compiler-rt: Rename .cc file in lib/scudo/standalone/tests to .cpp

Like r367463, but for scudo/standalone/tests.

With this, all files in compiler-rt/lib have extension cpp.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@367569 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 225 insertions, 0 deletions

diff --git a/lib/scudo/standalone/tests/wrappers_c_test.cpp b/lib/scudo/standalone/tests/wrappers_c_test.cpp
new file mode 100644
index 000000000..4f3c9aea6
--- /dev/null
+++ b/lib/scudo/standalone/tests/wrappers_c_test.cpp
@@ -0,0 +1,225 @@
+//===-- wrappers_c_test.cpp -------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "platform.h"
+
+#include "gtest/gtest.h"
+
+#include <limits.h>
+#include <malloc.h>
+#include <unistd.h>
+
+// Note that every C allocation function in the test binary will be fulfilled
+// by Scudo (this includes the gtest APIs, etc.), which is a test by itself.
+// But this might also lead to unexpected side-effects, since the allocation and
+// deallocation operations in the TEST functions will coexist with others (see
+// the EXPECT_DEATH comment below).
+
+// We have to use a small quarantine to make sure that our double-free tests
+// trigger. Otherwise EXPECT_DEATH ends up reallocating the chunk that was just
+// freed (this depends on the size obviously) and the following free succeeds.
+extern "C" __attribute__((visibility("default"))) const char *
+__scudo_default_options() {
+  return "quarantine_size_kb=256:thread_local_quarantine_size_kb=128:"
+         "quarantine_max_chunk_size=512";
+}
+
+static const size_t Size = 100U;
+
+TEST(ScudoWrappersCTest, Malloc) {
+  void *P = malloc(Size);
+  EXPECT_NE(P, nullptr);
+  EXPECT_LE(Size, malloc_usable_size(P));
+  EXPECT_EQ(reinterpret_cast<uintptr_t>(P) % FIRST_32_SECOND_64(8U, 16U), 0U);
+  EXPECT_DEATH(
+      free(reinterpret_cast<void *>(reinterpret_cast<uintptr_t>(P) | 1U)), "");
+  free(P);
+  EXPECT_DEATH(free(P), "");
+
+  P = malloc(0U);
+  EXPECT_NE(P, nullptr);
+  free(P);
+
+  errno = 0;
+  EXPECT_EQ(malloc(SIZE_MAX), nullptr);
+  EXPECT_EQ(errno, ENOMEM);
+}
+
+TEST(ScudoWrappersCTest, Calloc) {
+  void *P = calloc(1U, Size);
+  EXPECT_NE(P, nullptr);
+  EXPECT_LE(Size, malloc_usable_size(P));
+  for (size_t I = 0; I < Size; I++)
+    EXPECT_EQ((reinterpret_cast<uint8_t *>(P))[I], 0U);
+  free(P);
+
+  P = calloc(1U, 0U);
+  EXPECT_NE(P, nullptr);
+  free(P);
+  P = calloc(0U, 1U);
+  EXPECT_NE(P, nullptr);
+  free(P);
+
+  errno = 0;
+  EXPECT_EQ(calloc(SIZE_MAX, 1U), nullptr);
+  EXPECT_EQ(errno, ENOMEM);
+  errno = 0;
+  EXPECT_EQ(calloc(static_cast<size_t>(LONG_MAX) + 1U, 2U), nullptr);
+  if (SCUDO_ANDROID)
+    EXPECT_EQ(errno, ENOMEM);
+  errno = 0;
+  EXPECT_EQ(calloc(SIZE_MAX, SIZE_MAX), nullptr);
+  EXPECT_EQ(errno, ENOMEM);
+}
+
+TEST(ScudoWrappersCTest, Memalign) {
+  void *P;
+  for (size_t I = FIRST_32_SECOND_64(2U, 3U); I <= 18U; I++) {
+    const size_t Alignment = 1U << I;
+
+    P = memalign(Alignment, Size);
+    EXPECT_NE(P, nullptr);
+    EXPECT_LE(Size, malloc_usable_size(P));
+    EXPECT_EQ(reinterpret_cast<uintptr_t>(P) % Alignment, 0U);
+    free(P);
+
+    P = nullptr;
+    EXPECT_EQ(posix_memalign(&P, Alignment, Size), 0);
+    EXPECT_NE(P, nullptr);
+    EXPECT_LE(Size, malloc_usable_size(P));
+    EXPECT_EQ(reinterpret_cast<uintptr_t>(P) % Alignment, 0U);
+    free(P);
+  }
+
+  EXPECT_EQ(memalign(4096U, SIZE_MAX), nullptr);
+  EXPECT_EQ(posix_memalign(&P, 15U, Size), EINVAL);
+  EXPECT_EQ(posix_memalign(&P, 4096U, SIZE_MAX), ENOMEM);
+
+  // Android's memalign accepts non power-of-2 alignments, and 0.
+  if (SCUDO_ANDROID) {
+    for (size_t Alignment = 0U; Alignment <= 128U; Alignment++) {
+      P = memalign(Alignment, 1024U);
+      EXPECT_NE(P, nullptr);
+      free(P);
+    }
+  }
+}
+
+TEST(ScudoWrappersCTest, AlignedAlloc) {
+  const size_t Alignment = 4096U;
+  void *P = aligned_alloc(Alignment, Alignment * 4U);
+  EXPECT_NE(P, nullptr);
+  EXPECT_LE(Alignment * 4U, malloc_usable_size(P));
+  EXPECT_EQ(reinterpret_cast<uintptr_t>(P) % Alignment, 0U);
+  free(P);
+
+  errno = 0;
+  P = aligned_alloc(Alignment, Size);
+  EXPECT_EQ(P, nullptr);
+  EXPECT_EQ(errno, EINVAL);
+}
+
+TEST(ScudoWrappersCTest, Realloc) {
+  // realloc(nullptr, N) is malloc(N)
+  void *P = realloc(nullptr, 0U);
+  EXPECT_NE(P, nullptr);
+  free(P);
+
+  P = malloc(Size);
+  EXPECT_NE(P, nullptr);
+  // realloc(P, 0U) is free(P) and returns nullptr
+  EXPECT_EQ(realloc(P, 0U), nullptr);
+
+  P = malloc(Size);
+  EXPECT_NE(P, nullptr);
+  EXPECT_LE(Size, malloc_usable_size(P));
+  memset(P, 0x42, Size);
+
+  P = realloc(P, Size * 2U);
+  EXPECT_NE(P, nullptr);
+  EXPECT_LE(Size * 2U, malloc_usable_size(P));
+  for (size_t I = 0; I < Size; I++)
+    EXPECT_EQ(0x42, (reinterpret_cast<uint8_t *>(P))[I]);
+
+  P = realloc(P, Size / 2U);
+  EXPECT_NE(P, nullptr);
+  EXPECT_LE(Size / 2U, malloc_usable_size(P));
+  for (size_t I = 0; I < Size / 2U; I++)
+    EXPECT_EQ(0x42, (reinterpret_cast<uint8_t *>(P))[I]);
+  free(P);
+
+  EXPECT_DEATH(P = realloc(P, Size), "");
+
+  errno = 0;
+  EXPECT_EQ(realloc(nullptr, SIZE_MAX), nullptr);
+  EXPECT_EQ(errno, ENOMEM);
+  P = malloc(Size);
+  EXPECT_NE(P, nullptr);
+  errno = 0;
+  EXPECT_EQ(realloc(P, SIZE_MAX), nullptr);
+  EXPECT_EQ(errno, ENOMEM);
+  free(P);
+
+  // Android allows realloc of memalign pointers.
+  if (SCUDO_ANDROID) {
+    const size_t Alignment = 1024U;
+    P = memalign(Alignment, Size);
+    EXPECT_NE(P, nullptr);
+    EXPECT_LE(Size, malloc_usable_size(P));
+    EXPECT_EQ(reinterpret_cast<uintptr_t>(P) % Alignment, 0U);
+    memset(P, 0x42, Size);
+
+    P = realloc(P, Size * 2U);
+    EXPECT_NE(P, nullptr);
+    EXPECT_LE(Size * 2U, malloc_usable_size(P));
+    for (size_t I = 0; I < Size; I++)
+      EXPECT_EQ(0x42, (reinterpret_cast<uint8_t *>(P))[I]);
+    free(P);
+  }
+}
+
+#ifndef M_DECAY_TIME
+#define M_DECAY_TIME -100
+#endif
+
+#ifndef M_PURGE
+#define M_PURGE -101
+#endif
+
+TEST(ScudoWrappersCTest, Mallopt) {
+  errno = 0;
+  EXPECT_EQ(mallopt(-1000, 1), 0);
+  // mallopt doesn't set errno.
+  EXPECT_EQ(errno, 0);
+
+  EXPECT_EQ(mallopt(M_PURGE, 0), 1);
+
+  EXPECT_EQ(mallopt(M_DECAY_TIME, 1), 1);
+  EXPECT_EQ(mallopt(M_DECAY_TIME, 0), 1);
+  EXPECT_EQ(mallopt(M_DECAY_TIME, 1), 1);
+  EXPECT_EQ(mallopt(M_DECAY_TIME, 0), 1);
+}
+
+TEST(ScudoWrappersCTest, OtherAlloc) {
+  const size_t PageSize = sysconf(_SC_PAGESIZE);
+
+  void *P = pvalloc(Size);
+  EXPECT_NE(P, nullptr);
+  EXPECT_EQ(reinterpret_cast<uintptr_t>(P) & (PageSize - 1), 0U);
+  EXPECT_LE(PageSize, malloc_usable_size(P));
+  free(P);
+
+  EXPECT_EQ(pvalloc(SIZE_MAX), nullptr);
+
+  P = pvalloc(Size);
+  EXPECT_NE(P, nullptr);
+  EXPECT_EQ(reinterpret_cast<uintptr_t>(P) & (PageSize - 1), 0U);
+  free(P);
+
+  EXPECT_EQ(valloc(SIZE_MAX), nullptr);
+}