admin/mruby-mruby
1
0
Fork 0
mirror of https://github.com/mruby/mruby synced 2026-06-08 16:11:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

bigint.c: cast to unsigned integer to avoid undefined behavior.

Browse Source
This commit is contained in:
Yukihiro "Matz" Matsumoto
2022-04-18 11:34:30 +09:00
parent 25e6e24c19
commit 96ff3c31c4
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/bigint.c
+2 -2
View File
@@ -390,10 +390,10 @@ ulshift(mrb_state *mrb, mpz_t *c1, mpz_t *a, int n)
mpz_set(mrb,c1,a);
else {
mpz_t c; size_t i;
mp_limb rm = (((mp_limb)1<<n) - 1) << (DIGITBITS-n);
mp_limb rm = (((mp_ulimb)1<<n) - 1) << (DIGITBITS-n);
mpz_init(mrb,&c); mpz_realloc(mrb,&c,(size_t)(a->sz + 1));
for (i=0; i<a->sz; i++) {
c.p[i] = (((mp_limb)a->p[i] << n) | cc) & LMAX;
c.p[i] = (((mp_ulimb)a->p[i] << n) | cc) & LMAX;
cc = (a->p[i] & rm) >> (DIGITBITS -n);
}
c.p[i] = cc;