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rand: fix 'alnum': array is too small to include a terminating null character

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It was that small on purpose, but this change now adds the null byte to
avoid the error.

Follow-up to 3aa3cc9b05

Reported-by: Dan Fandrich
Ref: #11838
Closes #11870
This commit is contained in:
Daniel Stenberg 2023-09-16 22:37:28 +02:00
parent adbb7a030d
commit 706eff9f1f
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GPG Key ID: 5CC908FDB71E12C2
1 changed files with 2 additions and 2 deletions
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4
lib/rand.c
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@ -275,14 +275,14 @@ CURLcode Curl_rand_hex(struct Curl_easy *data, unsigned char *rnd,
* alphanumerical chars PLUS a null-terminating byte.
*/
static const char alnum[26 + 26 + 10] =
static const char alnum[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
CURLcode Curl_rand_alnum(struct Curl_easy *data, unsigned char *rnd,
size_t num)
{
CURLcode result = CURLE_OK;
const int alnumspace = sizeof(alnum);
const int alnumspace = sizeof(alnum) - 1;
unsigned int r;
DEBUGASSERT(num > 1);