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117 lines
3.1 KiB
C
117 lines
3.1 KiB
C
/* Test for the long double conversions in *warn* functions.
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Copyright (C) 2018-2019 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <err.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <support/check.h>
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#include <support/xmemstream.h>
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enum {WARN, WARNX, VWARN, VWARNX};
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static void
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do_one_test (int select, const char *format, va_list args,
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long double arg1, double arg2, long double arg3,
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double arg4, const char *expected)
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{
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/* Prepare in-memory buffer to hold the output. */
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struct xmemstream stream;
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xopen_memstream (&stream);
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FILE *old_stderr = stderr;
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stderr = stream.out;
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/* Write to the buffer using one of the *warn* functions. */
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errno = 0;
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switch (select)
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{
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case WARN:
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warn (format, arg1, arg2, arg3, arg4);
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break;
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case WARNX:
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warnx (format, arg1, arg2, arg3, arg4);
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break;
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case VWARN:
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vwarn (format, args);
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break;
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case VWARNX:
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vwarnx (format, args);
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break;
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}
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stderr = old_stderr;
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/* Close the in-memory stream and check the output buffer. */
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xfclose_memstream (&stream);
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TEST_COMPARE_STRING (stream.buffer, expected);
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if (stream.buffer != NULL)
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free (stream.buffer);
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}
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static void
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do_test_call_varg (const char *format, ...)
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{
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va_list args;
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va_start (args, format);
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do_one_test (VWARN, format, args, 0, 0, 0, 0,
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"tst-ldbl-warn: "
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"-1.000000 - -2.000000 - -3.000000 - -4.000000: Success\n");
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va_end (args);
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va_start (args, format);
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do_one_test (VWARNX, format, args, 0, 0, 0, 0,
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"tst-ldbl-warn: "
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"-1.000000 - -2.000000 - -3.000000 - -4.000000\n");
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va_end (args);
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}
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static void
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do_test_call_rarg (const char *format, long double arg1, double arg2,
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long double arg3, double arg4)
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{
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va_list args;
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memset (&args, 0, sizeof (args));
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do_one_test (WARN, format, args, arg1, arg2, arg3, arg4,
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"tst-ldbl-warn: "
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"-1.000000 - -2.000000 - -3.000000 - -4.000000: Success\n");
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do_one_test (WARNX, format, args, arg1, arg2, arg3, arg4,
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"tst-ldbl-warn: "
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"-1.000000 - -2.000000 - -3.000000 - -4.000000\n");
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}
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static int
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do_test (void)
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{
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long double arg1 = -1;
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long double arg3 = -3;
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double arg2 = -2;
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double arg4 = -4;
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do_test_call_rarg ("%Lf - %f - %Lf - %f", arg1, arg2, arg3, arg4);
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do_test_call_varg ("%Lf - %f - %Lf - %f", arg1, arg2, arg3, arg4);
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return 0;
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}
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#include <support/test-driver.c>
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