| //===- unittests/Interpreter/InterpreterExceptionTest.cpp -----------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Unit tests for Clang's Interpreter library. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Interpreter/Interpreter.h" |
| |
| #include "clang/AST/ASTContext.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/DeclGroup.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "clang/Basic/Version.h" |
| #include "clang/Config/config.h" |
| #include "clang/Frontend/CompilerInstance.h" |
| #include "clang/Frontend/TextDiagnosticPrinter.h" |
| |
| #include "llvm/ADT/ArrayRef.h" |
| #include "llvm/ExecutionEngine/Orc/LLJIT.h" |
| #include "llvm/Support/ManagedStatic.h" |
| #include "llvm/Support/TargetSelect.h" |
| #include "llvm-c/Error.h" |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| |
| using namespace clang; |
| |
| namespace { |
| using Args = std::vector<const char *>; |
| static std::unique_ptr<Interpreter> |
| createInterpreter(const Args &ExtraArgs = {}, |
| DiagnosticConsumer *Client = nullptr) { |
| Args ClangArgs = {"-Xclang", "-emit-llvm-only"}; |
| ClangArgs.insert(ClangArgs.end(), ExtraArgs.begin(), ExtraArgs.end()); |
| auto CI = cantFail(clang::IncrementalCompilerBuilder::create(ClangArgs)); |
| if (Client) |
| CI->getDiagnostics().setClient(Client, /*ShouldOwnClient=*/false); |
| return cantFail(clang::Interpreter::create(std::move(CI))); |
| } |
| |
| TEST(InterpreterTest, CatchException) { |
| llvm::InitializeNativeTarget(); |
| llvm::InitializeNativeTargetAsmPrinter(); |
| |
| { |
| auto J = llvm::orc::LLJITBuilder().create(); |
| if (!J) { |
| // The platform does not support JITs. |
| // Using llvm::consumeError will require typeinfo for ErrorInfoBase, we |
| // can avoid that by going via the C interface. |
| LLVMConsumeError(llvm::wrap(J.takeError())); |
| return; |
| } |
| } |
| |
| #define Stringify(s) Stringifyx(s) |
| #define Stringifyx(s) #s |
| |
| // We define a custom exception to avoid #include-ing the <exception> header |
| // which would require this test to know about the libstdc++ location. |
| // its own header file. |
| #define CUSTOM_EXCEPTION \ |
| struct custom_exception { \ |
| custom_exception(const char *Msg) : Message(Msg) {} \ |
| const char *Message; \ |
| }; |
| |
| CUSTOM_EXCEPTION; |
| |
| std::string ExceptionCode = Stringify(CUSTOM_EXCEPTION); |
| ExceptionCode += |
| R"( |
| extern "C" int printf(const char*, ...); |
| static void ThrowerAnError(const char* Name) { |
| throw custom_exception(Name); |
| } |
| |
| extern "C" int throw_exception() { |
| try { |
| ThrowerAnError("To be caught in JIT"); |
| } catch (const custom_exception& E) { |
| printf("Caught: '%s'\n", E.Message); |
| } catch (...) { |
| printf("Unknown exception\n"); |
| } |
| ThrowerAnError("To be caught in binary"); |
| return 0; |
| } |
| )"; |
| std::unique_ptr<Interpreter> Interp = createInterpreter(); |
| // FIXME: Re-enable the excluded target triples. |
| const clang::CompilerInstance *CI = Interp->getCompilerInstance(); |
| const llvm::Triple &Triple = CI->getASTContext().getTargetInfo().getTriple(); |
| // FIXME: PPC fails due to `Symbols not found: [DW.ref.__gxx_personality_v0]` |
| // The current understanding is that the JIT should emit this symbol if it was |
| // not (eg. the way passing clang -fPIC does it). |
| if (Triple.isPPC()) |
| return; |
| |
| // FIXME: ARM fails due to `Not implemented relocation type!` |
| if (Triple.isARM()) |
| return; |
| |
| // FIXME: libunwind on darwin is broken, see PR49692. |
| if (Triple.isOSDarwin() && (Triple.getArch() == llvm::Triple::aarch64 || |
| Triple.getArch() == llvm::Triple::aarch64_32)) |
| return; |
| |
| // Check if platform does not support exceptions. |
| { |
| // Force the creation of an incremental executor to call getSymbolAddress. |
| llvm::cantFail(Interp->ParseAndExecute("")); |
| auto Sym = Interp->getSymbolAddress("__cxa_throw"); |
| if (!Sym) { |
| LLVMConsumeError(llvm::wrap(Sym.takeError())); |
| return; |
| } |
| } |
| |
| llvm::cantFail(Interp->ParseAndExecute(ExceptionCode)); |
| testing::internal::CaptureStdout(); |
| auto ThrowException = |
| (int (*)())llvm::cantFail(Interp->getSymbolAddress("throw_exception")); |
| EXPECT_ANY_THROW(ThrowException()); |
| std::string CapturedStdOut = testing::internal::GetCapturedStdout(); |
| EXPECT_EQ(CapturedStdOut, "Caught: 'To be caught in JIT'\n"); |
| |
| llvm::llvm_shutdown(); |
| } |
| |
| } // end anonymous namespace |