llvm assertion error

I’m trying to use LLVM/Clang API to compile the source code to LLVM IR.



#include <clang/Driver/Compilation.h>
#include <clang/Driver/Driver.h>
#include <clang/Frontend/TextDiagnosticPrinter.h>
#include <llvm/Support/Host.h>
#include <llvm/Support/Program.h>
#include <llvm/Support/raw_ostream.h>

using namespace std;
using namespace clang;
using namespace clang::driver;

int main(int argc, char** argv)
cout << “Starting ----” << std::endl;

// [clang -S -emit-llvm ./test/hello_world.cpp]

// Arguments to pass to the clang driver:
// clang getinmemory.c -lcurl -v
// Path to the C file
string clangPath = “clang”;

string inputPath = “./test/hello_world.cpp”;
string outputPath = “hello_world.ll”;

vector<const char *> args;

// The clang driver needs a DiagnosticsEngine so it can report problems
clang::DiagnosticOptions *Options = new clang::DiagnosticOptions();
//clang::TextDiagnosticPrinter *DiagClient = new clang::TextDiagnosticPrinter(llvm::errs(), Options);
clang::IntrusiveRefCntPtrclang::DiagnosticIDs DiagID(new clang::DiagnosticIDs());
clang::DiagnosticsEngine Diags(DiagID, Options);

cout << “making driver” << endl;

// Create the clang driver
clang::driver::Driver TheDriver(args[0], llvm::sys::getDefaultTargetTriple(), outputPath, Diags);

// C++ code
//TheDriver.CCCIsCXX = true;

cout << “making compilation” << endl;

// Create the set of actions to perform
clang::OwningPtrclang::driver::Compilation Compilation(TheDriver.BuildCompilation(args));

cout << “printing actions:” << endl;

// Print the set of actions

std::cout << “Done ----” << std::endl;

// Carry out the actions
int Res = 0;
SmallVector<std::pair<int, const Command *>, 4> FailingCommands;
if (Compilation)
Res = TheDriver.ExecuteCompilation(*Compilation, FailingCommands);

// Report problems
if (Res < 0)
TheDriver.generateCompilationDiagnostics(*Compilation, FailingCommands);
for (SmallVectorImpl< std::pair<int,
const Command *> >::iterator it = FailingCommands.begin(),
ie = FailingCommands.end(); it != ie; ++it) {
int CommandRes = it->first;
const Command *FailingCommand = it->second;
if (!Res)
Res = CommandRes;

// If result status is < 0, then the driver command signalled an error.
// If result status is 70, then the driver command reported a fatal error.
// In these cases, generate additional diagnostic information if possible.
if (CommandRes < 0 || CommandRes == 70) {
TheDriver.generateCompilationDiagnostics(*Compilation, FailingCommand);

return Res;

successfully built with command-line:

MBA-Anton:build asmirnov$ clang++ llvm-config --cxxflags llvm-config --ldflags llvm-config --libs all -lclang -lclangAST -lclangASTMatchers -lclangAnalysis -lclangApplyReplacements -lclangBasic -lclangCodeGen -lclangDriver -lclangDynamicASTMatchers -lclangEdit -lclangFormat -lclangFrontend -lclangFrontendTool -lclangIndex -lclangLex -lclangParse -lclangQuery -lclangRewriteCore -lclangRewriteFrontend -lclangSema -lclangSerialization -lclangStaticAnalyzerCheckers -lclangStaticAnalyzerCore -lclangStaticAnalyzerFrontend -lclangTidy -lclangTidyLLVMModule -lclangTooling …/clang_ir.cpp -o clang_ir
MBA-Anton:build asmirnov$

while running i’m getting assertion error:

MBA-Anton:build asmirnov$ ./clang_ir
Starting ----
making driver
making compilation
Assertion failed: (getClient() && “DiagnosticClient not set!”), function EmitCurrentDiagnostic, file /Users/asmirnov/Documents/dev/src/llvm_34/tools/clang/lib/Basic/Diagnostic.cpp, line 391.
Abort trap: 6
MBA-Anton:build asmirnov$