Fix asan error (#977)

fmtlib · Dec 12, 2018 · de71db6 · de71db6
1 parent b180b39
commit de71db6
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/include/fmt/format.h b/include/fmt/format.h
@@ -1952,8 +1952,8 @@ FMT_CONSTEXPR const Char *parse_arg_id(
     return handler.on_error("invalid format string"), begin;
   auto it = begin;
   do {
-    c = *++it;
-  } while (it != end && (is_name_start(c) || ('0' <= c && c <= '9')));
+    ++it;
+  } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9')));
   handler(basic_string_view<Char>(begin, to_unsigned(it - begin)));
   return it;
 }