c++ - gcc 4.9.2 bug in -Wmissing-field-initializers? -

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i have issue in code - can copied 1:1 cpp file in order test behaving:

#include <atomic>  typedef struct {     char                sdatetime [20];     char                slogfiledirectory [300];     char                slogfilenametemplate [300];     char                slogoutput [10][100];     std::atomic<bool>   breadytoflush; } logentries;  typedef struct {     logentries              lelogentries [1] {}; } logthreads;

compiling gcc 4.9.2 sles 11 sp2 g++ -std=c++11 gcc-warning-bug.cpp -wall -wextra -c receive these strange warnings:

gcc-warning-bug.cpp:18:34: warning: missing initializer member ‘logentries::sdatetime’ [-wmissing-field-initializers]   logentries    lelogentries [1] {};                                   ^ gcc-warning-bug.cpp:18:34: warning: missing initializer member ‘logentries::slogfiledirectory’ [-wmissing-field-initializers] gcc-warning-bug.cpp:18:34: warning: missing initializer member ‘logentries::slogfilenametemplate’ [-wmissing-field-initializers] gcc-warning-bug.cpp:18:34: warning: missing initializer member ‘logentries::slogoutput’ [-wmissing-field-initializers] gcc-warning-bug.cpp:18:34: warning: missing initializer member ‘logentries::breadytoflush’ [-wmissing-field-initializers]

adding {} initializer in line

std::atomic<bool>   breadytoflush {};

even g++ complaining in 1st warning logentries::sdatetime warnings gone.

the warning gone when remove std::atomic<bool> line. code simple; when have g++ 4.9.2 check out - strange.

edit: regardless logentries struct member add {} initializer warnings gone.

how can behaving explained? me bug...

ps: consider bug: change array specifier in line 1000:

    logentries              lelogentries [1000] {};

g++ produce 5'000 warnings! suppose not make sense repeat warning each array value.

update:

the 1st case confirmed gnu bug fixed in gcc 5.0

the ice [internal compiler error] in bug database gnu bug database

it seems bug. playing bit around , after modification compiler message gcc stopped because of internal error.

update: requested code cannot compiled gcc. compiler options: g++ -std=c++11 gcc-warning-bug.cpp -wall -wextra -werror -fno-strict-aliasing -fwrapv -fno-aggressive-loop-optimizations -c - options there because gnu requests bug report.

#include <atomic>  class logentries { public:     char                sdatetime [20];     std::atomic<bool>   breadytoflush; };  class logthreads { public:     static logentries   lelogentries [10]; };  logentries logthreads::lelogentries [10] {};

compiler fails output:

gcc-warning-bug.cpp:16:43: internal compiler error: in gimplify_init_constructor, @ gimplify.c:4007 .... please submit full bug report, preprocessed source if appropriate. please include complete backtrace bug report. see <http://gcc.gnu.org/bugs.html> instructions.

i prepare sample code , submit developer team. in project member lelogentries static.

when remove std::atomic line works --> problem in std::atomic implementation?


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