arm-none-eabi-gcc version 8 and later produce a GMP arithmetic error

When building GMP with arm-none-eabi-gcc version 7, everything is fine.
But when using version 8, 9 or 10 the code below produces a wrong output:

    mpz_t t; mpz_init(t);
    mpz_t tt; mpz_init(tt);
    mpz_t ttt; mpz_init(ttt);
    mpz_set_str(tt,
"25975415027868818028037643145183730078267964363630309107863975221668725232906664910091356673487591948237515304861352649057814029879720636142810833722202669061030484458925649047021859875730105532595466846094449735851132072400310565642",
10);
    mpz_set_str(t,
"6864797660130609714981900799081393217269435300143305409394463459185543183397655394245057746333217197532963996371363321113864768612440380340372808892707005449",
10);
    mpz_mod(ttt, tt, t);
    printf("tt = "); gmp_printf("%Zd", tt); printf("\n");
    printf("t = "); gmp_printf("%Zd", t); printf("\n");
    printf("ttt = "); gmp_printf("%Zd", ttt); printf("\n");
    mpz_clear(t);
    mpz_clear(tt);
    mpz_clear(ttt);

The result is:

tt =
25975415027868818028037643145183730078267964363630309107863975221668725232906664910091356673487591948237515304861352649057814029879720636142810833722202669061030484458925649047021859875730105532595466846094449735851132072400310565642
t =
6864797660130609714981900799081393217269435300143305409394463459185543183397655394245057746333217197532963996371363321113864768612440380340372808892707005449
ttt =
3578942983869995381409279381784954092773488221200587338717407747084074518600438737913956360066709506626656635118978526559637095289631190671071178702312877654

but ttt should be
5247183143879283565064056089869553515440215252945038779070795247972433237341511292686962488915110675351673985513318500576097977116134885013371639187873069514

I crosscompile for a STM32F4 board.
The GMP function "mpz_probab_prime_p" is also returning a wrong result when GMP is compile with arm-none-eabi-gcc version 8, 9 or 10.

I used the binary package for linux given here: https://developer.arm.com/tools-and-software/open-source-software/developer-tools/gnu-toolchain/gnu-rm/downloads

I have a test program to reproduce the bug, but I cannot attach anything here.

Best Regards,

Titouan Coladon