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Minor fix in UBSan.

This commit is contained in:
Fotis Panagiotopoulos 2022-10-13 12:19:27 +03:00 committed by Petro Karashchenko
parent 06cf41901f
commit c22c07ba29
1 changed files with 3 additions and 3 deletions
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6
mm/ubsan/ubsan.c
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@ -157,11 +157,11 @@ static int64_t get_signed_val(FAR struct type_descriptor *type,
{
if (is_inline_int(type))
{
unsigned extra_bits = sizeof(int64_t) * 8 - type_bit_width(type);
uint64_t mask = (1llu << extra_bits) - 1;
unsigned bits = type_bit_width(type);
uint64_t mask = (1llu << bits) - 1;
uint64_t ret = (uint64_t)val & mask;
return (int64_t)(((ret & (1llu << (extra_bits - 1))) != 0) ?
return (int64_t)(((ret & (1llu << (bits - 1))) != 0) ?
ret | ~mask : ret);
}