| // RUN: %clang_analyze_cc1 -verify %s \ |
| // RUN: -analyzer-config eagerly-assume=false \ |
| // RUN: -analyzer-checker=core,debug.ExprInspection |
| |
| #include "Inputs/errno_var.h" |
| #include "Inputs/some_system_globals.h" |
| #include "Inputs/some_user_globals.h" |
| |
| extern void abort() __attribute__((__noreturn__)); |
| #define assert(expr) ((expr) ? (void)(0) : abort()) |
| |
| void invalidate_globals(void); |
| void clang_analyzer_eval(int x); |
| |
| /// Test the special system 'errno' |
| void test_errno_constraint() { |
| assert(errno > 2); |
| clang_analyzer_eval(errno > 2); // expected-warning {{TRUE}} |
| invalidate_globals(); |
| clang_analyzer_eval(errno > 2); // expected-warning {{UNKNOWN}} |
| } |
| void test_errno_assign(int x) { |
| errno = x; |
| clang_analyzer_eval(errno == x); // expected-warning {{TRUE}} |
| invalidate_globals(); |
| clang_analyzer_eval(errno == x); // expected-warning {{UNKNOWN}} |
| } |
| |
| /// Test user global variables |
| void test_my_const_user_global_constraint() { |
| assert(my_const_user_global > 2); |
| clang_analyzer_eval(my_const_user_global > 2); // expected-warning {{TRUE}} |
| invalidate_globals(); |
| clang_analyzer_eval(my_const_user_global > 2); // expected-warning {{TRUE}} |
| } |
| void test_my_const_user_global_assign(int); // One cannot assign value to a const lvalue. |
| |
| void test_my_mutable_user_global_constraint() { |
| assert(my_mutable_user_global > 2); |
| clang_analyzer_eval(my_mutable_user_global > 2); // expected-warning {{TRUE}} |
| invalidate_globals(); |
| clang_analyzer_eval(my_mutable_user_global > 2); // expected-warning {{UNKNOWN}} |
| } |
| void test_my_mutable_user_global_assign(int x) { |
| my_mutable_user_global = x; |
| clang_analyzer_eval(my_mutable_user_global == x); // expected-warning {{TRUE}} |
| invalidate_globals(); |
| clang_analyzer_eval(my_mutable_user_global == x); // expected-warning {{UNKNOWN}} |
| } |
| |
| /// Test system global variables |
| void test_my_const_system_global_constraint() { |
| assert(my_const_system_global > 2); |
| clang_analyzer_eval(my_const_system_global > 2); // expected-warning {{TRUE}} |
| invalidate_globals(); |
| clang_analyzer_eval(my_const_system_global > 2); // expected-warning {{TRUE}} |
| } |
| void test_my_const_system_global_assign(int);// One cannot assign value to a const lvalue. |
| |
| void test_my_mutable_system_global_constraint() { |
| assert(my_mutable_system_global > 2); |
| clang_analyzer_eval(my_mutable_system_global > 2); // expected-warning {{TRUE}} |
| invalidate_globals(); |
| clang_analyzer_eval(my_mutable_system_global > 2); // expected-warning {{UNKNOWN}} |
| } |
| void test_my_mutable_system_global_assign(int x) { |
| my_mutable_system_global = x; |
| clang_analyzer_eval(my_mutable_system_global == x); // expected-warning {{TRUE}} |
| invalidate_globals(); |
| clang_analyzer_eval(my_mutable_system_global == x); // expected-warning {{UNKNOWN}} |
| } |