oysteikt/heimdal
0
0
Fork 0
Code Issues 5 Pull Requests Releases Activity

roken: strtoll.c negation is a no-op on unsigned integer

Browse Source 
strtoll() returns a signed long long not an unsigned long long.
When applying the negation for negatives the value must be cast
from unsigned to signed and then stored in a signed variable
before returning it.

Change-Id: If568afd2509d27c7bf206ca59d32ca150cb34857
This commit is contained in:
Jeffrey Altman
2019-01-21 22:25:19 -05:00
parent 3bbd8663b0
commit b10ad7eb57
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/roken/strtoll.c
View File

@@ -57,6 +57,7 @@ strtoll(const char * nptr, char ** endptr, int base)
{
const char *s;
unsigned long long acc;
long long ret = 0;
char c;
unsigned long long cutoff;
int neg, any, cutlim;
@@ -135,15 +136,14 @@ strtoll(const char * nptr, char ** endptr, int base)
}
}
if (any < 0) {
acc = neg ? LLONG_MIN : LLONG_MAX;
ret = neg ? LLONG_MIN : LLONG_MAX;
errno = ERANGE;
} else if (!any) {
noconv:
errno = EINVAL;
} else if (neg)
acc = -acc;
ret = -(long long)acc;
if (endptr != NULL)
*endptr = (char *)(any ? s - 1 : nptr);
return (acc);
return ret;
}