diff options
Diffstat (limited to 'compiler-rt/lib/asan/tests/asan_test.cc')
| -rw-r--r-- | compiler-rt/lib/asan/tests/asan_test.cc | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/compiler-rt/lib/asan/tests/asan_test.cc b/compiler-rt/lib/asan/tests/asan_test.cc index 41fddf37d6b..eddb28fb49b 100644 --- a/compiler-rt/lib/asan/tests/asan_test.cc +++ b/compiler-rt/lib/asan/tests/asan_test.cc @@ -1220,6 +1220,14 @@ TEST(AddressSanitizer, StrCmpAndFriendsLogicTest) { EXPECT_LT(0, strncasecmp("xyz", "xyy", 10)); EXPECT_LT(0, strncasecmp("Baa", "aaa", 1)); EXPECT_LT(0, strncasecmp("zyx", "", 2)); + + // memcmp + EXPECT_EQ(0, memcmp("a", "b", 0)); + EXPECT_EQ(0, memcmp("ab\0c", "ab\0c", 4)); + EXPECT_GT(0, memcmp("\0ab", "\0ac", 3)); + EXPECT_GT(0, memcmp("abb\0", "abba", 4)); + EXPECT_LT(0, memcmp("ab\0cd", "ab\0c\0", 5)); + EXPECT_LT(0, memcmp("zza", "zyx", 3)); } typedef int(*PointerToStrCmp)(const char*, const char*); @@ -1292,6 +1300,30 @@ TEST(AddressSanitizer, StrNCaseCmpOOBTest) { RunStrNCmpTest(&strncasecmp); } +TEST(AddressSanitizer, MemCmpOOBTest) { + size_t size = Ident(100); + char *s1 = MallocAndMemsetString(size); + char *s2 = MallocAndMemsetString(size); + // Normal memcmp calls. + Ident(memcmp(s1, s2, size)); + Ident(memcmp(s1 + size - 1, s2 + size - 1, 1)); + Ident(memcmp(s1 - 1, s2 - 1, 0)); + // One of arguments points to not allocated memory. + EXPECT_DEATH(Ident(memcmp)(s1 - 1, s2, 1), LeftOOBErrorMessage(1)); + EXPECT_DEATH(Ident(memcmp)(s1, s2 - 1, 1), LeftOOBErrorMessage(1)); + EXPECT_DEATH(Ident(memcmp)(s1 + size, s2, 1), RightOOBErrorMessage(0)); + EXPECT_DEATH(Ident(memcmp)(s1, s2 + size, 1), RightOOBErrorMessage(0)); + // Hit unallocated memory and die. + EXPECT_DEATH(Ident(memcmp)(s1 + 1, s2 + 1, size), RightOOBErrorMessage(0)); + EXPECT_DEATH(Ident(memcmp)(s1 + size - 1, s2, 2), RightOOBErrorMessage(0)); + // Zero bytes are not terminators and don't prevent from OOB. + s1[size - 1] = '\0'; + s2[size - 1] = '\0'; + EXPECT_DEATH(Ident(memcmp)(s1, s2, size + 1), RightOOBErrorMessage(0)); + free(s1); + free(s2); +} + static const char *kOverlapErrorMessage = "strcpy-param-overlap"; TEST(AddressSanitizer, StrArgsOverlapTest) { |
