Tested x86_64-pc-linux-gnu, applying to trunk. -- >8 -- This patch extends g++.dg/warn/Wdangling-reference17.C with code from PR109642. I'm not creating a new test because this one already #includes the required headers.
PR c++/109642 gcc/testsuite/ChangeLog: * g++.dg/warn/Wdangling-reference17.C: Additional testing. --- gcc/testsuite/g++.dg/warn/Wdangling-reference17.C | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/gcc/testsuite/g++.dg/warn/Wdangling-reference17.C b/gcc/testsuite/g++.dg/warn/Wdangling-reference17.C index 223698422c2..8cda5dea444 100644 --- a/gcc/testsuite/g++.dg/warn/Wdangling-reference17.C +++ b/gcc/testsuite/g++.dg/warn/Wdangling-reference17.C @@ -4,6 +4,7 @@ #include <vector> #include <ranges> +#include <span> int main() { @@ -12,4 +13,15 @@ int main() { (void) i; } + + // From c++/109642. + const auto vec = std::vector{ 1, 2, 3 }; + const auto s = std::span<decltype(vec)::value_type const>{vec}; + + for ([[maybe_unused]] auto _ : s | std::views::take(2)) { } + + for ([[maybe_unused]] auto _ : vec | std::views::take(2)) { } + + const auto s_view = s | std::views::take(2); + for ([[maybe_unused]] auto _ : s_view) { } } base-commit: bc77c035c45bb224790b1c03d06a64c8a1cc51c5 -- 2.43.0