Hi! I found out that the prototypes for backtrace() and backtrace_symbol() differ on some operating systems. These are the same: Linux: int backtrace(void **buffer, int size); char **backtrace_symbols(void *const *buffer, int size); void backtrace_symbols_fd(void *const *buffer, int size, int fd); Mac OS X: int backtrace(void **buffer, int size); char **backtrace_symbols(void *const *buffer, int size); void backtrace_symbols_fd(void* const* array, int size, int fd); SunOS: int backtrace(void **buffer, int size); char **backtrace_symbols(void *const *buffer, int size); void backtrace_symbols_fd(void *const *buffer, int size, int fd); This one's different: NetBSD: size_t backtrace(void **addrlist, size_t len); char **backtrace_symbols(void * const *addrlist, size_t len); int backtrace_symbols_fd(void * const *addrlist, size_t len, int fd); The main difference is that on NetBSD, size_t is used for most arguments that are int on the other systems; also, backtrace_symbols_fd returns an int. I'd like to test for the difference int <-> size_t in a configure script so I can get integer type/sign conversion-warnings free code on all these operating systems. I'm however not sure how to do this. Does anyone have a suggestion? Thanks, Thomas _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf