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[clang] Add test for CWG190 "Layout-compatible POD-struct types" #121668

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Merged
merged 1 commit into from
Jan 5, 2025
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[clang] Add test for CWG190 "Layout-compatible POD-struct types" #121668

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21 changes: 19 additions & 2 deletions clang/test/CXX/drs/cwg1xx.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1314,8 +1314,25 @@ namespace cwg188 { // cwg188: yes
static_assert(sizeof(0, c) == 10, "");
}

// cwg190 FIXME: add codegen test for tbaa
// or implement C++20 std::is_layout_compatible and test it this way
namespace cwg190 { // cwg190: 19
struct A {
int a;
static double x;
int b;
void y();
int c;
};

struct B {
int a;
void y();
int b;
static double x;
int c;
};

static_assert(__is_layout_compatible(A, B), "");
} // namespace cwg190

int cwg191_j;
namespace cwg191 { // cwg191: yes
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2 changes: 1 addition & 1 deletion clang/www/cxx_dr_status.html
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Expand Up @@ -1185,7 +1185,7 @@ <h2 id="cxxdr">C++ defect report implementation status</h2>
<td><a href="https://cplusplus.github.io/CWG/issues/190.html">190</a></td>
<td>TC1</td>
<td>Layout-compatible POD-struct types</td>
<td class="unknown" align="center">Unknown</td>
<td class="full" align="center">Clang 19</td>
</tr>
<tr id="191">
<td><a href="https://cplusplus.github.io/CWG/issues/191.html">191</a></td>
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