72ea1a721e
Fix "JIT session error: Symbols not found: [ DW.ref.__gxx_personality_v0 ] error" which happens when trying to use exceptions on ppc linux. To do this, it expands AutoClaimSymbols option in RTDyldObjectLinkingLayer to also claim weak symbols before they are tried to be resovled. In ppc linux, DW.ref symbols is emitted as weak hidden symbols in the later stage of MC pipeline. This means when using IRLayer (i.e. LLJIT), IRLayer will not claim responsibility for such symbols and RuntimeDyld will skip defining this symbol even though it couldn't resolve corresponding external symbol. Reviewed By: sgraenitz Differential Revision: https://reviews.llvm.org/D129175
134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
//===- unittests/Interpreter/InterpreterExceptionTest.cpp -----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Unit tests for Clang's Interpreter library.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/Interpreter/Interpreter.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/Decl.h"
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#include "clang/AST/DeclGroup.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Basic/Version.h"
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#include "clang/Config/config.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/TextDiagnosticPrinter.h"
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/ExecutionEngine/Orc/LLJIT.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm-c/Error.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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using namespace clang;
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namespace {
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using Args = std::vector<const char *>;
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static std::unique_ptr<Interpreter>
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createInterpreter(const Args &ExtraArgs = {},
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DiagnosticConsumer *Client = nullptr) {
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Args ClangArgs = {"-Xclang", "-emit-llvm-only"};
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ClangArgs.insert(ClangArgs.end(), ExtraArgs.begin(), ExtraArgs.end());
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auto CI = cantFail(clang::IncrementalCompilerBuilder::create(ClangArgs));
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if (Client)
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CI->getDiagnostics().setClient(Client, /*ShouldOwnClient=*/false);
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return cantFail(clang::Interpreter::create(std::move(CI)));
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}
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TEST(InterpreterTest, CatchException) {
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llvm::InitializeNativeTarget();
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llvm::InitializeNativeTargetAsmPrinter();
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{
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auto J = llvm::orc::LLJITBuilder().create();
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if (!J) {
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// The platform does not support JITs.
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// Using llvm::consumeError will require typeinfo for ErrorInfoBase, we
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// can avoid that by going via the C interface.
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LLVMConsumeError(llvm::wrap(J.takeError()));
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return;
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}
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}
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#define Stringify(s) Stringifyx(s)
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#define Stringifyx(s) #s
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// We define a custom exception to avoid #include-ing the <exception> header
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// which would require this test to know about the libstdc++ location.
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// its own header file.
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#define CUSTOM_EXCEPTION \
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struct custom_exception { \
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custom_exception(const char *Msg) : Message(Msg) {} \
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const char *Message; \
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};
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CUSTOM_EXCEPTION;
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std::string ExceptionCode = Stringify(CUSTOM_EXCEPTION);
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ExceptionCode +=
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R"(
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extern "C" int printf(const char*, ...);
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static void ThrowerAnError(const char* Name) {
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throw custom_exception(Name);
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}
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extern "C" int throw_exception() {
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try {
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ThrowerAnError("To be caught in JIT");
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} catch (const custom_exception& E) {
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printf("Caught: '%s'\n", E.Message);
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} catch (...) {
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printf("Unknown exception\n");
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}
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ThrowerAnError("To be caught in binary");
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return 0;
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}
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)";
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std::unique_ptr<Interpreter> Interp = createInterpreter();
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// FIXME: Re-enable the excluded target triples.
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const clang::CompilerInstance *CI = Interp->getCompilerInstance();
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const llvm::Triple &Triple = CI->getASTContext().getTargetInfo().getTriple();
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// FIXME: ARM fails due to `Not implemented relocation type!`
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if (Triple.isARM())
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return;
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// FIXME: libunwind on darwin is broken, see PR49692.
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if (Triple.isOSDarwin() && (Triple.getArch() == llvm::Triple::aarch64 ||
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Triple.getArch() == llvm::Triple::aarch64_32))
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return;
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// Check if platform does not support exceptions.
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{
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// Force the creation of an incremental executor to call getSymbolAddress.
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llvm::cantFail(Interp->ParseAndExecute(""));
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auto Sym = Interp->getSymbolAddress("__cxa_throw");
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if (!Sym) {
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LLVMConsumeError(llvm::wrap(Sym.takeError()));
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return;
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}
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}
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llvm::cantFail(Interp->ParseAndExecute(ExceptionCode));
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testing::internal::CaptureStdout();
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auto ThrowException =
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(int (*)())llvm::cantFail(Interp->getSymbolAddress("throw_exception"));
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EXPECT_ANY_THROW(ThrowException());
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std::string CapturedStdOut = testing::internal::GetCapturedStdout();
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EXPECT_EQ(CapturedStdOut, "Caught: 'To be caught in JIT'\n");
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llvm::llvm_shutdown();
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}
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} // end anonymous namespace
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