Yukihiro "Matz" Matsumoto 29b3405283 bigint.c: handle in-place operation in mpz_mod_2exp() ...

when mpz_mod_2exp() is called with z == x (in-place operation), the
function was calling mpz_clear(ctx, z) which freed x's memory, then
attempting to access x->p[i] - reading freed memory. this caused
Barrett reduction to produce incorrect results in modular
exponentiation.

the fix checks if z == x and handles in-place modification by
adjusting the size and masking directly, without clearing. this is
similar to the memory leak fix for pool→heap transitions.

Co-authored-by: Claude <noreply@anthropic.com>

2025-12-01 18:20:44 +09:00

..

bigint.c

bigint.c: handle in-place operation in mpz_mod_2exp()

2025-12-01 18:20:44 +09:00

bigint.h

misc: fix spelling

2025-05-14 02:01:02 +10:00