Generating getter method fails on access

[erikzenker]

I was using the latest trunk on the compiler explorer. Is this always the current version from git?

I tried to compile the following program:

#include <iostream>

template <typename T>
constexpr void getter(T origin){

    compiler.require(!origin.variables().empty(), "Need to have member variables");

    for...(auto o: origin.variables()){
        if(o.is_public()){
            o.make_private();
            __generate o;

            __generate __fragment struct {
                typename(o) idexpr("get_", o)() const {
                    return idexpr(o);
                }
            };
        }
    }
}

// USER CODE
class(getter) Test {
    public:
        int a;
};

constexpr {compiler.debug($Test);}

int main(){

    Test test;
    test.get_a();

    return 0;
}

This is the generated class:

class Test {

    int a;

public:

    int  get_a() const     {

        return a;

    }

}

But calling test.get_a(); leads to a compiler error:

#0 0x0000557524b49cea llvm::sys::PrintStackTrace(llvm::raw_ostream&) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1da0cea)

#1 0x0000557524b47b46 llvm::sys::RunSignalHandlers() (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1d9eb46)

#2 0x0000557524b47c8c SignalHandler(int) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1d9ec8c)

#3 0x00007fc4b2ce4890 __restore_rt (/lib/x86_64-linux-gnu/libpthread.so.0+0x12890)

#4 0x000055752664a6af clang::Stmt::getLocStart() const (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x38a16af)

#5 0x0000557526594cd3 clang::Expr::getExprLoc() const (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x37ebcd3)

#6 0x0000557524d1d767 clang::CodeGen::ApplyDebugLocation::ApplyDebugLocation(clang::CodeGen::CodeGenFunction&, clang::Expr const*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1f74767)

#7 0x0000557524ec7efa clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x211eefa)

#8 0x0000557524ec87f9 clang::CodeGen::CodeGenFunction::EmitDeclRefLValue(clang::DeclRefExpr const*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x211f7f9)

#9 0x0000557524ec8226 clang::CodeGen::CodeGenFunction::EmitLValue(clang::Expr const*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x211f226)

#10 0x0000557524ecc49c clang::CodeGen::CodeGenFunction::EmitCheckedLValue(clang::Expr const*, clang::CodeGen::CodeGenFunction::TypeCheckKind) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x212349c)

#11 0x0000557524efeb59 (anonymous namespace)::ScalarExprEmitter::EmitLoadOfLValue(clang::Expr const*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x2155b59)

#12 0x0000557524efe272 (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x2155272)

#13 0x0000557524f026c8 (anonymous namespace)::ScalarExprEmitter::VisitCastExpr(clang::CastExpr*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x21596c8)

#14 0x0000557524efdccd (anonymous namespace)::ScalarExprEmitter::Visit(clang::Expr*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x2154ccd)

#15 0x0000557524efe660 clang::CodeGen::CodeGenFunction::EmitScalarExpr(clang::Expr const*, bool) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x2155660)

#16 0x0000557524d4ab05 clang::CodeGen::CodeGenFunction::EmitReturnStmt(clang::ReturnStmt const&) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1fa1b05)

#17 0x0000557524d4c8e5 clang::CodeGen::CodeGenFunction::EmitStmt(clang::Stmt const*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1fa38e5)

#18 0x0000557524d4cd9f clang::CodeGen::CodeGenFunction::EmitCompoundStmtWithoutScope(clang::CompoundStmt const&, bool, clang::CodeGen::AggValueSlot) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1fa3d9f)

#19 0x0000557524d7f6c1 clang::CodeGen::CodeGenFunction::EmitFunctionBody(clang::CodeGen::FunctionArgList&, clang::Stmt const*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1fd66c1)

#20 0x0000557524d85c5d clang::CodeGen::CodeGenFunction::GenerateCode(clang::GlobalDecl, llvm::Function*, clang::CodeGen::CGFunctionInfo const&) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1fdcc5d)

#21 0x0000557524da0518 clang::CodeGen::CodeGenModule::EmitGlobalFunctionDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x1ff7518)

#22 0x0000557524dc4ee0 clang::CodeGen::CodeGenModule::EmitGlobalDefinition(clang::GlobalDecl, llvm::GlobalValue*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x201bee0)

#23 0x0000557524dc4fc9 clang::CodeGen::CodeGenModule::EmitDeferred() (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x201bfc9)

#24 0x0000557524dc5084 clang::CodeGen::CodeGenModule::Release() (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x201c084)

#25 0x00005575253fa337 (anonymous namespace)::CodeGeneratorImpl::HandleTranslationUnit(clang::ASTContext&) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x2651337)

#26 0x00005575253f8d05 clang::BackendConsumer::HandleTranslationUnit(clang::ASTContext&) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x264fd05)

#27 0x00005575258bacba clang::ParseAST(clang::Sema&, bool, bool) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x2b11cba)

#28 0x00005575253f8107 clang::CodeGenAction::ExecuteAction() (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x264f107)

#29 0x00005575250c9a16 clang::FrontendAction::Execute() (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x2320a16)

#30 0x00005575250975ec clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x22ee5ec)

#31 0x000055752516db03 clang::ExecuteCompilerInvocation(clang::CompilerInstance*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x23c4b03)

#32 0x00005575236dc048 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x933048)

#33 0x00005575236686c6 main (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x8bf6c6)

#34 0x00007fc4b1b9db97 __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21b97)

#35 0x00005575236d9aba _start (/opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0+0x930aba)

Stack dump:

0.	Program arguments: /opt/compiler-explorer/clang-cppx-trunk-20181027/bin/clang-5.0 -cc1 -triple x86_64-unknown-linux-gnu -S -disable-free -disable-llvm-verifier -discard-value-names -main-file-name example.cpp -mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debug-info-kind=limited -dwarf-version=4 -debugger-tuning=gdb -coverage-notes-file /tmp/compiler-explorer-compiler118927-10215-1tdhhf0.dm95f/output.gcno -resource-dir /opt/compiler-explorer/clang-cppx-trunk-20181027/lib/clang/5.0.0 -include cppx/meta -include cppx/compiler -I /opt/compiler-explorer/clang-cppx-trunk/include -c-isystem /usr/include/x86_64-linux-gnu -cxx-isystem /usr/include/x86_64-linux-gnu -internal-isystem /opt/compiler-explorer/clang-cppx-trunk-20181027/bin/../include/c++/v1 -internal-isystem /usr/local/include -internal-isystem /opt/compiler-explorer/clang-cppx-trunk-20181027/lib/clang/5.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -std=c++1z -fdeprecated-macro -fdebug-compilation-dir /compiler-explorer -ferror-limit 19 -fmessage-length 0 -fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -fcolor-diagnostics -freflection -mllvm --x86-asm-syntax=intel -o /tmp/compiler-explorer-compiler118927-10215-1tdhhf0.dm95f/output.s -x c++ <source> 

1.	<eof> parser at end of file

2.	Per-file LLVM IR generation

3.	Generating code for declaration 'Test::get_a'

clang-5.0: error: unable to execute command: Segmentation fault (core dumped)

clang-5.0: error: clang frontend command failed due to signal (use -v to see invocation)

clang version 5.0.0 (https://github.com/asutton/clang.git dbca1f802cd36d5f7116b24487da29d1c64c3a0e) (https://github.com/llvm-mirror/llvm.git 40b1e969f9cb2a0c697e247435193fb006ef1311)

Target: x86_64-unknown-linux-gnu

Thread model: posix

InstalledDir: /opt/compiler-explorer/clang-cppx-trunk/bin

clang-5.0: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script.

clang-5.0: note: diagnostic msg: 

********************

PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:

Preprocessed source(s) and associated run script(s) are located at:

clang-5.0: note: diagnostic msg: /tmp/example-13e4ff.cpp

clang-5.0: note: diagnostic msg: /tmp/example-13e4ff.sh

clang-5.0: note: diagnostic msg: 

********************

Compiler returned: 254