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* [Bug c++/50015] New: std::initializer_list<std::string> members are not properly initialized @ 2011-08-07 15:48 danny.dyk@tu-dortmund.de 2011-08-07 15:50 ` [Bug c++/50015] " danny.dyk@tu-dortmund.de ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: danny.dyk@tu-dortmund.de @ 2011-08-07 15:48 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50015 Summary: std::initializer_list<std::string> members are not properly initialized Product: gcc Version: 4.6.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned@gcc.gnu.org ReportedBy: danny.dyk@tu-dortmund.de Created attachment 24940 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24940 Output of 'g++ -std=c++0x -save-temps -o test-case test-case.cc' When creating a std::initializer_list<std::string> as part of a struct, the actual object is not properly initialized. Consider the following test case: -- BEGIN -- #include <initializer_list> #include <iostream> #include <string> struct T { std::initializer_list<std::string> s; }; T foo { {"foo", "bar", "baz"} }; int main(int, char**) { for (auto t = foo.s.begin(), t_end = foo.s.end() ; t != t_end ; ++t) std::cout << *t << std::endl; return 0; } -- END -- After compiling this test case using g++ -Wall -pedantic -std=c++0x -o test-case test-case.cc [no errors, no warnings] the execution of the resulting binary via ./test-case either raises a segmentation fault or produces garbled output, e.g., foo1`particularÿÿÿÿbar1ÿÿ Looks very much like terminating '\0's are not in place. This bug was first seen when using gcc-4.4.5 and is reproducable under gcc-4.5.0 up to gcc-4.6.1. The particular version of gcc-4.6.1 was configured as configure \ --prefix=/het/packages/gcc-${VERSION} \ --program-prefix=het- \ --program-suffix=-${VERSION} \ --enable-languages=c,c++ \ --disable-multilib and built on an amd64 system. I will attach the output of g++ -std=c++0x -save-temps -o test-case test-case.cc g++ -std=c++0x -fdump-tree-gimple -o test-case test-case.cc to this bug report. Thank you to Alexander Faeroey for help in reducing the segfaulting code to a manageable test case. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/50015] std::initializer_list<std::string> members are not properly initialized 2011-08-07 15:48 [Bug c++/50015] New: std::initializer_list<std::string> members are not properly initialized danny.dyk@tu-dortmund.de @ 2011-08-07 15:50 ` danny.dyk@tu-dortmund.de 2011-08-07 16:38 ` [Bug c++/50015] [C++0x] " paolo.carlini at oracle dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: danny.dyk@tu-dortmund.de @ 2011-08-07 15:50 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50015 --- Comment #1 from Danny van Dyk <danny.dyk@tu-dortmund.de> 2011-08-07 15:49:43 UTC --- Created attachment 24941 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24941 Output of 'g++ -std=c++0x -fdump-tree-gimple -o test-case test-case.cc' ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/50015] [C++0x] std::initializer_list<std::string> members are not properly initialized 2011-08-07 15:48 [Bug c++/50015] New: std::initializer_list<std::string> members are not properly initialized danny.dyk@tu-dortmund.de 2011-08-07 15:50 ` [Bug c++/50015] " danny.dyk@tu-dortmund.de @ 2011-08-07 16:38 ` paolo.carlini at oracle dot com 2011-08-08 13:55 ` jason at gcc dot gnu.org 2011-11-04 16:26 ` jason at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: paolo.carlini at oracle dot com @ 2011-08-07 16:38 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50015 Paolo Carlini <paolo.carlini at oracle dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jason at gcc dot gnu.org Summary|std::initializer_list<std:: |[C++0x] |string> members are not |std::initializer_list<std:: |properly initialized |string> members are not | |properly initialized --- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> 2011-08-07 16:38:30 UTC --- Also basing on the errors produced by valgrind, seems related to PR48370. Jason can you have a look / maybe close as duplicate? ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/50015] [C++0x] std::initializer_list<std::string> members are not properly initialized 2011-08-07 15:48 [Bug c++/50015] New: std::initializer_list<std::string> members are not properly initialized danny.dyk@tu-dortmund.de 2011-08-07 15:50 ` [Bug c++/50015] " danny.dyk@tu-dortmund.de 2011-08-07 16:38 ` [Bug c++/50015] [C++0x] " paolo.carlini at oracle dot com @ 2011-08-08 13:55 ` jason at gcc dot gnu.org 2011-11-04 16:26 ` jason at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jason at gcc dot gnu.org @ 2011-08-08 13:55 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50015 Jason Merrill <jason at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |DUPLICATE --- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-08-08 13:54:30 UTC --- Yep, same bug. *** This bug has been marked as a duplicate of bug 48370 *** ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug c++/50015] [C++0x] std::initializer_list<std::string> members are not properly initialized 2011-08-07 15:48 [Bug c++/50015] New: std::initializer_list<std::string> members are not properly initialized danny.dyk@tu-dortmund.de ` (2 preceding siblings ...) 2011-08-08 13:55 ` jason at gcc dot gnu.org @ 2011-11-04 16:26 ` jason at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: jason at gcc dot gnu.org @ 2011-11-04 16:26 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50015 --- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> 2011-11-04 16:26:11 UTC --- I verified that my patch for 48370 also fixes this testcase. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2011-11-04 16:26 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-08-07 15:48 [Bug c++/50015] New: std::initializer_list<std::string> members are not properly initialized danny.dyk@tu-dortmund.de 2011-08-07 15:50 ` [Bug c++/50015] " danny.dyk@tu-dortmund.de 2011-08-07 16:38 ` [Bug c++/50015] [C++0x] " paolo.carlini at oracle dot com 2011-08-08 13:55 ` jason at gcc dot gnu.org 2011-11-04 16:26 ` jason at gcc dot gnu.org
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