警告信息 "[warning] reference to local variable 'a' returned [-wreturn-local-addr]" 表示你的函数试图返回一个局部变量的引用。在C++中,局部变量在函数执行完毕后会被销毁,因此返回局部变量的引用会导致未定义行为,因为返回的引用指向的内存可能已经不再有效。
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 ...
Namespace: Microsoft.PowerShell.Utility.Activities Assembly: Microsoft.PowerShell.Utility.Activities.dll Package: Microsoft.PowerShell.5.1.ReferenceAssemblies v1.0.0 Activity to invoke the Microsoft.PowerShell.Utility\Write-Warning command in a Workflow....
I guess we could try to do as we were doing with setuptools, i.e. compile a test program, except that my understanding ofhttps://mesonbuild.com/Reference-manual_returned_compiler.htmlis that by design you don't have access to environment variable insidemeson.buildlikeCC,CFLAGSetc (seemeson...
V558. Function returns pointer/reference to temporary local object. V559. Suspicious assignment inside the conditional expression of 'if/while/for' statement. V560. Part of conditional expression is always true/false. V561. Consider assigning value to 'foo' variable instead of declaring it anew...
Now back to perl: can the warning be improved? $ ./Configure -des -Dusedevel -DDEBUGGING $ LC_ALL= LC_PAPER='en_US.UTF-8@letter' PERL_DEBUG_LOCALE_INIT=1 ./perl -e1 locale.c:3529: setlocale(LC_ALL, "") returned NULL perl: warning: Setting locale failed. perl: warning: Please...
In the case of passing an array tosizeof, its size is always returned since there is no decay to a pointer. What is the most effective method to determine the size of an array when it is used as an argument? Instead of passing them by value, consider p...
('reference'): brains = []ifvalue: brains = resolve_request_lookup(obj, request, fieldname)ifnotbrains: logger.warning("JSONAPI: Can't resolve reference: {} {}".format(fieldname, value))return[]ifschema[fieldname].multiValued: value = [b.UIDforbinbrains]ifbrainselse[]else: value = ...
* by reference *@paramstring $section The optional section header * text to add *@paramstring $prefix The optional prefix for * language variables. * Defaults to 'TXT_' *@returnboolean True on success, false otherwise */staticfunctionshow_section(&$objTemplateLocal, $section ='', $prefix ...
assigning the value to local variable in razor async task controller not redirecting to action async/await Task<JsonResutl> produces "System.Threading.Tasks.Task`1[System.Web.Mvc.JsonResult]" over wire Attempt to add new controller generates "Object Reference not set to instance of object" error...