[llvm-bugs] [Bug 26396] New: [3.8 regression] -Wreturn-stack-address false positives

via llvm-bugs llvm-bugs at lists.llvm.org
Sat Jan 30 11:27:51 PST 2016


https://llvm.org/bugs/show_bug.cgi?id=26396

            Bug ID: 26396
           Summary: [3.8 regression] -Wreturn-stack-address false
                    positives
           Product: clang
           Version: 3.8
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
          Assignee: unassignedclangbugs at nondot.org
          Reporter: llvm at bobbyperu.info
                CC: llvm-bugs at lists.llvm.org
    Classification: Unclassified

Since very recently we're getting false-positive -Wreturn-stack-address
warnings:

template <class T>
class QMap
{
public:
    T value(const T &t = T()) const
    {
        return t;
    }
};

struct A {};

void test()
{
    QMap<A*> map;
    map.value();
}

$ clang++ testcase.cpp  -c
testcase.cpp:7:16: warning: returning address of local temporary object
[-Wreturn-stack-address]

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