1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -Wcast-qual -verify %s
2
3 #include <stdint.h>
4
foo()5 void foo() {
6 const char * const ptr = 0;
7 const char * const *ptrptr = 0;
8 char *y = (char *)ptr; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}}
9 char **y1 = (char **)ptrptr; // expected-warning {{cast from 'const char *const' to 'char *' drops const qualifier}}
10 const char **y2 = (const char **)ptrptr; // expected-warning {{cast from 'const char *const *' to 'const char **' drops const qualifier}}
11
12 char *z = (char *)(uintptr_t)(const void *)ptr; // no warning
13 char *z1 = (char *)(const void *)ptr; // expected-warning {{cast from 'const void *' to 'char *' drops const qualifier}}
14
15 volatile char *vol = 0;
16 char *vol2 = (char *)vol; // expected-warning {{cast from 'volatile char *' to 'char *' drops volatile qualifier}}
17 const volatile char *volc = 0;
18 char *volc2 = (char *)volc; // expected-warning {{cast from 'const volatile char *' to 'char *' drops const and volatile qualifiers}}
19
20 int **intptrptr;
21 const int **intptrptrc = (const int **)intptrptr; // expected-warning {{cast from 'int **' to 'const int **' must have all intermediate pointers const qualified}}
22 volatile int **intptrptrv = (volatile int **)intptrptr; // expected-warning {{cast from 'int **' to 'volatile int **' must have all intermediate pointers const qualified}}
23
24 int *intptr;
25 const int *intptrc = (const int *)intptr; // no warning
26
27 const char **charptrptrc;
28 char **charptrptr = (char **)charptrptrc; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}}
29 }
30