1) The GMP version number is 4.1.4 and this is my first version of this library 2) This is my test program (I included it in this email too) #include #include int main() { mpz_t a; mpz_init(a); gmp_printf("%Zd\n",a); mpz_clear(a); return 0; } 3) I can't compile this program. I think that linker doesn't know where to find function gmp_printf. I compile it by using command gcc -lgmp prog.c -o prog 4) I don't get any crash because my program is not compiled. 5) When I was installed GMP I typed "./configure" and then "make install" (just like it is described in the manual and readme file). I didn't use any other options. 6) This is the version of my compiler: gcc version 2.96.20000731 (Red Hat Linux 7.1 2.96-81) 7) This is the output from running uname -a: Linux localhost.localdomain 2.4.2-2 #1 Sun Apr 8 20:41:30 EDT 2001 i686 unknown 8) This is the output from running ./config.guess: athlon-pc-linux-gnu and this is the output from running ./configfsf.guess: i686-pc-linux-gnu 9) I don't think so that this bug is related to configure 10) I don't know if the bug is related to an asm file so I include the contents of config.m4 //---------------------------------------------------------- dnl config.m4. Generated automatically by configure. changequote(<,>) ifdef(<__CONFIG_M4_INCLUDED__>,,< define(,<`../.'>) define(,<`no'>) define(,) define(, <.text>) define(, <.data>) define(, <$1:>) define(, <.globl>) define(, <>) define(, < .section .rodata>) define(, <>) define(, <.type $1,@$2>) define(, <.size $1,$2>) define(, <.L>) define(, <.long>) define(,) define(,) define(, <1>) define(,<50>) define(,32) define(,0) define(,eval(GMP_LIMB_BITS-GMP_NAIL_BITS)) >) changequote(`,') ifdef(`__CONFIG_M4_INCLUDED__',,` include(CONFIG_TOP_SRCDIR`/mpn/asm-defs.m4') include_mpn(`x86/x86-defs.m4') define_not_for_expansion(`HAVE_HOST_CPU_athlon') define_not_for_expansion(`HAVE_ABI_standard') ') define(`__CONFIG_M4_INCLUDED__') //---------------------------------------------------------- I didn't find any tmp-.s in the directory mpn. 11) I tested GMP very hard and the only bug I found is that when I use the gmp_printf function (or other print functions from this library) I can't compile my program. So I can't tell You anything about calculations. Now I suppose that they are correct, but I can't check it to be sure.