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 ...
c++ 错误: reference to local variable ‘...’ returned 当返回函数的零时量的引用的时候就会出现这种情况。 3.cc: In function ‘const string& add_(const string&, const string&, const string&)’: 3.cc:6:12: warning: reference to local variable ‘s&rsquo......
Warning: Call-time pass-by-reference has been deprecated解决方法 IIS7.5通过web.config设置301重定向 centos7下/etc/rc.local 开机不执行的问题 CentOS 6.0 VNC远程桌面配置方法 禁止root远程登录centos(启用sudo) 让CentOS时间同步的方法 win2003下挂载磁盘 修改mysql的远程登陆root密码 MySQL报错ERROR 1186 (HY000...
"An error occurred during local reporting processing. Object reference not set to an instance of an object." "Define query parameters" popup in Dataset properties -> Refersh field, not displayed for Sps in SSDT 2010 (Works fine in BIDS) "Dynamic Date" in a suscribed SSRS report "How to...
add users from another domain to domain local groups ADD-ADGroupMember - AD Contact Add-ADGroupMember : A referral was returned from the server??? Add-ADGroupMember fails if a member is already in the group Add-Computer to domain with new name returns error Add-Computer unable to join do...
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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...
The C# compiler doesn't seem to be smart enough to be aware of basic non null checking saved in variable or returned by a property. Expected Behavior: No CS8602 warning. Actual Behavior: CS8602 warnings (Dereference of a possibly null reference). I would like to avoid the ugly null-forgi...
Explanation The if attribute specifies network interface information, which includes a reference to the network object that the interface connects to. In this case, you have omitted a required attribute which is associated with the if attribute. User Action Try the operation again, including the req...