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//===-- sanitizer_printf_test.cc ------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Tests for sanitizer_printf.cc
//
//===----------------------------------------------------------------------===//
#include "sanitizer_common/sanitizer_common.h"
#include "sanitizer_common/sanitizer_libc.h"
#include "gtest/gtest.h"
#include <string.h>
#include <limits.h>
namespace __sanitizer {
TEST(Printf, Basic) {
char buf[1024];
uptr len = internal_snprintf(buf, sizeof(buf),
"a%db%zdc%ue%zuf%xh%zxq%pe%sr",
(int)-1, (long)-2, // NOLINT
(unsigned)-4, (unsigned long)5, // NOLINT
(unsigned)10, (unsigned long)11, // NOLINT
(void*)0x123, "_string_");
EXPECT_EQ(len, strlen(buf));
EXPECT_STREQ("a-1b-2c4294967292e5fahbq"
"0x000000000123e_string_r", buf);
}
TEST(Printf, OverflowStr) {
char buf[] = "123456789";
uptr len = internal_snprintf(buf, 4, "%s", "abcdef"); // NOLINT
EXPECT_EQ(len, (uptr)6);
EXPECT_STREQ("abc", buf);
EXPECT_EQ(buf[3], 0);
EXPECT_EQ(buf[4], '5');
EXPECT_EQ(buf[5], '6');
EXPECT_EQ(buf[6], '7');
EXPECT_EQ(buf[7], '8');
EXPECT_EQ(buf[8], '9');
EXPECT_EQ(buf[9], 0);
}
TEST(Printf, OverflowInt) {
char buf[] = "123456789";
internal_snprintf(buf, 4, "%d", -123456789); // NOLINT
EXPECT_STREQ("-12", buf);
EXPECT_EQ(buf[3], 0);
EXPECT_EQ(buf[4], '5');
EXPECT_EQ(buf[5], '6');
EXPECT_EQ(buf[6], '7');
EXPECT_EQ(buf[7], '8');
EXPECT_EQ(buf[8], '9');
EXPECT_EQ(buf[9], 0);
}
TEST(Printf, OverflowUint) {
char buf[] = "123456789";
internal_snprintf(buf, 4, "a%zx", (unsigned long)0x123456789); // NOLINT
EXPECT_STREQ("a12", buf);
EXPECT_EQ(buf[3], 0);
EXPECT_EQ(buf[4], '5');
EXPECT_EQ(buf[5], '6');
EXPECT_EQ(buf[6], '7');
EXPECT_EQ(buf[7], '8');
EXPECT_EQ(buf[8], '9');
EXPECT_EQ(buf[9], 0);
}
TEST(Printf, OverflowPtr) {
char buf[] = "123456789";
internal_snprintf(buf, 4, "%p", (void*)0x123456789); // NOLINT
EXPECT_STREQ("0x0", buf);
EXPECT_EQ(buf[3], 0);
EXPECT_EQ(buf[4], '5');
EXPECT_EQ(buf[5], '6');
EXPECT_EQ(buf[6], '7');
EXPECT_EQ(buf[7], '8');
EXPECT_EQ(buf[8], '9');
EXPECT_EQ(buf[9], 0);
}
template<typename T>
static void TestMinMax(const char *fmt, T min, T max) {
char buf[1024];
uptr len = internal_snprintf(buf, sizeof(buf), fmt, min, max);
char buf2[1024];
snprintf(buf2, sizeof(buf2), fmt, min, max);
EXPECT_EQ(len, strlen(buf));
EXPECT_STREQ(buf2, buf);
}
TEST(Printf, MinMax) {
TestMinMax<int>("%d-%d", INT_MIN, INT_MAX); // NOLINT
TestMinMax<long>("%zd-%zd", LONG_MIN, LONG_MAX); // NOLINT
TestMinMax<unsigned>("%u-%u", 0, UINT_MAX); // NOLINT
TestMinMax<unsigned long>("%zu-%zu", 0, ULONG_MAX); // NOLINT
TestMinMax<unsigned>("%x-%x", 0, UINT_MAX); // NOLINT
TestMinMax<unsigned long>("%zx-%zx", 0, ULONG_MAX); // NOLINT
}
} // namespace __sanitizer
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