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-rw-r--r--modules/user/user.module3
1 files changed, 2 insertions, 1 deletions
diff --git a/modules/user/user.module b/modules/user/user.module
index 0e3fe1056..5ad4c26f0 100644
--- a/modules/user/user.module
+++ b/modules/user/user.module
@@ -248,7 +248,8 @@ function user_validate_name($name) {
'\x{205F}-\x{206F}'. // Various text hinting characters
'\x{FEFF}'. // Byte order mark
'\x{FF01}-\x{FF60}'. // Full-width latin
- '\x{FFF9}-\x{FFFD}]/u', // Replacement characters
+ '\x{FFF9}-\x{FFFD}'. // Replacement characters
+ '\x{0}]/u', // NULL byte
$name)) {
return t('The username contains an illegal character.');
}