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* [Bug c++/36297] New: false warning: 'variable' may be used uninitialized in this function @ 2008-05-22 7:45 paskhaver at yahoo dot com 2008-05-22 7:48 ` [Bug c++/36297] " paskhaver at yahoo dot com ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: paskhaver at yahoo dot com @ 2008-05-22 7:45 UTC (permalink / raw) To: gcc-bugs The follwoing code generates warning "warning: 'i' may be used uninitialized in this function" Code is compiled with "g++ -O1 -Wall -c file.cpp -o file.o" on x86_64 Fedora Core 6 (2.6.22.9-61.fc6) with gcc version 4.1.2 20070626 (Red Hat 4.1.2-13) Changing code in almost any way (like removing destructor) disables the warning. class ObjBase { public: virtual ~ObjBase() {} }; class Obj : public ObjBase { int _c; public: Obj(int c) : _c(c){}; }; int _Find(const Obj& key); inline bool Find(const Obj& key, int& v) { static bool flag=true; if (!flag) { return false; } v=_Find(key); return true; } int f() { int i; if (Find(0, i)) { return i; } return 0; } int _Find(const Obj& key){return 0;} -- Summary: false warning: 'variable' may be used uninitialized in this function Product: gcc Version: 4.1.2 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: paskhaver at yahoo dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36297 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/36297] false warning: 'variable' may be used uninitialized in this function 2008-05-22 7:45 [Bug c++/36297] New: false warning: 'variable' may be used uninitialized in this function paskhaver at yahoo dot com @ 2008-05-22 7:48 ` paskhaver at yahoo dot com 2008-05-22 7:48 ` paskhaver at yahoo dot com 2008-05-28 7:47 ` [Bug tree-optimization/36297] " pinskia at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: paskhaver at yahoo dot com @ 2008-05-22 7:48 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from paskhaver at yahoo dot com 2008-05-22 07:47 ------- Created an attachment (id=15668) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15668&action=view) result of -save-temps -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36297 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c++/36297] false warning: 'variable' may be used uninitialized in this function 2008-05-22 7:45 [Bug c++/36297] New: false warning: 'variable' may be used uninitialized in this function paskhaver at yahoo dot com 2008-05-22 7:48 ` [Bug c++/36297] " paskhaver at yahoo dot com @ 2008-05-22 7:48 ` paskhaver at yahoo dot com 2008-05-28 7:47 ` [Bug tree-optimization/36297] " pinskia at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: paskhaver at yahoo dot com @ 2008-05-22 7:48 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from paskhaver at yahoo dot com 2008-05-22 07:48 ------- Created an attachment (id=15669) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15669&action=view) result of -save-temps -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36297 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/36297] false warning: 'variable' may be used uninitialized in this function 2008-05-22 7:45 [Bug c++/36297] New: false warning: 'variable' may be used uninitialized in this function paskhaver at yahoo dot com 2008-05-22 7:48 ` [Bug c++/36297] " paskhaver at yahoo dot com 2008-05-22 7:48 ` paskhaver at yahoo dot com @ 2008-05-28 7:47 ` pinskia at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu dot org @ 2008-05-28 7:47 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from pinskia at gcc dot gnu dot org 2008-05-28 07:47 ------- This has been fixed in at least 4.3.0, it might have also been fixed in 4.2.0 also. -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Component|c++ |tree-optimization Keywords| |diagnostic Resolution| |FIXED Target Milestone|--- |4.3.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36297 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2008-05-28 7:47 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2008-05-22 7:45 [Bug c++/36297] New: false warning: 'variable' may be used uninitialized in this function paskhaver at yahoo dot com 2008-05-22 7:48 ` [Bug c++/36297] " paskhaver at yahoo dot com 2008-05-22 7:48 ` paskhaver at yahoo dot com 2008-05-28 7:47 ` [Bug tree-optimization/36297] " pinskia at gcc dot gnu dot org
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