>Sent: Thursday, August 24, 2017 at 5:32 PM >From: "Marc Glisse" <[email protected]> >To: "Piotr Olszewski" <[email protected]> >Cc: [email protected] >Subject: Re: GMP crashes when using gmp_scanf to scan an mpf_t. >On Thu, 24 Aug 2017, Piotr Olszewski wrote: > >> The crash happened when I tried to run a piece of code from the manual >> (11.1): >> >> /* to read say "topleft (1.55,-2.66)" */ >> mpf_t x, y; >> char buf[32]; >> gmp_scanf ("%31s (%Ff,%Ff)", buf, x, y); >> >> I placed it in a main function and added a line to print the scanned >> information like this: >> >> #include <gmp.h> >> int main(void) >> { >> /* to read say "topleft (1.55,-2.66)" */ >> mpf_t x, y; >> char buf[32]; >> gmp_scanf ("%31s (%Ff,%Ff)", buf, x, y); >> gmp_printf("%s (%Ff,%Ff)\n", buf, x, y); >> return 0; >> } > >This is not a snippet meant to be copy-pasted, the declarations are there >to show the types of the arguments, but you need to mpf_init the variables >as usual. > >-- >Marc Glisse
Thank you, I read that part of the manual a bit out of context so I assumed that no initialization was necessary. The program runs correctly now that I call mpf_init on both variables before passing them to gmp_scanf. Regards, Piotr Olszewski. _______________________________________________ gmp-bugs mailing list [email protected] https://gmplib.org/mailman/listinfo/gmp-bugs
