/* RUN: %clang_cc1 -verify -pedantic -std=c99 %s
RUN: %clang_cc1 -verify=c89 -pedantic -std=c89 %s
expected-no-diagnostics
*/
/* WG14 N835: Yes
* Conversion of array to pointer not limited to lvalues
*
* NB: The crux of the change was C99 changing:
*
* C89 3.2.2.1: Except when it is the operand of ..., an lvalue that has type
* 'array of type' is converted to an expression that has type 'pointer to
* type' that points to the initial element of the array object and is not an
* lvalue.
*
* C99 6.3.2.1p3: Except when it is the operand of ..., an expression that has
* type 'array of type' is converted to an expression with type 'pointer to
* type' that points to the initial element of the array object and is not an
* lvalue.
*/
struct S {
char arr[100];
};
struct S f(void);
void func(void) {
char c;
/* The return from f() is an rvalue, so this code is not valid in C89, but is
* valid in C99.
*/
c = f().arr[10]; /* c89-warning {{ISO C90 does not allow subscripting non-lvalue array}} */
}