

Line 238 has a preprocessor #if that does special handling
if BOOST_NO_MEMBER_TEMPLATES or __IBMCPP__ is defined. That's
why the buggy code doesn't show itself on ""average"" machines.
However, when trying to compile Boost.regex with ICU support
on an AIX machine, compilation fails due to two bugs in the
#else part of the code.

The first bug is in line 314:

    typedef std::vector<UCHAR32> vector_type;

The type is UChar32, not UCHAR32. The two templates before
this one got it right, this template got it wrong.

The second bug is in line 318:

    v.push_back((UCHAR32)(*i));

Same as above - should be UChar32.

The third bug is a classic copy&paste error. In line 319:

    ++a;

If you look at the surrounding code, there is no ""a"" defined
here. The two previous templates define a 32-bit integer ""a""
by type-converting the ""i"" parameter (which is 8-bit in the
first template and 16-bit in the second one), but in this
third template ""i"" is 32-bit itself already, so there is no
need to convert it. You see the surrounding ""while"" loop and
the push_back() call using ""i"" directly, and the increment
should do the same.

The patch:

314c314
<    typedef std::vector<UCHAR32> vector_type;
---

    typedef std::vector<UChar32> vector_type; 

318,319c318,319
<       v.push_back((UCHAR32)(*i));
<       ++a;
---

    v.push_back((UChar32)(*i)); ++i; 


CVS Web link for ease of reference:

http://boost.cvs.sourceforge.net/viewvc/boost/boost/boost/regex/icu.hpp?view=markup

It would be nice if someone could commit this patch, because
this bug has been around since v1.33...
"	Bugs	closed	To Be Determined	regex	Boost 1.49.0	Problem	worksforme