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-rw-r--r--tests/string_test.cpp235
1 files changed, 152 insertions, 83 deletions
diff --git a/tests/string_test.cpp b/tests/string_test.cpp
index c35976a3e..14b284e2d 100644
--- a/tests/string_test.cpp
+++ b/tests/string_test.cpp
@@ -222,7 +222,7 @@ TEST(string, strcat) {
TEST(string, strcpy2) {
char buf[1];
char* orig = strdup("");
- strcpy(buf, orig);
+ ASSERT_EQ(buf, strcpy(buf, orig));
ASSERT_EQ('\0', buf[0]);
free(orig);
}
@@ -232,13 +232,8 @@ TEST(string, strcpy3) {
char buf[10];
char* orig = strdup("12345");
memset(buf, 'A', sizeof(buf));
- strcpy(buf, orig);
- ASSERT_EQ('1', buf[0]);
- ASSERT_EQ('2', buf[1]);
- ASSERT_EQ('3', buf[2]);
- ASSERT_EQ('4', buf[3]);
- ASSERT_EQ('5', buf[4]);
- ASSERT_EQ('\0', buf[5]);
+ ASSERT_EQ(buf, strcpy(buf, orig));
+ ASSERT_STREQ("12345", buf);
ASSERT_EQ('A', buf[6]);
ASSERT_EQ('A', buf[7]);
ASSERT_EQ('A', buf[8]);
@@ -251,17 +246,41 @@ TEST(string, strcpy4) {
char buf[10];
char* orig = strdup("123456789");
memset(buf, 'A', sizeof(buf));
- strcpy(buf, orig);
- ASSERT_EQ('1', buf[0]);
- ASSERT_EQ('2', buf[1]);
- ASSERT_EQ('3', buf[2]);
- ASSERT_EQ('4', buf[3]);
- ASSERT_EQ('5', buf[4]);
- ASSERT_EQ('6', buf[5]);
- ASSERT_EQ('7', buf[6]);
- ASSERT_EQ('8', buf[7]);
- ASSERT_EQ('9', buf[8]);
- ASSERT_EQ('\0', buf[9]);
+ ASSERT_EQ(buf, strcpy(buf, orig));
+ ASSERT_STREQ("123456789", buf);
+ free(orig);
+}
+
+// one byte target with "\0" source
+TEST(string, stpcpy2) {
+ char buf[1];
+ char* orig = strdup("");
+ ASSERT_EQ(buf, stpcpy(buf, orig));
+ ASSERT_EQ('\0', buf[0]);
+ free(orig);
+}
+
+// multibyte target where we under fill target
+TEST(string, stpcpy3) {
+ char buf[10];
+ char* orig = strdup("12345");
+ memset(buf, 'A', sizeof(buf));
+ ASSERT_EQ(buf+strlen(orig), stpcpy(buf, orig));
+ ASSERT_STREQ("12345", buf);
+ ASSERT_EQ('A', buf[6]);
+ ASSERT_EQ('A', buf[7]);
+ ASSERT_EQ('A', buf[8]);
+ ASSERT_EQ('A', buf[9]);
+ free(orig);
+}
+
+// multibyte target where we fill target exactly
+TEST(string, stpcpy4) {
+ char buf[10];
+ char* orig = strdup("123456789");
+ memset(buf, 'A', sizeof(buf));
+ ASSERT_EQ(buf+strlen(orig), stpcpy(buf, orig));
+ ASSERT_STREQ("123456789", buf);
free(orig);
}
@@ -272,13 +291,7 @@ TEST(string, strcat2) {
buf[1] = '\0';
char* res = strcat(buf, "01234");
ASSERT_EQ(buf, res);
- ASSERT_EQ('a', buf[0]);
- ASSERT_EQ('0', buf[1]);
- ASSERT_EQ('1', buf[2]);
- ASSERT_EQ('2', buf[3]);
- ASSERT_EQ('3', buf[4]);
- ASSERT_EQ('4', buf[5]);
- ASSERT_EQ('\0', buf[6]);
+ ASSERT_STREQ("a01234", buf);
ASSERT_EQ('A', buf[7]);
ASSERT_EQ('A', buf[8]);
ASSERT_EQ('A', buf[9]);
@@ -291,16 +304,7 @@ TEST(string, strcat3) {
buf[1] = '\0';
char* res = strcat(buf, "01234567");
ASSERT_EQ(buf, res);
- ASSERT_EQ('a', buf[0]);
- ASSERT_EQ('0', buf[1]);
- ASSERT_EQ('1', buf[2]);
- ASSERT_EQ('2', buf[3]);
- ASSERT_EQ('3', buf[4]);
- ASSERT_EQ('4', buf[5]);
- ASSERT_EQ('5', buf[6]);
- ASSERT_EQ('6', buf[7]);
- ASSERT_EQ('7', buf[8]);
- ASSERT_EQ('\0', buf[9]);
+ ASSERT_STREQ("a01234567", buf);
}
TEST(string, strncat2) {
@@ -310,13 +314,7 @@ TEST(string, strncat2) {
buf[1] = '\0';
char* res = strncat(buf, "01234", sizeof(buf) - strlen(buf) - 1);
ASSERT_EQ(buf, res);
- ASSERT_EQ('a', buf[0]);
- ASSERT_EQ('0', buf[1]);
- ASSERT_EQ('1', buf[2]);
- ASSERT_EQ('2', buf[3]);
- ASSERT_EQ('3', buf[4]);
- ASSERT_EQ('4', buf[5]);
- ASSERT_EQ('\0', buf[6]);
+ ASSERT_STREQ("a01234", buf);
ASSERT_EQ('A', buf[7]);
ASSERT_EQ('A', buf[8]);
ASSERT_EQ('A', buf[9]);
@@ -329,13 +327,7 @@ TEST(string, strncat3) {
buf[1] = '\0';
char* res = strncat(buf, "0123456789", 5);
ASSERT_EQ(buf, res);
- ASSERT_EQ('a', buf[0]);
- ASSERT_EQ('0', buf[1]);
- ASSERT_EQ('1', buf[2]);
- ASSERT_EQ('2', buf[3]);
- ASSERT_EQ('3', buf[4]);
- ASSERT_EQ('4', buf[5]);
- ASSERT_EQ('\0', buf[6]);
+ ASSERT_STREQ("a01234", buf);
ASSERT_EQ('A', buf[7]);
ASSERT_EQ('A', buf[8]);
ASSERT_EQ('A', buf[9]);
@@ -348,16 +340,7 @@ TEST(string, strncat4) {
buf[1] = '\0';
char* res = strncat(buf, "01234567", 8);
ASSERT_EQ(buf, res);
- ASSERT_EQ('a', buf[0]);
- ASSERT_EQ('0', buf[1]);
- ASSERT_EQ('1', buf[2]);
- ASSERT_EQ('2', buf[3]);
- ASSERT_EQ('3', buf[4]);
- ASSERT_EQ('4', buf[5]);
- ASSERT_EQ('5', buf[6]);
- ASSERT_EQ('6', buf[7]);
- ASSERT_EQ('7', buf[8]);
- ASSERT_EQ('\0', buf[9]);
+ ASSERT_STREQ("a01234567", buf);
}
TEST(string, strncat5) {
@@ -367,16 +350,7 @@ TEST(string, strncat5) {
buf[1] = '\0';
char* res = strncat(buf, "01234567", 9);
ASSERT_EQ(buf, res);
- ASSERT_EQ('a', buf[0]);
- ASSERT_EQ('0', buf[1]);
- ASSERT_EQ('1', buf[2]);
- ASSERT_EQ('2', buf[3]);
- ASSERT_EQ('3', buf[4]);
- ASSERT_EQ('4', buf[5]);
- ASSERT_EQ('5', buf[6]);
- ASSERT_EQ('6', buf[7]);
- ASSERT_EQ('7', buf[8]);
- ASSERT_EQ('\0', buf[9]);
+ ASSERT_STREQ("a01234567", buf);
}
TEST(string, strchr_with_0) {
@@ -456,6 +430,32 @@ TEST(string, strcmp) {
}
}
+TEST(string, stpcpy) {
+ StringTestState<char> state(SMALL);
+ for (size_t j = 0; j < POS_ITER; j++) {
+ state.NewIteration();
+
+ size_t pos = random() % state.MAX_LEN;
+
+ memset(state.ptr1, '\2', pos);
+ state.ptr1[pos] = '\0';
+ state.ptr1[state.MAX_LEN - 1] = '\0';
+
+ memcpy(state.ptr, state.ptr1, state.MAX_LEN);
+
+ memset(state.ptr2, '\1', state.MAX_LEN);
+ state.ptr2[state.MAX_LEN - 1] = '\0';
+
+ memset(state.ptr + state.MAX_LEN, '\1', state.MAX_LEN);
+ memcpy(state.ptr + state.MAX_LEN, state.ptr1, pos + 1);
+ state.ptr[2 * state.MAX_LEN - 1] = '\0';
+
+ ASSERT_TRUE(stpcpy(state.ptr2, state.ptr1) == state.ptr2 + strlen(state.ptr1));
+ ASSERT_FALSE((memcmp(state.ptr1, state.ptr, state.MAX_LEN)) != 0 ||
+ (memcmp(state.ptr2, state.ptr + state.MAX_LEN, state.MAX_LEN) != 0));
+ }
+}
+
TEST(string, strcpy) {
StringTestState<char> state(SMALL);
for (size_t j = 0; j < POS_ITER; j++) {
@@ -482,7 +482,6 @@ TEST(string, strcpy) {
}
}
-
TEST(string, strlcat) {
#if defined(__BIONIC__)
StringTestState<char> state(SMALL);
@@ -614,30 +613,81 @@ TEST(string, strncmp) {
}
}
-TEST(string, strncpy) {
+TEST(string, stpncpy) {
StringTestState<char> state(SMALL);
for (size_t j = 0; j < ITER; j++) {
state.NewIteration();
- memset(state.ptr1, random() & 255, state.MAX_LEN);
- state.ptr1[random () % state.MAX_LEN] = '\0';
+ // Choose a random value to fill the string, except \0 (string terminator),
+ // or \1 (guarantees it's different from anything in ptr2).
+ memset(state.ptr1, (random() % 254) + 2, state.MAX_LEN);
+ // Choose a random size for our src buffer.
+ size_t ptr1_len = random() % state.MAX_LEN;
+ state.ptr1[ptr1_len] = '\0';
+ // Copy ptr1 into ptr, used to verify that ptr1 does not get modified.
memcpy(state.ptr, state.ptr1, state.MAX_LEN);
+ // Init ptr2 to a set value.
+ memset(state.ptr2, '\1', state.MAX_LEN);
+ // Choose a random amount of data to copy.
+ size_t copy_len = random() % state.MAX_LEN;
+
+ // Set the second half of ptr to the expected pattern in ptr2.
+ memset(state.ptr + state.MAX_LEN, '\1', state.MAX_LEN);
+ memcpy(state.ptr + state.MAX_LEN, state.ptr1, copy_len);
+ size_t expected_end;
+ if (copy_len > ptr1_len) {
+ memset(state.ptr + state.MAX_LEN + ptr1_len, '\0', copy_len - ptr1_len);
+ expected_end = ptr1_len;
+ } else {
+ expected_end = copy_len;
+ }
+
+ ASSERT_EQ(state.ptr2 + expected_end, stpncpy(state.ptr2, state.ptr1, copy_len));
+
+ // Verify ptr1 was not modified.
+ ASSERT_EQ(0, memcmp(state.ptr1, state.ptr, state.MAX_LEN));
+ // Verify ptr2 contains the expected data.
+ ASSERT_EQ(0, memcmp(state.ptr2, state.ptr + state.MAX_LEN, state.MAX_LEN));
+ }
+}
+
+TEST(string, strncpy) {
+ StringTestState<char> state(SMALL);
+ for (size_t j = 0; j < ITER; j++) {
+ state.NewIteration();
+
+ // Choose a random value to fill the string, except \0 (string terminator),
+ // or \1 (guarantees it's different from anything in ptr2).
+ memset(state.ptr1, (random() % 254) + 2, state.MAX_LEN);
+ // Choose a random size for our src buffer.
+ size_t ptr1_len = random() % state.MAX_LEN;
+ state.ptr1[ptr1_len] = '\0';
+ // Copy ptr1 into ptr, used to verify that ptr1 does not get modified.
+ memcpy(state.ptr, state.ptr1, state.MAX_LEN);
+ // Init ptr2 to a set value.
memset(state.ptr2, '\1', state.MAX_LEN);
- size_t pos;
- if (memchr(state.ptr1, 0, state.MAX_LEN)) {
- pos = strlen(state.ptr1);
+ // Choose a random amount of data to copy.
+ size_t copy_len = random() % state.MAX_LEN;
+
+ // Set the second half of ptr to the expected pattern in ptr2.
+ memset(state.ptr + state.MAX_LEN, '\1', state.MAX_LEN);
+ memcpy(state.ptr + state.MAX_LEN, state.ptr1, copy_len);
+ size_t expected_end;
+ if (copy_len > ptr1_len) {
+ memset(state.ptr + state.MAX_LEN + ptr1_len, '\0', copy_len - ptr1_len);
+ expected_end = ptr1_len;
} else {
- pos = state.MAX_LEN - 1;
+ expected_end = copy_len;
}
- memset(state.ptr + state.MAX_LEN, '\0', state.MAX_LEN);
- memcpy(state.ptr + state.MAX_LEN, state.ptr1, pos + 1);
+ ASSERT_EQ(state.ptr2 + expected_end, stpncpy(state.ptr2, state.ptr1, copy_len));
- ASSERT_TRUE(strncpy(state.ptr2, state.ptr1, state.MAX_LEN) == state.ptr2);
- ASSERT_FALSE(memcmp(state.ptr1, state.ptr, state.MAX_LEN) != 0 ||
- memcmp(state.ptr2, state.ptr + state.MAX_LEN, state.MAX_LEN) != 0);
+ // Verify ptr1 was not modified.
+ ASSERT_EQ(0, memcmp(state.ptr1, state.ptr, state.MAX_LEN));
+ // Verify ptr2 contains the expected data.
+ ASSERT_EQ(0, memcmp(state.ptr2, state.ptr + state.MAX_LEN, state.MAX_LEN));
}
}
@@ -966,6 +1016,25 @@ TEST(string, strcpy_overread) {
RunSrcDstBufferOverreadTest(DoStrcpyTest);
}
+static void DoStpcpyTest(uint8_t* src, uint8_t* dst, size_t len) {
+ if (len >= 1) {
+ memset(src, (32 + (len % 96)), len - 1);
+ src[len-1] = '\0';
+ memset(dst, 0, len);
+ ASSERT_EQ(dst+len-1, reinterpret_cast<uint8_t*>(stpcpy(reinterpret_cast<char*>(dst),
+ reinterpret_cast<char*>(src))));
+ ASSERT_TRUE(memcmp(src, dst, len) == 0);
+ }
+}
+
+TEST(string, stpcpy_align) {
+ RunSrcDstBufferAlignTest(LARGE, DoStpcpyTest);
+}
+
+TEST(string, stpcpy_overread) {
+ RunSrcDstBufferOverreadTest(DoStpcpyTest);
+}
+
// Use our own incrementer to cut down on the total number of calls.
static size_t LargeSetIncrement(size_t len) {
if (len >= 4096) {
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-17 00:40:57 +0000