diff options
Diffstat (limited to 'libcxx/include/__format/format_functions.h')
| -rw-r--r-- | libcxx/include/__format/format_functions.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libcxx/include/__format/format_functions.h b/libcxx/include/__format/format_functions.h index 185148ccba53..0f0001272d40 100644 --- a/libcxx/include/__format/format_functions.h +++ b/libcxx/include/__format/format_functions.h @@ -258,10 +258,12 @@ __handle_replacement_field(const _CharT* __begin, const _CharT* __end, if constexpr (same_as<_Ctx, __compile_time_basic_format_context<_CharT>>) { __arg_t __type = __ctx.arg(__r.__value); - if (__type == __arg_t::__handle) + if (__type == __arg_t::__none) + std::__throw_format_error("Argument index out of bounds"); + else if (__type == __arg_t::__handle) __ctx.__handle(__r.__value).__parse(__parse_ctx); - else - __format::__compile_time_visit_format_arg(__parse_ctx, __ctx, __type); + else if (__parse) + __format::__compile_time_visit_format_arg(__parse_ctx, __ctx, __type); } else _VSTD::__visit_format_arg( [&](auto __arg) { |