[Sglib-general] sglib + MS VS.NET 2003 problem

[David K. <kr...@at...>]

Hi,=20
first of all I'd like to say thanx for creating and publishing SGLIB fo=
r free, I am using it frequently in situations when I am forced to use =
pure C and so far it's been doing great job=2E But today I've arrived t=
o the first (quite small) problem with it=2E=20
I am using Microsoft Visual Studio =2ENET 2003=2E My problem is that th=
e debug version of my program started to abort in the middle of SGLIB c=
ode saying that "Run-Time Check Failure #3 - The variable '_cmpres_' is=
 being used without being defined=2E"=2E I've analyzed the problem care=
fully and arrived to the function=20
sglib_<my_type>_find_member=20
generated by macro SGLIB_DEFINE_SORTED_LIST_FUNCTIONS=2E=20
In sglib source code it corresponds to macro SGLIB_SORTED_LIST_FIND_MEM=
BER starting on line 494=2E
The problem is that in some situations variable _cmpres_ is defined (li=
ne 496)  but not initialized and then tested by if for equality to zero=
 (line 498)=2E This happens if the list parameter of macro is NULL=2E I=
n this case the right side of the AND (&&) operator in the middle part =
of for statement (line 497) is not executed at all and hence _cmpres_ i=
s not initialized and probably (as a result of some optimizations of mi=
crosoft's C runtime) not defined at all=2E=20
The solution could be setting _cmpres_ to (-1)  in the declaration (for=
 example, anything else than zero should work,obviously)=2E
I don't know if SGLIB is still being actively developed (fixed) and I c=
ould fix it only for my project but first anyone can arrive to the same=
 problem some day, and second according to license I think it's not per=
fectly legal to use modified version of SGLIB in commercial project, so=
 I'd like to here something from author;-)
Thanx for any answer=2E
David K=2E