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

numeric.c (mrb_div_int_value): should support integer overflow.

Browse Source 
Especially in `MRB_INT_MIN/-1` which is bigger than MRB_INT_MAX.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2022-07-09 15:21:45 +09:00
parent fa0ff7cf86
commit 48b43af37f
1 changed files with 5 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/numeric.c
+5 -7
View File
@@ -130,7 +130,11 @@ mrb_div_int_value(mrb_state *mrb, mrb_int x, mrb_int y)
mrb_int_zerodiv(mrb);
}
else if(x == MRB_INT_MIN && y == -1) {
#ifdef MRB_USE_BIGINT
return mrb_bint_mul_ii(mrb, x, y);
#else
mrb_int_overflow(mrb, "division");
#endif
}
return mrb_int_value(mrb, mrb_div_int(x, y));
}
@@ -158,13 +162,7 @@ int_div(mrb_state *mrb, mrb_value x)
if (a == 0) return mrb_fixnum_value(0);
if (mrb_integer_p(y)) {
mrb_int b = mrb_integer(y);
#ifdef MRB_USE_BIGINT
if(a == MRB_INT_MIN && b == -1) {
return mrb_bint_mul_ii(mrb, a, b);
}
#endif
return mrb_div_int_value(mrb, a, b);
return mrb_div_int_value(mrb, a, mrb_integer(y));
}
switch (mrb_type(y)) {
#ifdef MRB_USE_BIGINT