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-rw-r--r--ext/mbstring/mbstring.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/mbstring/mbstring.c b/ext/mbstring/mbstring.c
index ba30e05c27..0f466a02ee 100644
--- a/ext/mbstring/mbstring.c
+++ b/ext/mbstring/mbstring.c
@@ -2038,7 +2038,7 @@ PHP_FUNCTION(mb_detect_order)
static inline int php_mb_check_code_point(zend_long cp)
{
- if (cp < 0 || cp >= 0x110000) {
+ if (cp <= 0 || cp >= 0x110000) {
/* Out of Unicode range */
return 0;
}