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-rw-r--r--src/core/ngx_string.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/core/ngx_string.c b/src/core/ngx_string.c
index 04980f8c3..468e9600c 100644
--- a/src/core/ngx_string.c
+++ b/src/core/ngx_string.c
@@ -1381,7 +1381,7 @@ ngx_utf8_length(u_char *p, size_t n)
continue;
}
- if (ngx_utf8_decode(&p, n) > 0x10ffff) {
+ if (ngx_utf8_decode(&p, last - p) > 0x10ffff) {
/* invalid UTF-8 */
return n;
}