X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=tests%2Ftest-vasnprintf-posix.c;h=791d6c72c59c8b09d6f88207de11d9a6d0edae92;hb=b0d9d3aa695aebab5ebc0fb02ebeac9e59f57242;hp=47af6e037dc4522115ba3fb5ddf09ed935071f8a;hpb=6fb8ffda3e174cd01655f87065f8ade6f536014d;p=gnulib.git

diff --git a/tests/test-vasnprintf-posix.c b/tests/test-vasnprintf-posix.c
index 47af6e037..791d6c72c 100644
--- a/tests/test-vasnprintf-posix.c
+++ b/tests/test-vasnprintf-posix.c
@@ -24,6 +24,7 @@
 #include "vasnprintf.h"
 
 #include <stdarg.h>
+#include <stddef.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
@@ -267,6 +268,20 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     free (result);
   }
 
+  { /* Rounding can turn a ...FFF into a ...000.
+       This shows a MacOS X 10.3.9 (Darwin 7.9) bug.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.1a %d", 1.999, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.0p+1 33") == 0
+	    || strcmp (result, "0x2.0p+0 33") == 0
+	    || strcmp (result, "0x4.0p-1 33") == 0
+	    || strcmp (result, "0x8.0p-2 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
   { /* Width.  */
     size_t length;
     char *result =
@@ -560,6 +575,21 @@ test_function (char * (*my_asnprintf) (char *, size_t *, const char *, ...))
     free (result);
   }
 
+  { /* Rounding can turn a ...FFF into a ...000.
+       This shows a MacOS X 10.3.9 (Darwin 7.9) bug and a
+       glibc 2.4 bug <http://sourceware.org/bugzilla/show_bug.cgi?id=2908>.  */
+    size_t length;
+    char *result =
+      my_asnprintf (NULL, &length, "%.1La %d", 1.999L, 33, 44, 55);
+    ASSERT (result != NULL);
+    ASSERT (strcmp (result, "0x1.0p+1 33") == 0
+	    || strcmp (result, "0x2.0p+0 33") == 0
+	    || strcmp (result, "0x4.0p-1 33") == 0
+	    || strcmp (result, "0x8.0p-2 33") == 0);
+    ASSERT (length == strlen (result));
+    free (result);
+  }
+
   { /* Width.  */
     size_t length;
     char *result =