Bug #:

Submitted by:
Reviewed by:
Extended Expr's constant expression predicates to return a source location
if the predicate returns false. This enables us to position the cursor
exactly were the error occurred (simple pleasures:-).

constant.c:9:9: error: enumerator value for 'E2' is not an integer constant
  E2 = (aconst + 1), // illegal
        ^
constant.c:10:8: error: enumerator value for 'E3' is not an integer constant
  E3 = "abc",
       ^
constant.c:12:12: error: enumerator value for 'E5' is not an integer constant
  E5 = 0?7:printf("xx"), // illegal
           ^
constant.c:13:12: error: enumerator value for 'E6' is not an integer constant
  E6 = 1?7:printf("xx"), // legal
           ^
constant.c:16:14: error: enumerator value for 'E9' is not an integer constant
  E9 = E0 || a, // illegal
             ^
constant.c:21:6: error: array has incomplete element type 'void'
void ary[7];
     ^
constant.c:22:28: error: variable length array declared outside of any function
struct { int a; } ary2[1?7:printf("xx")],
                           ^
constant.c:23:34: error: variable length array declared outside of any function
                  aryIllegal[0?7:printf("yy")];
                                 ^
constant.c:25:10: error: variable length array declared outside of any function
int ary3[a]; // illegal
         ^
constant.c:26:17: error: size of array has non-integer type 'float'
typedef int vla[2.0]; // illegal
                ^
constant.c:30:22: error: size of array has non-integer type 'float'
int nonIntegerArray2[1+2.0];
                     ^

llvm-svn: 39454