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/* Test for the long double conversions in *warn* functions.
Copyright (C) 2018-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <err.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <support/check.h>
#include <support/xmemstream.h>
enum {WARN, WARNX, VWARN, VWARNX};
static void
do_one_test (int select, const char *format, va_list args,
long double arg1, double arg2, long double arg3,
double arg4, const char *expected)
{
/* Prepare in-memory buffer to hold the output. */
struct xmemstream stream;
xopen_memstream (&stream);
FILE *old_stderr = stderr;
stderr = stream.out;
/* Write to the buffer using one of the *warn* functions. */
errno = 0;
switch (select)
{
case WARN:
warn (format, arg1, arg2, arg3, arg4);
break;
case WARNX:
warnx (format, arg1, arg2, arg3, arg4);
break;
case VWARN:
vwarn (format, args);
break;
case VWARNX:
vwarnx (format, args);
break;
}
stderr = old_stderr;
/* Close the in-memory stream. */
xfclose_memstream (&stream);
/* Filter out the name of the program (which should always end with
warn), so that the test case can be reused by ldbl-opt and
ldbl-128ibm-compat. */
const char *needle = "warn: ";
char *message;
message = strstr (stream.buffer, needle);
if (message == NULL)
FAIL_EXIT1 ("test case error");
message += strlen (needle);
/* Check that the rest of the output is as expected. */
TEST_COMPARE_STRING (message, expected);
if (stream.buffer != NULL)
free (stream.buffer);
}
static void
do_test_call_varg (const char *format, ...)
{
va_list args;
va_start (args, format);
do_one_test (VWARN, format, args, 0, 0, 0, 0,
"-1.000000 - -2.000000 - -3.000000 - -4.000000: Success\n");
va_end (args);
va_start (args, format);
do_one_test (VWARNX, format, args, 0, 0, 0, 0,
"-1.000000 - -2.000000 - -3.000000 - -4.000000\n");
va_end (args);
}
static void
do_test_call_rarg (const char *format, long double arg1, double arg2,
long double arg3, double arg4)
{
va_list args;
memset (&args, 0, sizeof (args));
do_one_test (WARN, format, args, arg1, arg2, arg3, arg4,
"-1.000000 - -2.000000 - -3.000000 - -4.000000: Success\n");
do_one_test (WARNX, format, args, arg1, arg2, arg3, arg4,
"-1.000000 - -2.000000 - -3.000000 - -4.000000\n");
}
static int
do_test (void)
{
long double arg1 = -1;
long double arg3 = -3;
double arg2 = -2;
double arg4 = -4;
do_test_call_rarg ("%Lf - %f - %Lf - %f", arg1, arg2, arg3, arg4);
do_test_call_varg ("%Lf - %f - %Lf - %f", arg1, arg2, arg3, arg4);
return 0;
}
#include <support/test-driver.c>
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