c++ - C++11 variable size POD struct -

i writing low-lewel data manipulation code in c++ 11 , want use old-known c feature of flexible arrays @ end of struct (see info here).

struct variablecell {     /**      * @brief size in bytes of following data.      */     std::uint32_t cellsize;      /**      * @brief data stored in overlay.      */     std::uint8_t celldata[]; }; 

once use gcc paramaters

-wall -pedantic -std=c++11 

i waring

xxx.h:xx: warning: iso c++ forbids zero-size array 'variablecell' [-wpedantic] 

this used correct feature. please, not tell me approach wrong - , has been correct way low-level data manipulation.

why standard changed , how disable 1 particular warning?

thanks

edit: apologies, mistaken c feature turned 1 of exceptions not c++ include. consider using different approach. curiosity, compilers allows non-standard extension , how make them accept without warning?

thanks

as reference incompatibilities between iso c , iso c++ states in flexible array members section:

c++ not support flexible array members.

(this feature might provided extension c++ compilers, valid pod structure types.)

gcc support extension clang. apparently works in visual studio - see live if don't use /za can find documentation on besides post stephan t. lavavej.

i don't think there portable way silence warning, partially disable pedantic warnings in gcc within source should work gcc.