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# python -m pytest test-other.py
import os
import sys
import pytest
from testutils import cppcheck
@pytest.mark.timeout(10)
def test_slow_array_many_floats(tmpdir):
# 11649
# cppcheck valueflow takes a long time when an array has many floats
filename = os.path.join(tmpdir, 'hang.c')
with open(filename, 'wt') as f:
f.write("const float f[] = {\n")
for _ in range(20000):
f.write(' 13.6f,\n')
f.write("};\n")
cppcheck([filename]) # should not take more than ~1 second
@pytest.mark.timeout(10)
def test_slow_array_many_strings(tmpdir):
# 11901
# cppcheck valueflow takes a long time when analyzing a file with many strings
filename = os.path.join(tmpdir, 'hang.c')
with open(filename, 'wt') as f:
f.write("const char *strings[] = {\n")
for _ in range(20000):
f.write(' "abc",\n')
f.write("};\n")
cppcheck([filename]) # should not take more than ~1 second
@pytest.mark.timeout(10)
def test_slow_long_line(tmpdir):
# simplecpp #314
filename = os.path.join(tmpdir, 'hang.c')
with open(filename, 'wt') as f:
f.write("#define A() static const int a[] = {\\\n")
for _ in range(5000):
f.write(" -123, 456, -789,\\\n")
f.write("};\n")
cppcheck([filename]) # should not take more than ~1 second
@pytest.mark.timeout(60)
def test_slow_large_constant_expression(tmpdir):
# 12182
filename = os.path.join(tmpdir, 'hang.c')
with open(filename, 'wt') as f:
f.write("""
#define FLAG1 0
#define FLAG2 0
#define FLAG3 0
#define FLAG4 0
#define FLAG5 0
#define FLAG6 0
#define FLAG7 0
#define FLAG8 0
#define FLAG9 0
#define FLAG10 0
#define FLAG11 0
#define FLAG12 0
#define FLAG13 0
#define FLAG14 0
#define FLAG15 0
#define FLAG16 0
#define FLAG17 0
#define FLAG18 0
#define FLAG19 0
#define FLAG20 0
#define FLAG21 0
#define FLAG22 0
#define FLAG23 0
#define FLAG24 0
#define maxval(x, y) ((x) > (y) ? (x) : (y))
#define E_SAMPLE_SIZE maxval( FLAG1, \
maxval( FLAG2, \
maxval( FLAG3, \
maxval( FLAG4, \
maxval( FLAG5, \
maxval( FLAG6, \
maxval( FLAG7, \
maxval( FLAG8, \
maxval( FLAG9, \
maxval( FLAG10, \
maxval( FLAG11, \
maxval( FLAG12, \
maxval( FLAG13, \
maxval( FLAG14, \
FLAG15 ))))))))))))))
#define SAMPLE_SIZE maxval( E_SAMPLE_SIZE, \
maxval( sizeof(st), \
maxval( FLAG16, \
maxval( FLAG17, \
maxval( FLAG18, \
maxval( FLAG19, \
maxval( FLAG20, \
maxval( FLAG21, \
maxval( FLAG22, \
maxval( FLAG23, \
FLAG24 ))))))))))
typedef struct {
int n;
} st;
x = SAMPLE_SIZE;
""")
cppcheck([filename])
@pytest.mark.timeout(10)
def test_slow_exprid(tmpdir):
# 11885
filename = os.path.join(tmpdir, 'hang.c')
with open(filename, 'wt') as f:
f.write("""
int foo(int a, int b)
{
#define A0(a, b) ((a) + (b))
#define A1(a, b) ((a) > (b)) ? A0((a) - (b), (b)) : A0((b) - (a), (a))
#define A2(a, b) ((a) > (b)) ? A1((a) - (b), (b)) : A1((b) - (a), (a))
#define A3(a, b) ((a) > (b)) ? A2((a) - (b), (b)) : A2((b) - (a), (a))
#define A4(a, b) ((a) > (b)) ? A3((a) - (b), (b)) : A3((b) - (a), (a))
#define A5(a, b) ((a) > (b)) ? A4((a) - (b), (b)) : A4((b) - (a), (a))
#define A6(a, b) ((a) > (b)) ? A5((a) - (b), (b)) : A5((b) - (a), (a))
#define A7(a, b) ((a) > (b)) ? A6((a) - (b), (b)) : A6((b) - (a), (a))
#define A8(a, b) ((a) > (b)) ? A7((a) - (b), (b)) : A7((b) - (a), (a))
#define A9(a, b) ((a) > (b)) ? A8((a) - (b), (b)) : A8((b) - (a), (a))
#define A10(a, b) ((a) > (b)) ? A9((a) - (b), (b)) : A9((b) - (a), (a))
#define A11(a, b) ((a) > (b)) ? A10((a) - (b), (b)) : A10((b) - (a), (a))
return A8(a, b);
}
""")
my_env = os.environ.copy()
my_env["DISABLE_VALUEFLOW"] = "1"
cppcheck([filename], env=my_env)
@pytest.mark.timeout(10)
def test_slow_initlist_varchanged(tmpdir):
# #12235
filename = os.path.join(tmpdir, 'hang.cpp')
with open(filename, 'wt') as f:
f.write(r"""
struct T {
int* q;
int nx, ny;
};
struct S {
void f();
int n;
T* p;
};
#define ROW 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ,
#define ROW4 ROW ROW ROW ROW
#define ROW16 ROW4 ROW4 ROW4 ROW4
#define ROW64 ROW16 ROW16 ROW16 ROW16
#define ROW256 ROW64 ROW64 ROW64 ROW64
#define ROW1K ROW256 ROW256 ROW256 ROW256
#define ROW4K ROW1K ROW1K ROW1K ROW1K
const int A[] = {
ROW4K
};
void S::f() {
for (int i = 0; i < n; ++i) {
T& t = p[i];
for (int y = 0; y < t.ny; y += 4) {
int* row0 = t.q + y * t.nx;
for (int x = 0; x < t.nx; x += 4) {
int s[16] = {};
memcpy(row0, &s[0], 4);
row0 += 4;
}
}
}
}""")
cppcheck([filename]) # should not take more than ~1 second
@pytest.mark.timeout(10)
def test_slow_many_scopes(tmpdir):
# #12038
filename = os.path.join(tmpdir, 'hang.cpp')
with open(filename, 'wt') as f:
f.write(r"""
#define BLOCK {\
char buf[sizeof("x") + 5 * 3 + 16];\
int rc;\
memset(buf, cmp[0], sizeof buf);\
rc = sprintf(buf + 5, "x");\
assert(rc == sizeof("x") - 1);\
assert(memcmp(buf, cmp, 5) == 0);\
if ((rc) >= 0) {\
assert(memcmp(buf + 5, ("x"), (rc)) == 0);\
assert(buf[5 + (rc)] == '\0');\
}\
assert(memcmp(buf + 5 + (rc) + 1, cmp, 5) == 0);\
}
#define BLOCK2 BLOCK BLOCK
#define BLOCK4 BLOCK2 BLOCK2
#define BLOCK8 BLOCK4 BLOCK4
#define BLOCK16 BLOCK8 BLOCK8
#define BLOCK32 BLOCK16 BLOCK16
#define BLOCK64 BLOCK32 BLOCK32
int main() {
char cmp[5];
memset(cmp, '\376', sizeof cmp);
BLOCK64
return EXIT_SUCCESS;
}""")
cppcheck([filename]) # should not take more than ~1 second
@pytest.mark.skipif(sys.platform == 'darwin', reason='GitHub macOS runners are too slow')
@pytest.mark.timeout(20)
def test_crash_array_in_namespace(tmpdir):
# 12847
filename = os.path.join(tmpdir, 'hang.cpp')
with open(filename, 'wt') as f:
f.write(r"""
#define ROW A, A, A, A, A, A, A, A,
#define ROW8 ROW ROW ROW ROW ROW ROW ROW ROW
#define ROW64 ROW8 ROW8 ROW8 ROW8 ROW8 ROW8 ROW8 ROW8
#define ROW512 ROW64 ROW64 ROW64 ROW64 ROW64 ROW64 ROW64 ROW64
#define ROW4096 ROW512 ROW512 ROW512 ROW512 ROW512 ROW512 ROW512 ROW512
namespace N {
static const char A = 'a';
const char a[] = {
ROW4096 ROW4096 ROW4096 ROW4096
};
}""")
cppcheck([filename]) # should not take more than ~5 seconds
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