Libc-1244.50.9.tar.gz

[apple/libc.git] / stdio / FreeBSD / vfprintf.c

diff --git a/stdio/FreeBSD/vfprintf.c b/stdio/FreeBSD/vfprintf.c
index 2e707ef2417134c0a51b9d902cf058dfb120c8e6..ff6162cfc50dc6bdb8dc4c0f8bec2da9fd9f490f 100644 (file)
--- a/stdio/FreeBSD/vfprintf.c
+++ b/stdio/FreeBSD/vfprintf.c
@@ -30,6 +30,8 @@
  * SUCH DAMAGE.
  */
 
+#define OS_CRASH_ENABLE_EXPERIMENTAL_LIBTRACE 1
+
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)vfprintf.c 8.1 (Berkeley) 6/4/93";
 #endif /* LIBC_SCCS and not lint */
@@ -868,7 +870,7 @@ fp_common:
                                static_format_checked = __printf_is_memory_read_only((void*)fmt0, strlen(fmt0));
                        }
                        if (!static_format_checked) {
-                               os_crash("%n used in a non-immutable format string");
+                               os_crash("%%n used in a non-immutable format string: %s", fmt0);
                        }
 #endif // ALLOW_DYNAMIC_PERCENT_N