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patch 8.2.5006: asan warns for undefined behavior

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Problem:    Asan warns for undefined behavior.
Solution:   Cast the shifted value to unsigned.
This commit is contained in:
Bram Moolenaar
2022-05-22 22:07:52 +01:00
parent 5b529230f1
commit 68e64d2c17
4 changed files with 6 additions and 3 deletions
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2
src/eval.c
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@@ -3089,7 +3089,7 @@ eval5(char_u **arg, typval_T *rettv, evalarg_T *evalarg)
rettv->vval.v_number = 0;
else if (type == EXPR_LSHIFT)
rettv->vval.v_number =
rettv->vval.v_number << var2.vval.v_number;
(uvarnumber_T)rettv->vval.v_number << var2.vval.v_number;
else
rettv->vval.v_number =
(uvarnumber_T)rettv->vval.v_number >> var2.vval.v_number;