basic/utf8: do not read past end of string when looking for a multi-byte character

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=9341.
2019-02-26 12:37:40 +01:00
parent 84319aa76e
commit 92e068b465
8 changed files with 42 additions and 26 deletions
@@ -32,7 +32,7 @@ char16_t *utf8_to_utf16(const char *s, size_t length);

 size_t char16_strlen(const char16_t *s); /* returns the number of 16bit words in the string (not bytes!) */

-int utf8_encoded_valid_unichar(const char *str);
+int utf8_encoded_valid_unichar(const char *str, size_t length);
 int utf8_encoded_to_unichar(const char *str, char32_t *ret_unichar);

 static inline bool utf16_is_surrogate(char16_t c) {