you're returning areferenceto a local variable, that's your problem, when the function returns 'tmp' goes out of scope and so the reference is to what? An object that no longer exists. Jul 5, 2011 at 10:17pm ramako(36) Indeed, the problem is that I've seen doing it that way ...
在C++中调用C函数,即使头文件等都包含,编译后提示错误undefined reference to xxx,collect2: error: ld returned 1 exit status。 这是因为C和C++编译过来中,函数的符号表示不一样。在c++中,为了支持重载机制,在编译生成的汇编码中,要对函数的名字进行一些处理,加入比如函数的返回类型等等.而在C中,只是简单的函数...
Declaration statements introduce a new local variable, local constant, or local reference variable (ref local). Local variables can be explicitly or implicitly typed. A declaration statement can also include initialization of a variable's value.
Declaration statements introduce a new local variable, local constant, or local reference variable (ref local). Local variables can be explicitly or implicitly typed. A declaration statement can also include initialization of a variable's value.
Declaration statements introduce a new local variable, local constant, or local reference variable (ref local). Local variables can be explicitly or implicitly typed. A declaration statement can also include initialization of a variable's value.
main.cc:4:10: warning: reference to stack memory associated with local variable 'a' returned [-Wreturn-stack-address] return a; ^ 1 warning generated. 1. 2. 3. 4. 所以,我们可以得出一个简单的结论,返回函数局部变量的引用,是不对的。(即使是C++11新增的右值引用(rvalue reference)也是不行的)...
/** * Returns the value in the current thread's copy of this * thread-local variable. If the variable has no value for the * current thread, it is first initialized to the value returned * by an invocation of the {@link #initialValue} method. * * @return the current thread's value...
to set the value within the range defined by the protocol for this object, an error code "Generic error" is returned. When you perform the Get operation on this object, 1 is returned. 1.3.6.1.3.92.1.1.5.1.26 msdpPeerRemotePort
Cannot allocate lock and/or conditional variable to handle slapd_started variable. Directory Server could not create locks or conditional variables due to resource constraints. Check that Directory Server is not having to contend for system resources with other applications, and that sufficient memory...
(jTry); Console.WriteLine($"Captured local variable is equal to{jTry}:{result}");intanotherJ =3; game.updateCapturedLocalVariable!(anotherJ);boolequalToAnother = game.isEqualToCapturedLocalVariable(anotherJ); Console.WriteLine($"Another lambda observes a new value of captured variable:{equalTo...