llvmbot
commented
4 months ago @llvm/issue-subscribers-clang-frontend
Author: None (SaltyPhoti)
Crash trace:
```
Stack dump:
0. Program arguments: ./clang -rewrite-pflow -fopenmp /home/litianying/test.c -o test-rw.c
#0 0x00005567acf6e444 PrintStackTraceSignalHandler(void*) Signals.cpp:0:0
#1 0x00005567acf6c26c llvm::sys::CleanupOnSignal(unsigned long) (./clang+0x384b26c)
#2 0x00005567acea9fd8 CrashRecoverySignalHandler(int) CrashRecoveryContext.cpp:0:0
#3 0x00007fdd6ebc6420 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x14420)
#4 0x00005567b026e3d9 clang::Stmt::getEndLoc() const (./clang+0x6b4d3d9)
#5 0x00005567b026eb6d clang::Stmt::getSourceRange() const (./clang+0x6b4db6d)
#6 0x00005567b02d3fd3 clang::TextNodeDumper::Visit(clang::Stmt const*) (./clang+0x6bb2fd3)
#7 0x00005567aff087b2 clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'()::operator()() const (./clang+0x67e77b2)
#8 0x00005567aff091c5 std::_Function_handler<void (bool), void clang::TextTreeStructure::AddChild<clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'()>(llvm::StringRef, clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'())::'lambda'(bool)>::_M_invoke(std::_Any_data const&, bool&&) (./clang+0x67e81c5)
#9 0x00005567aff091fe std::_Function_handler<void (bool), void clang::TextTreeStructure::AddChild<clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'()>(llvm::StringRef, clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'())::'lambda'(bool)>::_M_invoke(std::_Any_data const&, bool&&) (./clang+0x67e81fe)
#10 0x00005567aff08ac8 void clang::TextTreeStructure::AddChild<clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'()>(llvm::StringRef, clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'()) (./clang+0x67e7ac8)
#11 0x00005567aff088d1 clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'()::operator()() const (./clang+0x67e78d1)
#12 0x00005567aff091c5 std::_Function_handler<void (bool), void clang::TextTreeStructure::AddChild<clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'()>(llvm::StringRef, clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Stmt const*, llvm::StringRef)::'lambda'())::'lambda'(bool)>::_M_invoke(std::_Any_data const&, bool&&) (./clang+0x67e81c5)
#13 0x00005567aff0e1b6 std::_Function_handler<void (bool), void clang::TextTreeStructure::AddChild<clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Decl const*)::'lambda'()>(llvm::StringRef, clang::ASTNodeTraverser<clang::ASTDumper, clang::TextNodeDumper>::Visit(clang::Decl const*)::'lambda'())::'lambda'(bool)>::_M_invoke(std::_Any_data const&, bool&&) (./clang+0x67ed1b6)
#14 0x00005567aff21ec6 clang::Decl::dump(llvm::raw_ostream&, bool, clang::ASTDumpOutputFormat) const (./clang+0x6800ec6)
#15 0x00005567aeff50eb clang::SourceTransformAction::ExecuteAction() (./clang+0x58d40eb)
#16 0x00005567ada97b11 clang::FrontendAction::Execute() (./clang+0x4376b11)
#17 0x00005567ada1ece3 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (./clang+0x42fdce3)
#18 0x00005567adb7af7b clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (./clang+0x4459f7b)
#19 0x00005567aa8c77b4 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (./clang+0x11a67b4)
#20 0x00005567aa8c0d5b ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) driver.cpp:0:0
#21 0x00005567ad888559 void llvm::function_ref<void ()>::callback_fn<clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const::'lambda'()>(long) Job.cpp:0:0
#22 0x00005567aceaa0d7 llvm::CrashRecoveryContext::RunSafely(llvm::function_ref<void ()>) (./clang+0x37890d7)
#23 0x00005567ad888b4c clang::driver::CC1Command::Execute(llvm::ArrayRef<llvm::Optional<llvm::StringRef>>, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>>*, bool*) const (.part.0) Job.cpp:0:0
#24 0x00005567ad85293e clang::driver::Compilation::ExecuteCommand(clang::driver::Command const&, clang::driver::Command const*&, bool) const (./clang+0x413193e)
#25 0x00005567ad85335d clang::driver::Compilation::ExecuteJobs(clang::driver::JobList const&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&, bool) const (./clang+0x413235d)
#26 0x00005567ad85e1ac clang::driver::Driver::ExecuteCompilation(clang::driver::Compilation&, llvm::SmallVectorImpl<std::pair<int, clang::driver::Command const*>>&) (./clang+0x413d1ac)
#27 0x00005567aa8c5539 clang_main(int, char**) (./clang+0x11a4539)
#28 0x00007fdd6e644083 __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:342:3
#29 0x00005567aa8c096e _start (./clang+0x119f96e)
```
Relavant code:
(Create CallExpr)
```
CallExpr *MyNodeCreater::CreateCall() {
std::string FuncName = "Func";
QualType T = getContext().getFunctionType(getContext().UnsignedIntTy, {getContext().VoidTy}, {});
DeclarationName N =
DeclarationName(&(getContext().Idents).get(PtoolsStartFuncName));
FunctionDecl *FD= FunctionDecl::Create(
getContext(), getContext().getTranslationUnitDecl(), SourceLocation(),
SourceLocation(), N, T, nullptr, SC_Extern);
// add extern func
FD->setDeclContext(getContext().getTranslationUnitDecl());
Expr *funcExpr= DeclRefExpr::Create(getContext(), NestedNameSpecifierLoc(), SourceLocation(), FD,
false, SourceLocation(), FD->getType(), VK_LValue);
CallExpr *callExpr= CallExpr::Create(
getContext(), funcExpr, None, getContext().VoidTy, VK_LValue, SourceLocation(), FPOptionsOverride());
return callExpr;
}
```
(Visit function)
```
DeclNode VisitFunctionDecl(FunctionDecl *D) override {
FunctionDecl *NewFD = nullptr;
DeclarationName N = D->getNameInfo().getName();
QualType T = D->getType();
ASTContext &Ctx = getContext();
NewFD = FunctionDecl::Create(Ctx, Ctx.getTranslationUnitDecl(),
SourceLocation(), SourceLocation(), N, T, nullptr, SC_None);
NewFD->setDeclContext(Ctx.getTranslationUnitDecl());
PToolsAstNodeCreator astNodeCreator(getContext());
// std::cout << "N name getAsString: " << N.getAsString() << " ------------------\n";
CallExpr *func= myNodeCreater.CreateCall();
CallExpr *anotherFunc = myNodeCreater.CreateAnotherCall(); // identical function to CreateCall, with only function name change
std::vector<Stmt *> NewStmts;
NewStmts.push_back(func);
StmtNode NewBody = Visit(D->getBody());
for (auto SubToBody : NewBody) {
NewStmts.push_back(SubToBody);
}
NewStmts.push_back(anotherFunc );
CompoundStmt *CS = CompoundStmt::Create(getContext(), NewStmts, FPOptionsOverride(), SourceLocation(), SourceLocation());
NewFD->setBody(CS);
Ctx.getTranslationUnitDecl()->addDecl(NewFD);
return NewFD;
}
```
(runPass function)
```
void SourceTransformAction::runPass(ASTTransformer *Pass) {
std::unique_ptr<CompilerInstance> Clang(new CompilerInstance());
Clang->createDiagnostics();
CompilerInstance &CI = *Clang.get();
auto Invocation = std::make_shared<CompilerInvocation>(getCompilerInstance().getInvocation());
CI.setInvocation(std::move(Invocation));
CI.createTarget();
CI.LoadRequestedPlugins();
CI.createFileManager();
CI.createSourceManager(CI.getFileManager());
CI.createPreprocessor(getTranslationUnitKind());
CI.createASTContext();
ASTContext &NewContext = CI.getASTContext();
NewContext.addTranslationUnitDecl();
Pass->setContext(NewContext);
auto &SrcManager = CI.getSourceManager();
std::cout << "Old TU: ---------------------------------\n";
getContext().getTranslationUnitDecl()->dump();
for (Decl *D : getContext().getTranslationUnitDecl()->decls()) {
SourceLocation Loc = D->getLocation();
Loc = SrcManager.getExpansionLoc(Loc);
// If this is for a builtin, ignore it.
if (Loc.isInvalid())
continue;
Pass->Visit(D);
}
setContext(NewContext);
std::cout << "New TU: ---------------------------------\n";
getContext().getTranslationUnitDecl()->dump();
}
```
(Transform())
```
virtual void Transform() override {
runPass(new MyTransformer());
std::cout << "after runpass --------------\n";
getContext().getTranslationUnitDecl()->dump();
};
```
The printing shows that, the transformation is OK after "NEW TU" printing, but changed after "after runpass" printing. Really need some help on this. Thanks a lot in advance!
Crash trace:
Relavant code: (Create CallExpr)
(Visit function)
(runPass function)
(Transform())
The printing shows that, the transformation is OK after "NEW TU" printing, but changed after "after runpass" printing. Really need some help on this. Thanks a lot in advance!