Yukihiro "Matz" Matsumoto 53ee1a7826 bigint.c: fix memory leak in mpz_div_2exp ...

mpz_div_2exp() was calling mpz_init_heap() on output parameter z
without first freeing z's existing memory. When called from
mpz_barrett_reduce() with pre-allocated temporaries, this caused
memory leaks.

Add mpz_clear(ctx, z) before mpz_init_heap() in both affected code
paths, matching the pattern already used in mpz_mod_2exp().

Fixes ClusterFuzz issue detected with input "8.pow 7*2515881+186,8 ^4>>-509".

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

2025-12-30 18:20:41 +09:00

..

bigint.c

bigint.c: fix memory leak in mpz_div_2exp

2025-12-30 18:20:41 +09:00

bigint.h

misc: fix spelling

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