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| author | Patrick Palka <ppalka@redhat.com> | 2021-01-18 16:41:46 -0500 |
|---|---|---|
| committer | Patrick Palka <ppalka@redhat.com> | 2021-01-18 16:41:46 -0500 |
| commit | 32b6e917ac4c6e6db1f84b02afd070055b70d1dc (patch) | |
| tree | c2270d4a7dfeba3e1fee03028d7af5ff67a22219 | |
| parent | 9675ccd64efe78bc4791436c34d57cd894640f39 (diff) | |
| download | gcc-32b6e917ac4c6e6db1f84b02afd070055b70d1dc.zip gcc-32b6e917ac4c6e6db1f84b02afd070055b70d1dc.tar.gz gcc-32b6e917ac4c6e6db1f84b02afd070055b70d1dc.tar.bz2 | |
c++: Add CTAD + pack expansion testcase
After r11-6614 made cp_walk_subtrees walk into the template of a CTAD
placeholder, we now correctly accept the below testcase. We used to
reject it because find_parameter_packs_r would fail to find the
parameter pack Ts inside the CTAD placeholder within the pack expansion.
gcc/testsuite/ChangeLog:
* g++.dg/cpp1z/class-deduction77.C: New test.
| -rw-r--r-- | gcc/testsuite/g++.dg/cpp1z/class-deduction77.C | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp1z/class-deduction77.C b/gcc/testsuite/g++.dg/cpp1z/class-deduction77.C new file mode 100644 index 0000000..c5462fb --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp1z/class-deduction77.C @@ -0,0 +1,6 @@ +// { dg-do compile { target c++17 } } + +template <class...> struct A {}; + +template <template <class> class... Ts> +using B = A<decltype(Ts{0})...>; |