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Fix #11108 FP unreadVariable with unique_ptr and unknown c'tor (#4284) 

* Fix #11108 FP unreadVariable with unique_ptr and unknown c'tor

* Fix test
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chrchr-github 2022-07-16 23:46:55 +02:00 committed by GitHub
parent b16d12b5fb
commit 4894cdab8f
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2 changed files with 7 additions and 1 deletions
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2
lib/checkunusedvar.cpp
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@ -1199,7 +1199,7 @@ void CheckUnusedVar::checkFunctionVariableUsage()
if (tok->str() == "=" && !(tok->valueType() && tok->valueType()->pointer) && isRaiiClass(tok->valueType(), mTokenizer->isCPP(), false))
continue;
const bool isPointer = tok->valueType() && tok->valueType()->pointer;
const bool isPointer = tok->valueType() && (tok->valueType()->pointer || tok->valueType()->type == ValueType::SMART_POINTER);
if (tok->isName()) {
if (isRaiiClass(tok->valueType(), mTokenizer->isCPP(), false))

6
test/testunusedvar.cpp
View File

@ -6012,6 +6012,12 @@ private:
" return *p;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
functionVariableUsage("struct S { S(); };\n" // #11108
"void f(std::unique_ptr<S> p) {\n"
" p = nullptr;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
// ticket #3104 - false positive when variable is read with "if (NOT var)"