llvm-project/clang/test/Sema/warn-char-subscripts.c

65 lines
1.6 KiB
C

// RUN: %clang_cc1 -Wchar-subscripts -fsyntax-only -verify %s
void t1(void) {
int array[1] = { 0 };
char subscript = 0;
int val = array[subscript]; // expected-warning{{array subscript is of type 'char'}}
}
void t2(void) {
int array[1] = { 0 };
char subscript = 0;
int val = subscript[array]; // expected-warning{{array subscript is of type 'char'}}
}
void t3(void) {
int *array = 0;
char subscript = 0;
int val = array[subscript]; // expected-warning{{array subscript is of type 'char'}}
}
void t4(void) {
int *array = 0;
char subscript = 0;
int val = subscript[array]; // expected-warning{{array subscript is of type 'char'}}
}
char returnsChar(void);
void t5(void) {
int *array = 0;
int val = array[returnsChar()]; // expected-warning{{array subscript is of type 'char'}}
}
void t6(void) {
int array[1] = { 0 };
signed char subscript = 0;
int val = array[subscript]; // no warning for explicit signed char
}
void t7(void) {
int array[1] = { 0 };
unsigned char subscript = 0;
int val = array[subscript]; // no warning for unsigned char
}
typedef char CharTy;
void t8(void) {
int array[1] = { 0 };
CharTy subscript = 0;
int val = array[subscript]; // expected-warning{{array subscript is of type 'char'}}
}
typedef signed char SignedCharTy;
void t9(void) {
int array[1] = { 0 };
SignedCharTy subscript = 0;
int val = array[subscript]; // no warning for explicit signed char
}
typedef unsigned char UnsignedCharTy;
void t10(void) {
int array[1] = { 0 };
UnsignedCharTy subscript = 0;
int val = array[subscript]; // no warning for unsigned char
}