C++Talk.NET

Glenn C. Rhoads · Guest

I'm having a problem calling a C function from a publicly available
library file. To get the code to compile, I had to declare the
function as an external C function as follows.

extern "C" lib_function(....);

But when I run my C++ program, I get a segmentation fault in one
of the library functions (not the function I directly called but
one a few levels down in the calling hierarchy). According to
the user manual provided with the library, I'm passing in the
arguments correctly and I've allocated space for the arrays being
passed (each argument is either an integer or an array of integers),
hence I suspect the problem has something to do with the fact that
I'm calling a C function from within C++. (the authors claim that
the C code has no known bugs).

Any ideas on what the problem could be?

Note that I am using the gcc/g++ compiler on UNIX. In case you're
interested, the library package I'm using is called HMETIS and is
available at http://www-users.cs.umn.edu/~karypis/metis/

Also if you want to respond via email, then send your message to
rhoads <at> paul <dot> rutgers <dot> edu (the yahoo.com address
is bogus).

[ See http://www.gotw.ca/resources/clcm.htm for info about ]
[ comp.lang.c++.moderated. First time posters: Do this! ]

Ron Natalie · Guest

Glenn C. Rhoads wrote:

GTO · Guest

I assume that you know this

http://www.parashift.com/c++-faq-lite/mixing-c-and-cpp.html

Gregor

[ See http://www.gotw.ca/resources/clcm.htm for info about ]
[ comp.lang.c++.moderated. First time posters: Do this! ]