--- /dev/null
+/* Test nan functions stack overflow (bug 16962).
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/resource.h>
+
+#define STACK_LIM 1048576
+#define STRING_SIZE (2 * STACK_LIM)
+
+static int
+do_test (void)
+{
+ int result = 0;
+ struct rlimit lim;
+ getrlimit (RLIMIT_STACK, &lim);
+ lim.rlim_cur = STACK_LIM;
+ setrlimit (RLIMIT_STACK, &lim);
+ char *nanstr = malloc (STRING_SIZE);
+ if (nanstr == NULL)
+ {
+ puts ("malloc failed, cannot test");
+ return 77;
+ }
+ memset (nanstr, '0', STRING_SIZE - 1);
+ nanstr[STRING_SIZE - 1] = 0;
+#define NAN_TEST(TYPE, FUNC) \
+ do \
+ { \
+ char *volatile p = nanstr; \
+ volatile TYPE v = FUNC (p); \
+ if (isnan (v)) \
+ puts ("PASS: " #FUNC); \
+ else \
+ { \
+ puts ("FAIL: " #FUNC); \
+ result = 1; \
+ } \
+ } \
+ while (0)
+ NAN_TEST (float, nanf);
+ NAN_TEST (double, nan);
+#ifndef NO_LONG_DOUBLE
+ NAN_TEST (long double, nanl);
+#endif
+ return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
--- /dev/null
+/* Test nan functions payload handling (bug 16961).
+ Copyright (C) 2015 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
+ <http://www.gnu.org/licenses/>. */
+
+#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)) \
+ puts ("PASS: " #TYPE " " #A); \
+ else \
+ { \
+ puts ("FAIL: " #TYPE " " #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)
+
+/* 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, MANT_DIG) \
+ do \
+ { \
+ TYPE n123 = WRAP_NAN (FUNC, "123"); \
+ CHECK_IS_NAN (TYPE, n123); \
+ TYPE s123 = WRAP_STRTO (SFUNC, "NAN(123)"); \
+ CHECK_IS_NAN (TYPE, s123); \
+ TYPE n456 = WRAP_NAN (FUNC, "456"); \
+ CHECK_IS_NAN (TYPE, n456); \
+ TYPE s456 = WRAP_STRTO (SFUNC, "NAN(456)"); \
+ CHECK_IS_NAN (TYPE, s456); \
+ TYPE n123x = WRAP_NAN (FUNC, "123)"); \
+ CHECK_IS_NAN (TYPE, n123x); \
+ TYPE nemp = WRAP_NAN (FUNC, ""); \
+ CHECK_IS_NAN (TYPE, nemp); \
+ TYPE semp = WRAP_STRTO (SFUNC, "NAN()"); \
+ CHECK_IS_NAN (TYPE, semp); \
+ TYPE sx = WRAP_STRTO (SFUNC, "NAN"); \
+ CHECK_IS_NAN (TYPE, sx); \
+ if (CAN_TEST_EQ (MANT_DIG)) \
+ CHECK_SAME_NAN (TYPE, n123, s123); \
+ if (CAN_TEST_EQ (MANT_DIG)) \
+ CHECK_SAME_NAN (TYPE, n456, s456); \
+ 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, FLT_MANT_DIG);
+ RUN_TESTS (double, strtod, nan, DBL_MANT_DIG);
+#ifndef NO_LONG_DOUBLE
+ RUN_TESTS (long double, strtold, nanl, LDBL_MANT_DIG);
+#endif
+ return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
projects / thirdparty / glibc.git / commitdiff
