Check chrono spec starts with %

2022-12-21 14:40:30 -08:00
parent 115001a3b1
commit 8c56919bd2
2 changed files with 6 additions and 0 deletions
@@ -626,6 +626,8 @@ template <typename Char, typename Handler>
 FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin,
                                              const Char* end,
                                              Handler&& handler) {
+  if (begin == end || *begin == '}') return begin;
+  if (*begin != '%') FMT_THROW(format_error("invalid format"));
  auto ptr = begin;
  while (ptr != end) {
    auto c = *ptr;