1 // Copyright 2015 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <limits>
6
7 #include "core/fxcrt/fx_memory.h"
8 #include "testing/gtest/include/gtest/gtest.h"
9
10 namespace {
11
12 const size_t kMaxByteAlloc = std::numeric_limits<size_t>::max();
13 const size_t kMaxIntAlloc = kMaxByteAlloc / sizeof(int);
14 const size_t kOverflowIntAlloc = kMaxIntAlloc + 100;
15 const size_t kWidth = 640;
16 const size_t kOverflowIntAlloc2D = kMaxIntAlloc / kWidth + 10;
17
18 } // namespace
19
20 // TODO(tsepez): re-enable OOM tests if we can find a way to
21 // prevent it from hosing the bots.
TEST(fxcrt,DISABLED_FX_AllocOOM)22 TEST(fxcrt, DISABLED_FX_AllocOOM) {
23 EXPECT_DEATH_IF_SUPPORTED((void)FX_Alloc(int, kMaxIntAlloc), "");
24
25 int* ptr = FX_Alloc(int, 1);
26 EXPECT_TRUE(ptr);
27 EXPECT_DEATH_IF_SUPPORTED((void)FX_Realloc(int, ptr, kMaxIntAlloc), "");
28 FX_Free(ptr);
29 }
30
TEST(fxcrt,FX_AllocOverflow)31 TEST(fxcrt, FX_AllocOverflow) {
32 // |ptr| needs to be defined and used to avoid Clang optimizes away the
33 // FX_Alloc() statement overzealously for optimized builds.
34 int* ptr = nullptr;
35 EXPECT_DEATH_IF_SUPPORTED(ptr = FX_Alloc(int, kOverflowIntAlloc), "") << ptr;
36
37 ptr = FX_Alloc(int, 1);
38 EXPECT_TRUE(ptr);
39 EXPECT_DEATH_IF_SUPPORTED((void)FX_Realloc(int, ptr, kOverflowIntAlloc), "");
40 FX_Free(ptr);
41 }
42
TEST(fxcrt,FX_AllocOverflow2D)43 TEST(fxcrt, FX_AllocOverflow2D) {
44 // |ptr| needs to be defined and used to avoid Clang optimizes away the
45 // FX_Alloc() statement overzealously for optimized builds.
46 int* ptr = nullptr;
47 EXPECT_DEATH_IF_SUPPORTED(ptr = FX_Alloc2D(int, kWidth, kOverflowIntAlloc2D),
48 "")
49 << ptr;
50 }
51
TEST(fxcrt,DISABLED_FX_TryAllocOOM)52 TEST(fxcrt, DISABLED_FX_TryAllocOOM) {
53 EXPECT_FALSE(FX_TryAlloc(int, kMaxIntAlloc));
54
55 int* ptr = FX_Alloc(int, 1);
56 EXPECT_TRUE(ptr);
57 EXPECT_FALSE(FX_TryRealloc(int, ptr, kMaxIntAlloc));
58 FX_Free(ptr);
59 }
60
TEST(fxcrt,FX_TryAllocOverflow)61 TEST(fxcrt, FX_TryAllocOverflow) {
62 // |ptr| needs to be defined and used to avoid Clang optimizes away the
63 // calloc() statement overzealously for optimized builds.
64 int* ptr = (int*)calloc(sizeof(int), kOverflowIntAlloc);
65 EXPECT_FALSE(ptr) << ptr;
66
67 ptr = FX_Alloc(int, 1);
68 EXPECT_TRUE(ptr);
69 EXPECT_FALSE(FX_TryRealloc(int, ptr, kOverflowIntAlloc));
70 FX_Free(ptr);
71 }
72
TEST(fxcrt,DISABLED_FXMEM_DefaultOOM)73 TEST(fxcrt, DISABLED_FXMEM_DefaultOOM) {
74 EXPECT_FALSE(FXMEM_DefaultAlloc(kMaxByteAlloc, 0));
75
76 void* ptr = FXMEM_DefaultAlloc(1, 0);
77 EXPECT_TRUE(ptr);
78 EXPECT_FALSE(FXMEM_DefaultRealloc(ptr, kMaxByteAlloc, 0));
79 FXMEM_DefaultFree(ptr, 0);
80 }
81