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Fixed lwip_itoa (bug #51729) and added unit tests for it

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goldsimon
2017-12-23 20:35:18 +01:00
parent b07a481f66
commit c6887522fe
4 changed files with 96 additions and 9 deletions
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14
src/core/def.c
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@@ -201,7 +201,8 @@ lwip_itoa(char *result, size_t bufsize, int number)
char *tmp = result;
size_t res_left = bufsize;
size_t result_len;
int n = (number > 0) ? number : -number;
int pos = number >= 0;
int n = pos ? number : -number;
/* handle invalid bufsize */
if (bufsize < 2) {
@@ -217,21 +218,16 @@ lwip_itoa(char *result, size_t bufsize, int number)
/* create the string in a temporary buffer since we don't know how long
it will get */
tmp = &result[bufsize - 2];
if (n == 0) {
*tmp = '0';
tmp--;
result_len++;
}
while ((n != 0) && (result_len < (bufsize - 1))) {
do {
char val = (char)('0' + (n % 10));
*tmp = val;
tmp--;
n = n / 10;
result_len++;
}
} while ((n != 0) && (result_len <= bufsize));
/* output sign first */
if (number < 0) {
if (!pos) {
*res = '-';
res++;
res_left--;