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mruby-bigint: add checks for divided by zero by sizes and contents

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This commit is contained in:
Yukihiro "Matz" Matsumoto
2024-10-24 07:18:34 +09:00
parent 5e9593e285
commit c5565a37ac
1 changed files with 5 additions and 5 deletions
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mrbgems/mruby-bigint/core/bigint.c
+5 -5
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@@ -1128,7 +1128,7 @@ mpz_pow(mrb_state *mrb, mpz_t *zz, mpz_t *x, mrb_int e)
static void
mpz_powm(mrb_state *mrb, mpz_t *zz, mpz_t *x, mpz_t *ex, mpz_t *n)
{
if (zero_p(ex)) {
if (zero_p(ex) || uzero_p(ex)) {
mpz_set_int(mrb, zz, 1);
return;
}
@@ -1566,7 +1566,7 @@ mrb_bint_div(mrb_state *mrb, mrb_value x, mrb_value y)
y = mrb_as_bint(mrb, y);
bint_as_mpz(RBIGINT(y), &b);
if (zero_p(&b)) {
if (zero_p(&b) || uzero_p(&b)) {
mrb_int_zerodiv(mrb);
}
bint_as_mpz(RBIGINT(x), &a);
@@ -1633,7 +1633,7 @@ mrb_bint_mod(mrb_state *mrb, mrb_value x, mrb_value y)
mpz_t a, b, z;
y = mrb_as_bint(mrb, y);
bint_as_mpz(RBIGINT(y), &b);
if (zero_p(&b)) {
if (zero_p(&b) || uzero_p(&b)) {
mrb_int_zerodiv(mrb);
}
bint_as_mpz(RBIGINT(x), &a);
@@ -1653,7 +1653,7 @@ mrb_bint_rem(mrb_state *mrb, mrb_value x, mrb_value y)
mpz_t a, b, z;
y = mrb_as_bint(mrb, y);
bint_as_mpz(RBIGINT(y), &b);
if (zero_p(&b)) {
if (zero_p(&b) || uzero_p(&b)) {
mrb_int_zerodiv(mrb);
}
bint_as_mpz(RBIGINT(x), &a);
@@ -1673,7 +1673,7 @@ mrb_bint_divmod(mrb_state *mrb, mrb_value x, mrb_value y)
y = mrb_as_bint(mrb, y);
mpz_t a, b, c, d;
bint_as_mpz(RBIGINT(y), &b);
if (zero_p(&b)) {
if (zero_p(&b) || uzero_p(&b)) {
mrb_int_zerodiv(mrb);
}
bint_as_mpz(RBIGINT(x), &a);