From dc1b29508d765b874372f4b1737ac6dc86962506 Mon Sep 17 00:00:00 2001 From: Jonathan Wakely Date: Thu, 20 May 2021 18:04:16 +0100 Subject: [PATCH] libstdc++: Fix narrowing conversion in std::visit Signed-off-by: Jonathan Wakely libstdc++-v3/ChangeLog: * include/std/variant (__do_visit): Use variant_npos instead of literal -1 that requires a narrowing conversion. --- libstdc++-v3/include/std/variant | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libstdc++-v3/include/std/variant b/libstdc++-v3/include/std/variant index ddeefd9..d50c6b7 100644 --- a/libstdc++-v3/include/std/variant +++ b/libstdc++-v3/include/std/variant @@ -1830,7 +1830,8 @@ namespace __variant if constexpr (is_same_v<_Result_type, __variant_idx_cookie> || is_same_v<_Result_type, __variant_cookie>) { - return __gen_vtable_impl<_Ma, index_sequence<-1>>:: + using _Npos = index_sequence; + return __gen_vtable_impl<_Ma, _Npos>:: __visit_invoke(std::forward<_Visitor>(__visitor), std::forward<_V0>(__v0)); } -- 2.7.4