1 /* Self tests for vector utility routines for GDB, the GNU debugger. 2 3 Copyright (C) 2019-2020 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include "gdbsupport/common-defs.h" 21 #include "gdbsupport/selftest.h" 22 23 #include "gdbsupport/gdb_vecs.h" 24 25 namespace selftests { 26 namespace vector_utils_tests { 27 28 static void 29 unordered_remove_tests () 30 { 31 /* Create vector with a single object in, and then remove that object. 32 This test was added after a bug was discovered where unordered_remove 33 would cause a self move assign. If the C++ standard library is 34 compiled in debug mode (by passing -D_GLIBCXX_DEBUG=1) and the 35 operator= is removed from struct obj this test used to fail with an 36 error from the C++ standard library. */ 37 struct obj 38 { 39 std::vector<void *> var; 40 41 obj() = default; 42 43 /* gcc complains if we provide an assignment operator but no copy 44 constructor, so provide one even if don't really care for this test. */ 45 obj(const obj &other) 46 { 47 this->var = other.var; 48 } 49 50 obj &operator= (const obj &other) 51 { 52 if (this == &other) 53 error (_("detected self move assign")); 54 this->var = other.var; 55 return *this; 56 } 57 }; 58 59 std::vector<obj> v; 60 v.emplace_back (); 61 auto it = v.end () - 1; 62 unordered_remove (v, it); 63 SELF_CHECK (v.empty ()); 64 } 65 66 } /* namespace vector_utils_tests */ 67 } /* amespace selftests */ 68 69 void _initialize_vec_utils_selftests (); 70 void 71 _initialize_vec_utils_selftests () 72 { 73 selftests::register_test 74 ("unordered_remove", 75 selftests::vector_utils_tests::unordered_remove_tests); 76 } 77