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fix json_parse_uint64() usage of errno

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introduced in #542
fixes #601
This commit is contained in:
Pierce Lopez
2020-05-10 13:20:02 -04:00
parent 26f080997d
commit 003b58782b
3 changed files with 8 additions and 9 deletions
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8
json_util.c
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@@ -245,19 +245,17 @@ int json_parse_uint64(const char *buf, uint64_t *retval)
{
char *end = NULL;
uint64_t val;
errno = 1;
errno = 0;
while (*buf == ' ')
{
buf++;
}
if (*buf == '-')
errno = 0;
return 1; /* error: uint cannot be negative */
val = strtoull(buf, &end, 10);
if (end != buf)
*retval = val;
return ((errno == 0) || (end == buf)) ? 1 : 0;
return ((val == 0 && errno != 0) || (end == buf)) ? 1 : 0;
}
#ifndef HAVE_REALLOC

1
json_util.h
View File

@@ -100,6 +100,7 @@ JSON_EXPORT int json_object_to_fd(int fd, struct json_object *obj, int flags);
*/
JSON_EXPORT const char *json_util_get_last_err(void);
/* these parsing helpers return zero on success */
JSON_EXPORT int json_parse_int64(const char *buf, int64_t *retval);
JSON_EXPORT int json_parse_uint64(const char *buf, uint64_t *retval);
JSON_EXPORT int json_parse_double(const char *buf, double *retval);

8
tests/test_parse_int64.expected
View File

@@ -34,13 +34,13 @@ buf=123 parseit=0, value=123
==========json_parse_uint64() test===========
buf=x parseit=1, value=666
buf=0 parseit=0, value=0
buf=-0 parseit=1, value=0
buf=-0 parseit=1, value=666
buf=00000000 parseit=0, value=0
buf=-00000000 parseit=1, value=0
buf=-00000000 parseit=1, value=666
buf=1 parseit=0, value=1
buf=2147483647 parseit=0, value=2147483647
buf=-1 parseit=1, value=18446744073709551615
buf=-9223372036854775808 parseit=1, value=9223372036854775808
buf=-1 parseit=1, value=666
buf=-9223372036854775808 parseit=1, value=666
buf= 1 parseit=0, value=1
buf=00001234 parseit=0, value=1234
buf=0001234x parseit=0, value=1234