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Support for importing const-qualified types from C++. (#5794)

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Incidentally also supports import of pointers-to-pointers.

Imported const-qualified types aren't especially useful just yet,
because on the Carbon side we don't yet permit conversions from
non-const to const types, so most of the tests still fail, but for
different reasons now.
This commit is contained in:
Richard Smith
2025-07-12 02:22:24 +00:00
committed by GitHub
parent 27be0973e7
commit a6acba9eab
7 changed files with 215 additions and 118 deletions
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toolchain/check/testdata/interop/cpp/function/union.carbon
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@@ -381,7 +381,7 @@ import Cpp library "decl_pointer_return_type.h";
fn F() {
//@dump-sem-ir-begin
// CHECK:STDERR: fail_todo_import_decl_pointer_return_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: nullable pointer: U *` [SemanticsTodo]
// CHECK:STDERR: fail_todo_import_decl_pointer_return_type.carbon:[[@LINE+7]]:3: error: semantics TODO: `Unsupported: Record declarations without a definition` [SemanticsTodo]
// CHECK:STDERR: Cpp.foo();
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR: fail_todo_import_decl_pointer_return_type.carbon:[[@LINE+4]]:3: note: in `Cpp` name lookup for `foo` [InCppNameLookup]