1 files changed, 85 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128ibm/tst-strtold-ldbl-128ibm.c b/sysdeps/ieee754/ldbl-128ibm/tst-strtold-ldbl-128ibm.c
new file mode 100644
index 0000000000..14dc683619
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/tst-strtold-ldbl-128ibm.c
@@ -0,0 +1,85 @@
+/* Test for ldbl-128ibm strtold overflow to infinity (bug 14551).
+   Copyright (C) 2015-2016 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 <errno.h>
+#include <fenv.h>
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static int
+test_strtold_value (const char *s, double exp_hi, double exp_lo, int exp_exc,
+		    int exp_errno)
+{
+  int result = 0;
+  union { long double ld; double d[2]; } x;
+  feclearexcept (FE_ALL_EXCEPT);
+  errno = 0;
+  x.ld = strtold (s, NULL);
+  int exc = fetestexcept (FE_ALL_EXCEPT);
+  int new_errno = errno;
+  printf ("strtold (\"%s\") returned (%a, %a), exceptions 0x%x, errno %d\n",
+	  s, x.d[0], x.d[1], exc, new_errno);
+  if (x.d[0] == exp_hi)
+    printf ("PASS: strtold (\"%s\") high == %a\n", s, exp_hi);
+  else
+    {
+      printf ("FAIL: strtold (\"%s\") high == %a\n", s, exp_hi);
+      result = 1;
+    }
+  if (x.d[1] == exp_lo)
+    printf ("PASS: strtold (\"%s\") low == %a\n", s, exp_lo);
+  else
+    {
+      printf ("FAIL: strtold (\"%s\") low == %a\n", s, exp_lo);
+      result = 1;
+    }
+  if (exc == exp_exc)
+    printf ("PASS: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc);
+  else
+    {
+      printf ("FAIL: strtold (\"%s\") exceptions 0x%x\n", s, exp_exc);
+      result = 1;
+    }
+  if (new_errno == exp_errno)
+    printf ("PASS: strtold (\"%s\") errno %d\n", s, exp_errno);
+  else
+    {
+      printf ("FAIL: strtold (\"%s\") errno %d\n", s, exp_errno);
+      result = 1;
+    }
+  return result;
+}
+
+static int
+do_test (void)
+{
+  int result = 0;
+  result |= test_strtold_value ("0x1.fffffffffffff8p+1023", INFINITY, 0,
+				FE_OVERFLOW | FE_INEXACT, ERANGE);
+  result |= test_strtold_value ("-0x1.fffffffffffff8p+1023", -INFINITY, 0,
+				FE_OVERFLOW | FE_INEXACT, ERANGE);
+  result |= test_strtold_value ("0x1.ffffffffffffffp+1023", INFINITY, 0,
+				FE_OVERFLOW | FE_INEXACT, ERANGE);
+  result |= test_strtold_value ("-0x1.ffffffffffffffp+1023", -INFINITY, 0,
+				FE_OVERFLOW | FE_INEXACT, ERANGE);
+  return result;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../../../test-skeleton.c"