[cfe-dev] Variable length arrays with initialization

[Frank Redeker via cfe-dev]

Hello list,

Given the following piece of code

int foo (int i) {
   char  array[i+1] = {0};

   if (array[i]) {
      return 0;
   }
   return 1;
}


When compiling with g++ [g++ (GCC) 6.4.0] the code compiles OK.

But when compiling with clang++ [clang version 4.0.1
(tags/RELEASE_401/final)] I get the following error.

array.c++:2:17: error: variable-sized object may not be initialize


My question now is, is this an bug in GCC, or is there an option for
CLANG to compile this code without errors? Or may is there an option for
g++ to let the compile fail on this code?


Frank