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//===- unittests/Analysis/CFGTest.cpp - CFG tests -------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Analysis/CFG.h"
#include "clang/Tooling/Tooling.h"
#include "gtest/gtest.h"
#include <string>
#include <vector>
namespace clang {
namespace analysis {
namespace {
// Constructing a CFG for a range-based for over a dependent type fails (but
// should not crash).
TEST(CFG, RangeBasedForOverDependentType) {
const char *Code = "class Foo;\n"
"template <typename T>\n"
"void f(const T &Range) {\n"
" for (const Foo *TheFoo : Range) {\n"
" }\n"
"}\n";
class CFGCallback : public ast_matchers::MatchFinder::MatchCallback {
public:
bool SawFunctionBody = false;
void run(const ast_matchers::MatchFinder::MatchResult &Result) override {
const auto *Func = Result.Nodes.getNodeAs<FunctionDecl>("func");
Stmt *Body = Func->getBody();
if (!Body)
return;
SawFunctionBody = true;
std::unique_ptr<CFG> cfg =
CFG::buildCFG(nullptr, Body, Result.Context, CFG::BuildOptions());
EXPECT_EQ(nullptr, cfg);
}
} Callback;
ast_matchers::MatchFinder Finder;
Finder.addMatcher(ast_matchers::functionDecl().bind("func"), &Callback);
std::unique_ptr<tooling::FrontendActionFactory> Factory(
tooling::newFrontendActionFactory(&Finder));
std::vector<std::string> Args = {"-std=c++11", "-fno-delayed-template-parsing"};
ASSERT_TRUE(tooling::runToolOnCodeWithArgs(Factory->create(), Code, Args));
EXPECT_TRUE(Callback.SawFunctionBody);
}
} // namespace
} // namespace analysis
} // namespace clang
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