[cfe-dev] [patch] _Generic constant string used as controlling expression

[Prathamesh Kulkarni]

Hi,
   I had reported this bug earlier:
http://clang-developers.42468.n3.nabble.com/Generic-constant-string-as-controlling-expression-td4036519.html

For following case:
int main(void)
{
  int x = _Generic("hello", char *: 1);
}

clang gives error:
generic_expr.c:3:20: error: controlling expression type 'char [6]' not
compatible with any generic association type
 int x = _Generic ("hello", char *: 1);

I guess that's because array-to-pointer conversion is not performed
when array is used as controlling expression.
gcc-4.9 compiles the above test-case.

I have attached a patch that performs array-to-pointer conversion
when array is used as controlling expression, and it compiles the
above test-case.
OK to commit ?

Thanks and Regards,
Prathamesh
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