No errors in its own examples

[顾涛明]

Hello,
We used cppcheck to test the example provided by itself, but there is no error that should exist. What is the cause of this?
I sincerely hope to get your reply.
Here is the file without error:
testbool.cpp #line 726
testbool.cpp #line 756
testfunction.cpp #line 842
testother.cpp #line 2696
testother.cpp #line 3325
testother.cpp #line 4359
testother.cpp #line 4688
testsizeof.cpp #line 410
testsizeof.cpp #line 390
testother.cpp #line 5329
E.g:

<error id="suspiciousCase" severity="warning" msg="Found suspicious case label in switch(). Operator '||' probably doesn't work as intended." verbose="Using an operator like '||' in a case label is suspicious. Did you intend to use a bitwise operator, multiple case labels or if/else instead?" cwe="398" inconclusive="true"/>

code:
void function() {  //This is the code we tested
   switch(a) {  
   case a && b:  
       function();  
   case (a||b):  
     function();  
   case a||b:  
       function();  
   }  
}  

testother.cpp #line 2696 //This is the source code of cppcheck
check("void foo() {\n"
" switch(a) {\n"
" case A&&B:\n"
" foo();\n"
" case (A||B):\n"
" foo();\n"
" case A||B:\n"
" foo();\n"
" }\n"
"}");
ASSERT_EQUALS("[test.cpp:3]: (warning, inconclusive) Found suspicious case label in switch(). Operator '&&' probably doesn't work as intended.\n"
"[test.cpp:5]: (warning, inconclusive) Found suspicious case label in switch(). Operator '||' probably doesn't work as intended.\n"
"[test.cpp:7]: (warning, inconclusive) Found suspicious case label in switch(). Operator '||' probably doesn't work as intended.\n", errout.str());

[Daniel Marjamäki]

How do you run cppcheck? Try something like:

cppcheck --enable=all --inconclusive ...

[顾涛明]

Thank you very much. I didn't add --inconclusive, but I still have a question as to why the official example also adds --inconclusive, as if this is an indeterminate parameter. Why is it necessary to add this parameter correctly?