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fix #6148

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This commit is contained in:
Christian Grothoff 2020-04-02 14:01:41 +02:00
parent a039926bb6
commit e9de3374a9
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GPG Key ID: 939E6BE1E29FC3CC
1 changed files with 10 additions and 13 deletions
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23
src/util/amount.c
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@ -529,26 +529,23 @@ TALER_amount_add (struct TALER_Amount *sum,
int
TALER_amount_normalize (struct TALER_Amount *amount)
{
int ret;
uint32_t overflow;
if (GNUNET_YES != TALER_amount_is_valid (amount))
return GNUNET_SYSERR;
ret = GNUNET_NO;
while ( (amount->value != UINT64_MAX) &&
(amount->fraction >= TALER_AMOUNT_FRAC_BASE) )
if (amount->fraction < TALER_AMOUNT_FRAC_BASE)
return GNUNET_NO;
overflow = amount->fraction / TALER_AMOUT_FRAC_BASE;
amount->fraction %= TALER_AMOUNT_FRAC_BASE;
amount->value += overflow;
ret = GNUNET_OK;
if ( (amount->value < overflow) ||
(amount->value > MAX_AMOUNT_VALUE) )
{
amount->fraction -= TALER_AMOUNT_FRAC_BASE;
amount->value++;
ret = GNUNET_OK;
}
if (amount->fraction >= TALER_AMOUNT_FRAC_BASE)
{
/* failed to normalize, adding up fractions caused
main value to overflow! */
invalidate (amount);
return GNUNET_SYSERR;
}
return ret;
return GNUNET_OK;
}