https://gcc.gnu.org/g:c7ba34d7014f19adfbe3e64de13d09873b3fc97a
commit r16-5337-gc7ba34d7014f19adfbe3e64de13d09873b3fc97a Author: Jakub Jelinek <[email protected]> Date: Mon Nov 17 15:25:39 2025 +0100 c++: Add testcase for CWG3045 We already implement expansion statements that way, the following patch just adds a testcase for it. 2025-11-17 Jakub Jelinek <[email protected]> * g++.dg/DRs/dr3045.C: New test. Diff: --- gcc/testsuite/g++.dg/DRs/dr3045.C | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/gcc/testsuite/g++.dg/DRs/dr3045.C b/gcc/testsuite/g++.dg/DRs/dr3045.C new file mode 100644 index 000000000000..deeb22ca79cf --- /dev/null +++ b/gcc/testsuite/g++.dg/DRs/dr3045.C @@ -0,0 +1,16 @@ +// DR 3045 - Regularizing environment interactions of expansion statement +// { dg-do compile { target c++11 } } +// { dg-options "" } + +void +foo () +{ + static constexpr int arr[] = { 1, 2, 3 }; + for (auto g : arr) { // { dg-message "'int g' previously declared here" } + int g = 42; // { dg-error "redeclaration of 'int g'" } + } + template for (auto x : arr) { // { dg-warning "'template for' only available with" "" { target c++23_down } } + // { dg-message "'int x' previously declared here" "" { target *-*-* } .-1 } + int x = 42; // { dg-error "redeclaration of 'int x'" } + } +}
