diff options
Diffstat (limited to 'gcc/testsuite/g++.dg/cpp1z/decomp47.C')
-rw-r--r-- | gcc/testsuite/g++.dg/cpp1z/decomp47.C | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp1z/decomp47.C b/gcc/testsuite/g++.dg/cpp1z/decomp47.C new file mode 100644 index 00000000000..f0d202d696a --- /dev/null +++ b/gcc/testsuite/g++.dg/cpp1z/decomp47.C @@ -0,0 +1,32 @@ +// PR c++/87122 +// { dg-do run { target c++14 } } +// { dg-options "" } + +extern "C" void abort (); +struct S { int a, b; }; +int c; + +template <int N> +void +foo () +{ + S x[4] = { { N, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 } }; + auto f = [](auto & y) { + for (auto & [ u, v ] : y) // { dg-warning "structured bindings only available with" "" { target c++14_down } } + { + if ((u & 1) != 1 || v != u + 1 || u < N || u > 7 || (c & (1 << u)) + || &u != &y[v / 2 - 1].a || &v != &y[v / 2 - 1].b) + abort (); + c |= 1 << u; + } + }; + f (x); +} + +int +main () +{ + foo<1> (); + if (c != 0xaa) + abort (); +} |