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authorThomas Schwinge <thomas@codesourcery.com>2013-05-23 18:00:10 +0200
committerThomas Schwinge <thomas@codesourcery.com>2013-08-29 12:22:10 +0200
commit0007fc9bdd1d9efcd52d07837f2cd085b5a8f58b (patch)
treeb3c86dbee5b95c24a8413be634ae11318ceb2f8e /stdlib/tst-strtod6.c
parentf1cc4c8654b6bc431273286d3562942c50975caf (diff)
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[BZ #15522] strtod ("nan(N)") returning a sNaN in some cases
Diffstat (limited to 'stdlib/tst-strtod6.c')
-rw-r--r--stdlib/tst-strtod6.c24
1 files changed, 22 insertions, 2 deletions
diff --git a/stdlib/tst-strtod6.c b/stdlib/tst-strtod6.c
index 1d87266a27..15e79fddfb 100644
--- a/stdlib/tst-strtod6.c
+++ b/stdlib/tst-strtod6.c
@@ -4,12 +4,13 @@
 #include <string.h>
 
 static int
-do_test (void)
+test (const char str[])
 {
-  static const char str[] = "NaN(blabla)something";
   char *endp;
   int result = 0;
 
+  puts (str);
+
   double d = strtod (str, &endp);
   if (!isnan (d))
     {
@@ -64,5 +65,24 @@ do_test (void)
   return result;
 }
 
+static int
+do_test (void)
+{
+  int result = 0;
+
+  result |= test ("NaN(blabla)something");
+  result |= test ("NaN(1234)something");
+  /* UINT32_MAX.  */
+  result |= test ("NaN(4294967295)something");
+  /* UINT64_MAX.  */
+  result |= test ("NaN(18446744073709551615)something");
+  /* The case of zero is special in that "something" has to be done to make the
+     mantissa different from zero, which would mean infinity instead of
+     NaN.  */
+  result |= test ("NaN(0)something");
+
+  return result;
+}
+
 #define TEST_FUNCTION do_test ()
 #include "../test-skeleton.c"