mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-19 16:10:01 +00:00
64f62c47e9
As reported in bug 32045, it's incorrect for strtod/nan functions to set errno based on overflowing payload (strtod should only set errno for overflow / underflow of its actual result, and potentially if nothing in the string can be parsed as a number at all; nan should be a pure function that never sets it). Save and restore errno around the internal strtoull call and add associated test coverage. Tested for x86_64.
223 lines
6.6 KiB
C
223 lines
6.6 KiB
C
/* Test nan functions payload handling (bug 16961).
|
|
Copyright (C) 2015-2024 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/>. */
|
|
|
|
#define _LIBC_TEST 1
|
|
#define __STDC_WANT_IEC_60559_TYPES_EXT__
|
|
#include <errno.h>
|
|
#include <float.h>
|
|
#include <math.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
/* Avoid built-in functions. */
|
|
#define WRAP_NAN(FUNC, STR) \
|
|
({ const char *volatile wns = (STR); FUNC (wns); })
|
|
#define WRAP_STRTO(FUNC, STR) \
|
|
({ const char *volatile wss = (STR); FUNC (wss, NULL); })
|
|
|
|
#define CHECK_IS_NAN(TYPE, A) \
|
|
do \
|
|
{ \
|
|
if (isnan (A) && !issignaling (A)) \
|
|
puts ("PASS: " #TYPE " " #A); \
|
|
else \
|
|
{ \
|
|
puts ("FAIL: " #TYPE " " #A); \
|
|
result = 1; \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
#define CHECK_PAYLOAD(TYPE, FUNC, A, P) \
|
|
do \
|
|
{ \
|
|
if (FUNC (&(A)) == (P)) \
|
|
puts ("PASS: " #TYPE " payload " #A); \
|
|
else \
|
|
{ \
|
|
puts ("FAIL: " #TYPE " payload " #A); \
|
|
result = 1; \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
#define CHECK_SAME_NAN(TYPE, A, B) \
|
|
do \
|
|
{ \
|
|
if (memcmp (&(A), &(B), sizeof (A)) == 0) \
|
|
puts ("PASS: " #TYPE " " #A " = " #B); \
|
|
else \
|
|
{ \
|
|
puts ("FAIL: " #TYPE " " #A " = " #B); \
|
|
result = 1; \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
#define CHECK_DIFF_NAN(TYPE, A, B) \
|
|
do \
|
|
{ \
|
|
if (memcmp (&(A), &(B), sizeof (A)) != 0) \
|
|
puts ("PASS: " #TYPE " " #A " != " #B); \
|
|
else \
|
|
{ \
|
|
puts ("FAIL: " #TYPE " " #A " != " #B); \
|
|
result = 1; \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
#define CLEAR_ERRNO \
|
|
do \
|
|
{ \
|
|
errno = 12345; \
|
|
} \
|
|
while (0)
|
|
|
|
#define CHECK_ERRNO(TYPE, A) \
|
|
do \
|
|
{ \
|
|
if (errno == 12345) \
|
|
puts ("PASS: " #TYPE " " #A " errno"); \
|
|
else \
|
|
{ \
|
|
puts ("FAIL: " #TYPE " " #A " errno"); \
|
|
result = 1; \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
/* Cannot test payloads by memcmp for formats where NaNs have padding
|
|
bits. */
|
|
#define CAN_TEST_EQ(MANT_DIG) ((MANT_DIG) != 64 && (MANT_DIG) != 106)
|
|
|
|
#define RUN_TESTS(TYPE, SFUNC, FUNC, PLFUNC, MANT_DIG) \
|
|
do \
|
|
{ \
|
|
CLEAR_ERRNO; \
|
|
TYPE n123 = WRAP_NAN (FUNC, "123"); \
|
|
CHECK_ERRNO (TYPE, n123); \
|
|
CHECK_IS_NAN (TYPE, n123); \
|
|
CLEAR_ERRNO; \
|
|
TYPE s123 = WRAP_STRTO (SFUNC, "NAN(123)"); \
|
|
CHECK_ERRNO (TYPE, s123); \
|
|
CHECK_IS_NAN (TYPE, s123); \
|
|
CLEAR_ERRNO; \
|
|
TYPE n456 = WRAP_NAN (FUNC, "456"); \
|
|
CHECK_ERRNO (TYPE, n456); \
|
|
CHECK_IS_NAN (TYPE, n456); \
|
|
CLEAR_ERRNO; \
|
|
TYPE s456 = WRAP_STRTO (SFUNC, "NAN(456)"); \
|
|
CHECK_ERRNO (TYPE, s456); \
|
|
CHECK_IS_NAN (TYPE, s456); \
|
|
CLEAR_ERRNO; \
|
|
TYPE nh123 = WRAP_NAN (FUNC, "0x123"); \
|
|
CHECK_ERRNO (TYPE, nh123); \
|
|
CHECK_IS_NAN (TYPE, nh123); \
|
|
CLEAR_ERRNO; \
|
|
TYPE sh123 = WRAP_STRTO (SFUNC, "NAN(0x123)"); \
|
|
CHECK_ERRNO (TYPE, sh123); \
|
|
CHECK_IS_NAN (TYPE, sh123); \
|
|
CLEAR_ERRNO; \
|
|
TYPE n123x = WRAP_NAN (FUNC, "123)"); \
|
|
CHECK_ERRNO (TYPE, n123x); \
|
|
CHECK_IS_NAN (TYPE, n123x); \
|
|
CLEAR_ERRNO; \
|
|
TYPE nemp = WRAP_NAN (FUNC, ""); \
|
|
CHECK_ERRNO (TYPE, nemp); \
|
|
CHECK_IS_NAN (TYPE, nemp); \
|
|
CLEAR_ERRNO; \
|
|
TYPE semp = WRAP_STRTO (SFUNC, "NAN()"); \
|
|
CHECK_ERRNO (TYPE, semp); \
|
|
CHECK_IS_NAN (TYPE, semp); \
|
|
CLEAR_ERRNO; \
|
|
TYPE sx = WRAP_STRTO (SFUNC, "NAN"); \
|
|
CHECK_ERRNO (TYPE, sx); \
|
|
CHECK_IS_NAN (TYPE, sx); \
|
|
CLEAR_ERRNO; \
|
|
TYPE novf = WRAP_NAN (FUNC, "9999999999" \
|
|
"99999999999999999999" \
|
|
"9999999999"); \
|
|
CHECK_ERRNO (TYPE, novf); \
|
|
CHECK_IS_NAN (TYPE, novf); \
|
|
CLEAR_ERRNO; \
|
|
TYPE sovf = WRAP_STRTO (SFUNC, "NAN(9999999999" \
|
|
"99999999999999999999" \
|
|
"9999999999)"); \
|
|
CHECK_ERRNO (TYPE, sovf); \
|
|
CHECK_IS_NAN (TYPE, sovf); \
|
|
if (CAN_TEST_EQ (MANT_DIG)) \
|
|
CHECK_SAME_NAN (TYPE, n123, s123); \
|
|
CHECK_PAYLOAD (TYPE, PLFUNC, n123, 123); \
|
|
CHECK_PAYLOAD (TYPE, PLFUNC, s123, 123); \
|
|
if (CAN_TEST_EQ (MANT_DIG)) \
|
|
CHECK_SAME_NAN (TYPE, n456, s456); \
|
|
CHECK_PAYLOAD (TYPE, PLFUNC, n456, 456); \
|
|
CHECK_PAYLOAD (TYPE, PLFUNC, s456, 456); \
|
|
if (CAN_TEST_EQ (MANT_DIG)) \
|
|
CHECK_SAME_NAN (TYPE, nh123, sh123); \
|
|
CHECK_PAYLOAD (TYPE, PLFUNC, nh123, 0x123); \
|
|
CHECK_PAYLOAD (TYPE, PLFUNC, sh123, 0x123); \
|
|
if (CAN_TEST_EQ (MANT_DIG)) \
|
|
CHECK_SAME_NAN (TYPE, nemp, semp); \
|
|
if (CAN_TEST_EQ (MANT_DIG)) \
|
|
CHECK_SAME_NAN (TYPE, n123x, sx); \
|
|
CHECK_DIFF_NAN (TYPE, n123, n456); \
|
|
CHECK_DIFF_NAN (TYPE, n123, nemp); \
|
|
CHECK_DIFF_NAN (TYPE, n123, n123x); \
|
|
CHECK_DIFF_NAN (TYPE, n456, nemp); \
|
|
CHECK_DIFF_NAN (TYPE, n456, n123x); \
|
|
} \
|
|
while (0)
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
int result = 0;
|
|
RUN_TESTS (float, strtof, nanf, getpayloadf, FLT_MANT_DIG);
|
|
RUN_TESTS (double, strtod, nan, getpayload, DBL_MANT_DIG);
|
|
RUN_TESTS (long double, strtold, nanl, getpayloadl, LDBL_MANT_DIG);
|
|
#if __HAVE_FLOAT16
|
|
RUN_TESTS (_Float16, strtof16, nanf16, getpayloadf16, FLT16_MANT_DIG);
|
|
#endif
|
|
#if __HAVE_FLOAT32
|
|
RUN_TESTS (_Float32, strtof32, nanf32, getpayloadf32, FLT32_MANT_DIG);
|
|
#endif
|
|
#if __HAVE_FLOAT64
|
|
RUN_TESTS (_Float64, strtof64, nanf64, getpayloadf64, FLT64_MANT_DIG);
|
|
#endif
|
|
#if __HAVE_FLOAT128
|
|
RUN_TESTS (_Float128, strtof128, nanf128, getpayloadf128, FLT128_MANT_DIG);
|
|
#endif
|
|
#if __HAVE_FLOAT32X
|
|
RUN_TESTS (_Float32x, strtof32x, nanf32x, getpayloadf32x, FLT32X_MANT_DIG);
|
|
#endif
|
|
#if __HAVE_FLOAT64X
|
|
RUN_TESTS (_Float64x, strtof64x, nanf64x, getpayloadf64x, FLT64X_MANT_DIG);
|
|
#endif
|
|
#if __HAVE_FLOAT128X
|
|
RUN_TESTS (_Float128x, strtof128x, nanf128x, getpayloadf128x,
|
|
FLT128X_MANT_DIG);
|
|
#endif
|
|
return result;
|
|
}
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|