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5056215a1f
upx/src/check/dt_check.cpp
Markus F.X.J. Oberhumer 5056215a1f all: more assorted cleanups
2023-01-29 11:39:57 +01:00

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/* dt_check.cpp -- doctest check
This file is part of the UPX executable compressor.
Copyright (C) 1996-2023 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
UPX and the UCL library are free software; you can redistribute them
and/or modify them under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of
the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
*/
#include "../conf.h"
/*************************************************************************
// upx_doctest_check()
**************************************************************************/
int upx_doctest_check(int argc, char **argv) {
#if defined(DOCTEST_CONFIG_DISABLE)
UNUSED(argc);
UNUSED(argv);
return 0;
#else
const char *e = getenv("UPX_DEBUG_DOCTEST_DISABLE");
if (e && e[0] && strcmp(e, "0") != 0)
return 0;
bool minimal = true; // only show failing tests
bool duration = false; // show timings
bool success = false; // show all tests
#if DEBUG
minimal = false;
#endif
e = getenv("UPX_DEBUG_DOCTEST_VERBOSE");
if (e && e[0]) {
minimal = false;
if (strcmp(e, "0") == 0) {
minimal = true;
} else if (strcmp(e, "2") == 0) {
duration = true;
} else if (strcmp(e, "3") == 0) {
duration = true;
success = true;
}
}
doctest::Context context;
if (minimal)
context.setOption("dt-minimal", true);
if (duration)
context.setOption("dt-duration", true);
if (success)
context.setOption("dt-success", true);
// this requires that main_get_options() understands "--dt-XXX" options
if (argc > 0 && argv != nullptr)
context.applyCommandLine(argc, argv);
int r = context.run();
if (r != 0)
return 1;
if (context.shouldExit())
return 2;
return 0;
#endif // DOCTEST_CONFIG_DISABLE
}
int upx_doctest_check() { return upx_doctest_check(0, nullptr); }
/*************************************************************************
// compile-time checks
**************************************************************************/
ACC_COMPILE_TIME_ASSERT_HEADER((std::is_same<short, upx_int16_t>::value))
ACC_COMPILE_TIME_ASSERT_HEADER((std::is_same<unsigned short, upx_uint16_t>::value))
ACC_COMPILE_TIME_ASSERT_HEADER((std::is_same<int, upx_int32_t>::value))
ACC_COMPILE_TIME_ASSERT_HEADER((std::is_same<unsigned, upx_uint32_t>::value))
ACC_COMPILE_TIME_ASSERT_HEADER((std::is_same<long long, upx_int64_t>::value))
ACC_COMPILE_TIME_ASSERT_HEADER((std::is_same<unsigned long long, upx_uint64_t>::value))
ACC_COMPILE_TIME_ASSERT_HEADER(no_bswap16(0x04030201) == 0x0201)
ACC_COMPILE_TIME_ASSERT_HEADER(no_bswap32(0x04030201) == 0x04030201)
ACC_COMPILE_TIME_ASSERT_HEADER(no_bswap64(0x0807060504030201ull) == 0x0807060504030201ull)
#if !(ACC_CC_MSC)
ACC_COMPILE_TIME_ASSERT_HEADER(bswap16(0x04030201) == 0x0102)
ACC_COMPILE_TIME_ASSERT_HEADER(bswap32(0x04030201) == 0x01020304)
ACC_COMPILE_TIME_ASSERT_HEADER(bswap64(0x0807060504030201ull) == 0x0102030405060708ull)
#endif
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_len("") == 0)
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_len("a") == 1)
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_eq("", ""))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_eq("a", ""))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_eq("", "a"))
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_eq("abc", "abc"))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_eq("ab", "abc"))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_eq("abc", "ab"))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_lt("", ""))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_lt("a", ""))
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_lt("", "a"))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_lt("abc", "abc"))
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_lt("ab", "abc"))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_lt("abc", "ab"))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_lt("abc", "aba"))
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_lt("abc", "abz"))
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_ne("abc", "abz"))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_gt("abc", "abz"))
ACC_COMPILE_TIME_ASSERT_HEADER(!compile_time::string_ge("abc", "abz"))
ACC_COMPILE_TIME_ASSERT_HEADER(compile_time::string_le("abc", "abz"))
ACC_COMPILE_TIME_ASSERT_HEADER(CHAR_BIT == 8)
#if 0 // does not work with MSVC
#if '\0' - 1 < 0
ACC_COMPILE_TIME_ASSERT_HEADER(CHAR_MAX == 127)
#else
ACC_COMPILE_TIME_ASSERT_HEADER(CHAR_MAX == 255)
#endif
#if L'\0' - 1 < 0
ACC_COMPILE_TIME_ASSERT_HEADER((wchar_t) -1 < 0)
#else
ACC_COMPILE_TIME_ASSERT_HEADER((wchar_t) -1 > 0)
#endif
#endif
/*************************************************************************
// upx_compiler_sanity_check()
// assert a sane architecture and compiler
**************************************************************************/
namespace {
template <class T>
struct TestBELE {
__acc_static_noinline bool test(void) {
// POD checks
{
COMPILE_TIME_ASSERT(std::is_standard_layout<T>::value)
COMPILE_TIME_ASSERT(std::is_trivial<T>::value)
// extra checks, these are probably implied by std::is_trivial:
COMPILE_TIME_ASSERT(std::is_nothrow_default_constructible<T>::value)
COMPILE_TIME_ASSERT(std::is_trivially_copyable<T>::value)
COMPILE_TIME_ASSERT(std::is_trivially_default_constructible<T>::value)
}
// alignment checks
{
COMPILE_TIME_ASSERT_ALIGNED1(T)
struct alignas(1) test1_t {
char a;
T b;
};
struct alignas(1) test2_t {
char a;
T b[3];
};
COMPILE_TIME_ASSERT_ALIGNED1(test1_t)
COMPILE_TIME_ASSERT_ALIGNED1(test2_t)
test1_t t1[7];
test2_t t2[7];
COMPILE_TIME_ASSERT(sizeof(test1_t) == 1 + sizeof(T))
COMPILE_TIME_ASSERT(sizeof(t1) == 7 + 7 * sizeof(T))
COMPILE_TIME_ASSERT(sizeof(test2_t) == 1 + 3 * sizeof(T))
COMPILE_TIME_ASSERT(sizeof(t2) == 7 + 21 * sizeof(T))
UNUSED(t1);
UNUSED(t2);
}
#if 1
// arithmetic checks
{
T allbits;
allbits = 0;
allbits += 1;
allbits -= 2;
T v1;
v1 = 1;
v1 *= 2;
v1 -= 1;
T v2;
v2 = 1;
assert((v1 == v2));
assert(!(v1 != v2));
assert((v1 <= v2));
assert((v1 >= v2));
assert(!(v1 < v2));
assert(!(v1 > v2));
v2 ^= allbits;
assert(!(v1 == v2));
assert((v1 != v2));
assert((v1 <= v2));
assert(!(v1 >= v2));
assert((v1 < v2));
assert(!(v1 > v2));
v2 += 2;
assert(v1 == 1);
assert(v2 == 0);
v1 <<= 1;
v1 |= v2;
v1 >>= 1;
v2 &= v1;
v2 /= v1;
v2 *= v1;
assert(v1 == 1);
assert(v2 == 0);
if ((v1 ^ v2) != 1)
return false;
}
#endif
return true;
}
};
template <class A, class B>
struct TestNoAliasingStruct {
__acc_static_noinline bool test(A *a, B *b) {
*a = 0;
*b = 0;
*b -= 3;
return *a != 0;
}
};
template <class A, class B>
__acc_static_forceinline bool testNoAliasing(A *a, B *b) {
return TestNoAliasingStruct<A, B>::test(a, b);
}
template <class T>
struct TestIntegerWrap {
static inline bool inc(T x) { return x + 1 > x; }
static inline bool dec(T x) { return x - 1 < x; }
};
} // namespace
#define ACC_WANT_ACC_CHK_CH 1
#undef ACCCHK_ASSERT
#include "../miniacc.h"
void upx_compiler_sanity_check(void) {
#define ACC_WANT_ACC_CHK_CH 1
#undef ACCCHK_ASSERT
#define ACCCHK_ASSERT(expr) ACC_COMPILE_TIME_ASSERT(expr)
#include "../miniacc.h"
#undef ACCCHK_ASSERT
COMPILE_TIME_ASSERT(sizeof(char) == 1)
COMPILE_TIME_ASSERT(sizeof(short) == 2)
COMPILE_TIME_ASSERT(sizeof(int) == 4)
COMPILE_TIME_ASSERT(sizeof(long) >= 4)
COMPILE_TIME_ASSERT(sizeof(void *) >= 4)
COMPILE_TIME_ASSERT(sizeof(BE16) == 2)
COMPILE_TIME_ASSERT(sizeof(BE32) == 4)
COMPILE_TIME_ASSERT(sizeof(BE64) == 8)
COMPILE_TIME_ASSERT(sizeof(LE16) == 2)
COMPILE_TIME_ASSERT(sizeof(LE32) == 4)
COMPILE_TIME_ASSERT(sizeof(LE64) == 8)
COMPILE_TIME_ASSERT_ALIGNED1(BE16)
COMPILE_TIME_ASSERT_ALIGNED1(BE32)
COMPILE_TIME_ASSERT_ALIGNED1(BE64)
COMPILE_TIME_ASSERT_ALIGNED1(LE16)
COMPILE_TIME_ASSERT_ALIGNED1(LE32)
COMPILE_TIME_ASSERT_ALIGNED1(LE64)
COMPILE_TIME_ASSERT(sizeof(UPX_VERSION_STRING4) == 4 + 1)
assert(strlen(UPX_VERSION_STRING4) == 4);
COMPILE_TIME_ASSERT(sizeof(UPX_VERSION_YEAR) == 4 + 1)
assert(strlen(UPX_VERSION_YEAR) == 4);
assert(memcmp(UPX_VERSION_DATE_ISO, UPX_VERSION_YEAR, 4) == 0);
assert(memcmp(&UPX_VERSION_DATE[sizeof(UPX_VERSION_DATE) - 1 - 4], UPX_VERSION_YEAR, 4) == 0);
if (gitrev[0]) {
size_t revlen = strlen(gitrev);
if (strncmp(gitrev, "ERROR", 5) == 0) {
assert(revlen == 5 || revlen == 6);
} else {
assert(revlen == 12 || revlen == 13);
}
if (revlen == 6 || revlen == 13) {
assert(gitrev[revlen - 1] == '+');
}
}
assert(UPX_RSIZE_MAX_MEM == 805306368);
#if 1
assert(TestBELE<LE16>::test());
assert(TestBELE<LE32>::test());
assert(TestBELE<LE64>::test());
assert(TestBELE<BE16>::test());
assert(TestBELE<BE32>::test());
assert(TestBELE<BE64>::test());
{
alignas(16) static const unsigned char dd[32] = {
0, 0, 0, 0, 0, 0, 0, 0xff, 0xfe, 0xfd, 0xfc, 0xfb, 0xfa, 0xf9, 0xf8, 0,
0, 0, 0, 0x7f, 0x7e, 0x7d, 0x7c, 0x7b, 0x7a, 0x79, 0x78, 0, 0, 0, 0, 0};
const unsigned char *d;
const N_BELE_RTP::AbstractPolicy *bele;
d = dd + 7;
assert(upx_adler32(d, 4) == 0x09f003f7);
assert(upx_adler32(d, 4, 0) == 0x09ec03f6);
assert(upx_adler32(d, 4, 1) == 0x09f003f7);
bele = &N_BELE_RTP::be_policy;
assert(get_be16(d) == 0xfffe);
assert(bele->get16(d) == 0xfffe);
assert(get_be16_signed(d) == -2);
assert(get_be24(d) == 0xfffefd);
assert(bele->get24(d) == 0xfffefd);
assert(get_be24_signed(d) == -259);
assert(get_be32(d) == 0xfffefdfc);
assert(bele->get32(d) == 0xfffefdfc);
assert(get_be32_signed(d) == -66052);
bele = &N_BELE_RTP::le_policy;
assert(get_le16(d) == 0xfeff);
assert(bele->get16(d) == 0xfeff);
assert(get_le16_signed(d) == -257);
assert(get_le24(d) == 0xfdfeff);
assert(bele->get24(d) == 0xfdfeff);
assert(get_le24_signed(d) == -131329);
assert(get_le32(d) == 0xfcfdfeff);
assert(bele->get32(d) == 0xfcfdfeff);
assert(get_le32_signed(d) == -50462977);
assert(get_le64_signed(d) == -506097522914230529LL);
assert(find_be16(d, 2, 0xfffe) == 0);
assert(find_le16(d, 2, 0xfeff) == 0);
assert(find_be32(d, 4, 0xfffefdfc) == 0);
assert(find_le32(d, 4, 0xfcfdfeff) == 0);
d += 12;
assert(get_be16_signed(d) == 32638);
assert(get_be24_signed(d) == 8355453);
assert(get_be32_signed(d) == 2138996092);
assert(get_be64_signed(d) == 9186918263483431288LL);
}
{
unsigned dd;
void *const d = &dd;
dd = ne32_to_le32(0xf7f6f5f4);
assert(get_le26(d) == 0x03f6f5f4);
set_le26(d, 0);
assert(get_le26(d) == 0);
assert(dd == ne32_to_le32(0xf4000000));
set_le26(d, 0xff020304);
assert(get_le26(d) == 0x03020304);
assert(dd == ne32_to_le32(0xf7020304));
}
{
upx_uint16_t a;
upx_uint32_t b;
upx_uint64_t c;
set_ne16(&a, 0x04030201); // ignore upper bits
set_ne32(&b, 0x04030201);
set_ne64(&c, 0x0807060504030201ull);
assert(a == 0x0201);
assert(b == 0x04030201);
assert(c == 0x0807060504030201ull);
assert(get_ne16(&a) == 0x0201);
assert(get_ne32(&b) == 0x04030201);
assert(get_ne64(&c) == 0x0807060504030201ull);
}
#endif
union {
short v_short;
int v_int;
long v_long;
long long v_llong;
BE16 b16;
BE32 b32;
BE64 b64;
LE16 l16;
LE32 l32;
LE64 l64;
} u;
assert(testNoAliasing(&u.v_short, &u.b32));
assert(testNoAliasing(&u.v_short, &u.l32));
assert(testNoAliasing(&u.v_int, &u.b64));
assert(testNoAliasing(&u.v_int, &u.l64));
// check working -fno-strict-aliasing
assert(testNoAliasing(&u.v_short, &u.v_int));
assert(testNoAliasing(&u.v_int, &u.v_long));
assert(testNoAliasing(&u.v_int, &u.v_llong));
assert(testNoAliasing(&u.v_long, &u.v_llong));
assert(TestIntegerWrap<unsigned>::inc(0));
assert(!TestIntegerWrap<unsigned>::inc(UINT_MAX));
assert(TestIntegerWrap<unsigned>::dec(1));
assert(!TestIntegerWrap<unsigned>::dec(0));
// check working -fno-strict-overflow
assert(TestIntegerWrap<int>::inc(0));
assert(!TestIntegerWrap<int>::inc(INT_MAX));
assert(TestIntegerWrap<int>::dec(0));
assert(!TestIntegerWrap<int>::dec(INT_MIN));
}
/*************************************************************************
// some doctest test cases
**************************************************************************/
TEST_CASE("acc_vget") {
CHECK_EQ(acc_vget_int(0, 0), 0);
CHECK_EQ(acc_vget_long(1, -1), 1);
CHECK_EQ(acc_vget_acc_int64l_t(2, 1), 2);
CHECK_EQ(acc_vget_acc_hvoid_p(nullptr, 0), nullptr);
}
TEST_CASE("working -fno-strict-aliasing") {
bool ok;
long v = 0;
short *ps = ACC_STATIC_CAST(short *, acc_vget_acc_hvoid_p(&v, 0));
int *pi = ACC_STATIC_CAST(int *, acc_vget_acc_hvoid_p(&v, 0));
long *pl = ACC_STATIC_CAST(long *, acc_vget_acc_hvoid_p(&v, 0));
*ps = 0;
*pl = -1;
ok = *ps == -1;
CHECK(ok);
*pi = 0;
*pl = -1;
ok = *pi == -1;
CHECK(ok);
*pl = 0;
*ps = -1;
ok = *pl != 0;
CHECK(ok);
*pl = 0;
*pi = -1;
ok = *pl != 0;
CHECK(ok);
}
TEST_CASE("working -fno-strict-overflow") {
CHECK_EQ(acc_vget_int(INT_MAX, 0) + 1, INT_MIN);
CHECK_EQ(acc_vget_int(INT_MIN, 0) - 1, INT_MAX);
CHECK_EQ(acc_vget_long(LONG_MAX, 0) + 1, LONG_MIN);
CHECK_EQ(acc_vget_long(LONG_MIN, 0) - 1, LONG_MAX);
bool ok;
int i;
i = INT_MAX;
i += 1;
ok = i == INT_MIN;
CHECK(ok);
i = INT_MIN;
i -= 1;
ok = i == INT_MAX;
CHECK(ok);
}
TEST_CASE("libc snprintf") {
// runtime check that Win32/MinGW <stdio.h> works as expected
char buf[64];
long long ll = acc_vget_int(-1, 0);
unsigned long long llu = (unsigned long long) ll;
snprintf(buf, sizeof(buf), "%d.%ld.%lld.%u.%lu.%llu", -3, -2L, ll, 3U, 2LU, llu);
CHECK_EQ(strcmp(buf, "-3.-2.-1.3.2.18446744073709551615"), 0);
intmax_t im = ll;
uintmax_t um = llu;
snprintf(buf, sizeof(buf), "%d.%d.%d.%d.%d.%d.%d.%d.%d.%jd", -4, 0, 0, 0, 0, 0, 0, 0, 4, im);
CHECK_EQ(strcmp(buf, "-4.0.0.0.0.0.0.0.4.-1"), 0);
snprintf(buf, sizeof(buf), "%d.%d.%d.%d.%d.%d.%d.%d.%d.%ju", -5, 0, 0, 0, 0, 0, 0, 0, 5, um);
CHECK_EQ(strcmp(buf, "-5.0.0.0.0.0.0.0.5.18446744073709551615"), 0);
snprintf(buf, sizeof(buf), "%d.%d.%d.%d.%d.%d.%d.%d.%d.%jx", -6, 0, 0, 0, 0, 0, 0, 0, 6, um);
CHECK_EQ(strcmp(buf, "-6.0.0.0.0.0.0.0.6.ffffffffffffffff"), 0);
snprintf(buf, sizeof(buf), "%d.%d.%d.%d.%d.%d.%d.%d.%d.%#jx", -7, 0, 0, 0, 0, 0, 0, 0, 7, um);
CHECK_EQ(strcmp(buf, "-7.0.0.0.0.0.0.0.7.0xffffffffffffffff"), 0);
}
/* vim:set ts=4 sw=4 et: */
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