1//===- unittests/AST/DeclTest.cpp --- Declaration tests -------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// Unit tests for Decl nodes in the AST.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/ASTMatchers/ASTMatchFinder.h"
15#include "clang/Tooling/Tooling.h"
16#include "gtest/gtest.h"
17
18using namespace clang::ast_matchers;
19using namespace clang::tooling;
20
21TEST(Decl, CleansUpAPValues) {
22  MatchFinder Finder;
23  std::unique_ptr<FrontendActionFactory> Factory(
24      newFrontendActionFactory(&Finder));
25
26  // This is a regression test for a memory leak in APValues for structs that
27  // allocate memory. This test only fails if run under valgrind with full leak
28  // checking enabled.
29  std::vector<std::string> Args(1, "-std=c++11");
30  Args.push_back("-fno-ms-extensions");
31  ASSERT_TRUE(runToolOnCodeWithArgs(
32      Factory->create(),
33      "struct X { int a; }; constexpr X x = { 42 };"
34      "union Y { constexpr Y(int a) : a(a) {} int a; }; constexpr Y y = { 42 };"
35      "constexpr int z[2] = { 42, 43 };"
36      "constexpr int __attribute__((vector_size(16))) v1 = {};"
37      "\n#ifdef __SIZEOF_INT128__\n"
38      "constexpr __uint128_t large_int = 0xffffffffffffffff;"
39      "constexpr __uint128_t small_int = 1;"
40      "\n#endif\n"
41      "constexpr double d1 = 42.42;"
42      "constexpr long double d2 = 42.42;"
43      "constexpr _Complex long double c1 = 42.0i;"
44      "constexpr _Complex long double c2 = 42.0;"
45      "template<int N> struct A : A<N-1> {};"
46      "template<> struct A<0> { int n; }; A<50> a;"
47      "constexpr int &r = a.n;"
48      "constexpr int A<50>::*p = &A<50>::n;"
49      "void f() { foo: bar: constexpr int k = __builtin_constant_p(0) ?"
50      "                         (char*)&&foo - (char*)&&bar : 0; }",
51      Args));
52
53  // FIXME: Once this test starts breaking we can test APValue::needsCleanup
54  // for ComplexInt.
55  ASSERT_FALSE(runToolOnCodeWithArgs(
56      Factory->create(),
57      "constexpr _Complex __uint128_t c = 0xffffffffffffffff;",
58      Args));
59}
60