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patch 8.2.5004: right shift on negative number does not work as documented

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Problem:    Right shift on negative number does not work as documented.
Solution:   Use a uvarnumber_T type cast.
This commit is contained in:
Bram Moolenaar
2022-05-22 20:16:32 +01:00
parent a061f34191
commit 338bf58eba
7 changed files with 26 additions and 19 deletions
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7
src/vim9expr.c
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@@ -2719,11 +2719,8 @@ compile_expr5(char_u **arg, cctx_T *cctx, ppconst_T *ppconst)
else if (type == EXPR_LSHIFT)
tv1->vval.v_number = tv1->vval.v_number << tv2->vval.v_number;
else
{
tv1->vval.v_number = tv1->vval.v_number >> tv2->vval.v_number;
// clear the topmost sign bit
tv1->vval.v_number &= ~((uvarnumber_T)1 << MAX_LSHIFT_BITS);
}
tv1->vval.v_number =
(uvarnumber_T)tv1->vval.v_number >> tv2->vval.v_number;
clear_tv(tv2);
--ppconst->pp_used;
}