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Add a failing test for user-defined literals in macros (#6431)

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These types of literals are not supported at the moment, adding a `todo`
test for it.

Part of #6303
This commit is contained in:
Ivana Ivanovska
2025-11-26 14:58:39 +00:00
committed by GitHub
parent a179bd461b
commit e7b71c031a
1 changed files with 35 additions and 0 deletions
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toolchain/check/testdata/interop/cpp/macros.carbon
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@@ -608,6 +608,41 @@ fn F() {
Cpp.foo(Cpp.MyNullPtr);
}
// --- user_defined_literal.h
constexpr auto operator""_kb(unsigned long long k) -> unsigned long long {
return k * 1024;
}
#define M_1KB 1_kb
// --- fail_todo_import_user_defined_literal.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_todo_import_user_defined_literal.carbon:[[@LINE+4]]:10: in file included here [InCppInclude]
// CHECK:STDERR: ./user_defined_literal.h:4:16: error: no matching literal operator for call to 'operator""_kb' with argument of type 'unsigned long long' or 'const char *', and no matching literal operator template [CppInteropParseError]
// CHECK:STDERR: 4 | #define M_1KB 1_kb
// CHECK:STDERR: | ^
import Cpp library "user_defined_literal.h";
fn F() {
// CHECK:STDERR: fail_todo_import_user_defined_literal.carbon:[[@LINE+15]]:2: note: in `Cpp` name lookup for `M_1KB` [InCppNameLookup]
// CHECK:STDERR: Cpp.M_1KB;
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_todo_import_user_defined_literal.carbon:[[@LINE+11]]:2: error: failed to parse macro Cpp.M_1KB to a valid constant expression [InCppMacroEvaluation]
// CHECK:STDERR: Cpp.M_1KB;
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR: fail_todo_import_user_defined_literal.carbon:[[@LINE+8]]:2: note: in `Cpp` name lookup for `M_1KB` [InCppNameLookup]
// CHECK:STDERR: Cpp.M_1KB;
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_todo_import_user_defined_literal.carbon:[[@LINE+4]]:2: error: member name `M_1KB` not found in `Cpp` [MemberNameNotFoundInInstScope]
// CHECK:STDERR: Cpp.M_1KB;
// CHECK:STDERR: ^~~~~~~~~
// CHECK:STDERR:
Cpp.M_1KB;
}
// --- enums.carbon
library "[[@TEST_NAME]]";