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// RUN: %clang_analyze_cc1 -analyzer-checker=debug.ExprInspection,core.builtin -analyzer-config aggressive-binary-operation-simplification=true -verify %s
void clang_analyzer_eval(int);
void exit(int);
#define UINT_MIN (0U)
#define UINT_MAX (~UINT_MIN)
#define UINT_MID (UINT_MAX / 2 + 1)
#define INT_MAX (UINT_MAX & (UINT_MAX >> 1))
#define INT_MIN (UINT_MAX & ~(UINT_MAX >> 1))
extern void __assert_fail (__const char *__assertion, __const char *__file,
unsigned int __line, __const char *__function)
__attribute__ ((__noreturn__));
#define assert(expr) \
((expr) ? (void)(0) : __assert_fail (#expr, __FILE__, __LINE__, __func__))
void assert_in_range(int x) {
assert(x <= ((int)INT_MAX / 4));
assert(x >= -(((int)INT_MAX) / 4));
}
void assert_in_wide_range(int x) {
assert(x <= ((int)INT_MAX / 2));
assert(x >= -(((int)INT_MAX) / 2));
}
void assert_in_range_2(int m, int n) {
assert_in_range(m);
assert_in_range(n);
}
void equal(int m, int n) {
assert_in_range_2(m, n);
if (m != n)
return;
assert_in_wide_range(m - n);
clang_analyzer_eval(n == m); // expected-warning{{TRUE}}
}
void non_equal(int m, int n) {
assert_in_range_2(m, n);
if (m == n)
return;
assert_in_wide_range(m - n);
clang_analyzer_eval(n != m); // expected-warning{{TRUE}}
}
void less_or_equal(int m, int n) {
assert_in_range_2(m, n);
if (m < n)
return;
assert_in_wide_range(m - n);
clang_analyzer_eval(n <= m); // expected-warning{{TRUE}}
}
void less(int m, int n) {
assert_in_range_2(m, n);
if (m <= n)
return;
assert_in_wide_range(m - n);
clang_analyzer_eval(n < m); // expected-warning{{TRUE}}
}
void greater_or_equal(int m, int n) {
assert_in_range_2(m, n);
if (m > n)
return;
assert_in_wide_range(m - n);
clang_analyzer_eval(n >= m); // expected-warning{{TRUE}}
}
void greater(int m, int n) {
assert_in_range_2(m, n);
if (m >= n)
return;
assert_in_wide_range(m - n);
clang_analyzer_eval(n > m); // expected-warning{{TRUE}}
}
void negate_positive_range(int m, int n) {
if (m - n <= 0)
return;
clang_analyzer_eval(n - m < 0); // expected-warning{{TRUE}}
clang_analyzer_eval(n - m > INT_MIN); // expected-warning{{TRUE}}
clang_analyzer_eval(n - m == INT_MIN); // expected-warning{{FALSE}}
}
void negate_int_min(int m, int n) {
if (m - n != INT_MIN)
return;
clang_analyzer_eval(n - m == INT_MIN); // expected-warning{{TRUE}}
}
void negate_mixed(int m, int n) {
if (m -n > INT_MIN && m - n <= 0)
return;
clang_analyzer_eval(n - m <= 0); // expected-warning{{TRUE}}
}
void effective_range(int m, int n) {
assert(m - n >= 0);
assert(n - m >= 0);
clang_analyzer_eval(m - n == 0); // expected-warning{{TRUE}}
clang_analyzer_eval(n - m == 0); // expected-warning{{TRUE}}
}
void effective_range_2(int m, int n) {
assert(m - n <= 0);
assert(n - m <= 0);
clang_analyzer_eval(m - n == 0); // expected-warning{{TRUE}} expected-warning{{FALSE}}
clang_analyzer_eval(n - m == 0); // expected-warning{{TRUE}} expected-warning{{FALSE}}
}
void negate_unsigned_min(unsigned m, unsigned n) {
if (m - n == UINT_MIN) {
clang_analyzer_eval(n - m == UINT_MIN); // expected-warning{{TRUE}}
clang_analyzer_eval(n - m != UINT_MIN); // expected-warning{{FALSE}}
clang_analyzer_eval(n - m > UINT_MIN); // expected-warning{{FALSE}}
clang_analyzer_eval(n - m < UINT_MIN); // expected-warning{{FALSE}}
}
}
void negate_unsigned_mid(unsigned m, unsigned n) {
if (m - n == UINT_MID) {
clang_analyzer_eval(n - m == UINT_MID); // expected-warning{{TRUE}}
clang_analyzer_eval(n - m != UINT_MID); // expected-warning{{FALSE}}
}
}
void negate_unsigned_mid2(unsigned m, unsigned n) {
if (m - n < UINT_MID && m - n > UINT_MIN) {
clang_analyzer_eval(n - m > UINT_MID); // expected-warning{{TRUE}}
clang_analyzer_eval(n - m < UINT_MID); // expected-warning{{FALSE}}
}
}
void negate_unsigned_max(unsigned m, unsigned n) {
if (m - n == UINT_MAX) {
clang_analyzer_eval(n - m == 1); // expected-warning{{TRUE}}
clang_analyzer_eval(n - m != 1); // expected-warning{{FALSE}}
}
}
void negate_unsigned_one(unsigned m, unsigned n) {
if (m - n == 1) {
clang_analyzer_eval(n - m == UINT_MAX); // expected-warning{{TRUE}}
clang_analyzer_eval(n - m < UINT_MAX); // expected-warning{{FALSE}}
}
}
// The next code is a repro for the bug PR41588
void negated_unsigned_range(unsigned x, unsigned y) {
clang_analyzer_eval(x - y != 0); // expected-warning{{FALSE}} expected-warning{{TRUE}}
clang_analyzer_eval(y - x != 0); // expected-warning{{FALSE}} expected-warning{{TRUE}}
// expected no assertion on the next line
clang_analyzer_eval(x - y != 0); // expected-warning{{FALSE}} expected-warning{{TRUE}}
}
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