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/* Test of ulc_[v]asnprintf() functions.
Copyright (C) 2007, 2009-2024 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
static void
test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
{
char buf[8];
int size;
/* Test return value convention. */
for (size = 0; size <= 8; size++)
{
size_t length = size;
char *result = my_asnprintf (NULL, &length, "%d", 12345);
ASSERT (result != NULL);
ASSERT (strcmp (result, "12345") == 0);
ASSERT (length == 5);
free (result);
}
for (size = 0; size <= 8; size++)
{
size_t length;
char *result;
memcpy (buf, "DEADBEEF", 8);
length = size;
result = my_asnprintf (buf, &length, "%d", 12345);
ASSERT (result != NULL);
ASSERT (strcmp (result, "12345") == 0);
ASSERT (length == 5);
if (size < 6)
ASSERT (result != buf);
ASSERT (memcmp (buf + size, &"DEADBEEF"[size], 8 - size) == 0);
if (result != buf)
free (result);
}
/* Verify that ulc_[v]asnprintf() rejects a width > 2 GiB, < 4 GiB. */
{
size_t length;
char *s = my_asnprintf (NULL, &length, "x%03000000000dy\n", -17);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
{
static const uint8_t arg[] = { '@', 0 };
size_t length;
char *s = my_asnprintf (NULL, &length, "x%03000000000Uy\n", arg);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
/* Verify that ulc_[v]asnprintf() rejects a width > 4 GiB. */
{
size_t length;
char *s =
my_asnprintf (NULL, &length,
"x%04294967306dy\n", /* 2^32 + 10 */
-17);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
{
static const uint8_t arg[] = { '@', 0 };
size_t length;
char *s =
my_asnprintf (NULL, &length,
"x%04294967306Uy\n", /* 2^32 + 10 */
arg);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
{
size_t length;
char *s =
my_asnprintf (NULL, &length,
"x%018446744073709551626dy\n", /* 2^64 + 10 */
-17);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
{
static const uint8_t arg[] = { '@', 0 };
size_t length;
char *s =
my_asnprintf (NULL, &length,
"x%018446744073709551626Uy\n", /* 2^64 + 10 */
arg);
ASSERT (s == NULL);
ASSERT (errno == EOVERFLOW);
}
}
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