| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -Wcast-qual -verify %s |
| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -Wcast-qual -verify %s -fexperimental-new-constant-interpreter |
| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -x c++ -fsyntax-only -Wcast-qual -verify %s -fexperimental-new-constant-interpreter |
| |
| #include <stdint.h> |
| |
| void foo(void) { |
| const char *const ptr = 0; |
| const char *const *ptrptr = 0; |
| char *const *ptrcptr = 0; |
| char **ptrptr2 = 0; |
| char *y = (char *)ptr; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}} |
| char **y1 = (char **)ptrptr; // expected-warning {{cast from 'const char *const *' to 'char **' drops const qualifier}} |
| const char **y2 = (const char **)ptrptr; // expected-warning {{cast from 'const char *const *' to 'const char **' drops const qualifier}} |
| char *const *y3 = (char *const *)ptrptr; // expected-warning {{cast from 'const char *const' to 'char *const' drops const qualifier}} |
| const char **y4 = (const char **)ptrcptr; // expected-warning {{cast from 'char *const *' to 'const char **' drops const qualifier}} |
| |
| char *z = (char *)(uintptr_t)(const void *)ptr; // no warning |
| char *z1 = (char *)(const void *)ptr; // expected-warning {{cast from 'const void *' to 'char *' drops const qualifier}} |
| |
| volatile char *vol = 0; |
| char *vol2 = (char *)vol; // expected-warning {{cast from 'volatile char *' to 'char *' drops volatile qualifier}} |
| const volatile char *volc = 0; |
| char *volc2 = (char *)volc; // expected-warning {{cast from 'const volatile char *' to 'char *' drops const and volatile qualifiers}} |
| |
| int **intptrptr; |
| const int **intptrptrc = (const int **)intptrptr; // expected-warning {{cast from 'int **' to 'const int **' must have all intermediate pointers const qualified}} |
| volatile int **intptrptrv = (volatile int **)intptrptr; // expected-warning {{cast from 'int **' to 'volatile int **' must have all intermediate pointers const qualified}} |
| |
| int *intptr; |
| const int *intptrc = (const int *)intptr; // no warning |
| |
| const char **charptrptrc; |
| char **charptrptr = (char **)charptrptrc; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}} |
| |
| const char *constcharptr; |
| char *charptr = (char *)constcharptr; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}} |
| const char *constcharptr2 = (char *)constcharptr; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}} |
| const char *charptr2 = (char *)charptr; // no warning |
| |
| #ifdef __cplusplus |
| using CharPtr = char *; |
| using CharPtrPtr = char **; |
| using ConstCharPtrPtr = const char **; |
| using CharPtrConstPtr = char *const *; |
| |
| char *fy = CharPtr(ptr); // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}} |
| char **fy1 = CharPtrPtr(ptrptr); // expected-warning {{cast from 'const char *const *' to 'char **' drops const qualifier}} |
| const char **fy2 = ConstCharPtrPtr(ptrptr); // expected-warning {{cast from 'const char *const *' to 'const char **' drops const qualifier}} |
| char *const *fy3 = CharPtrConstPtr(ptrptr); // expected-warning {{cast from 'const char *const' to 'char *const' drops const qualifier}} |
| const char **fy4 = ConstCharPtrPtr(ptrcptr); // expected-warning {{cast from 'char *const *' to 'const char **' drops const qualifier}} |
| |
| using ConstVoidPtr = const void *; |
| char *fz = CharPtr(uintptr_t(ConstVoidPtr(ptr))); // no warning |
| char *fz1 = CharPtr(ConstVoidPtr(ptr)); // expected-warning {{cast from 'const void *' to 'char *' drops const qualifier}} |
| |
| char *fvol2 = CharPtr(vol); // expected-warning {{cast from 'volatile char *' to 'char *' drops volatile qualifier}} |
| char *fvolc2 = CharPtr(volc); // expected-warning {{cast from 'const volatile char *' to 'char *' drops const and volatile qualifiers}} |
| |
| using ConstIntPtrPtr = const int **; |
| using VolitileIntPtrPtr = volatile int **; |
| const int **fintptrptrc = ConstIntPtrPtr(intptrptr); // expected-warning {{cast from 'int **' to 'ConstIntPtrPtr' (aka 'const int **') must have all intermediate pointers const qualified}} |
| volatile int **fintptrptrv = VolitileIntPtrPtr(intptrptr); // expected-warning {{cast from 'int **' to 'VolitileIntPtrPtr' (aka 'volatile int **') must have all intermediate pointers const qualified}} |
| |
| using ConstIntPtr = const int *; |
| const int *fintptrc = ConstIntPtr(intptr); // no warning |
| |
| char **fcharptrptr = CharPtrPtr(charptrptrc); // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}} |
| |
| char *fcharptr = CharPtr(constcharptr); // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}} |
| const char *fcharptr2 = CharPtr(charptr); // no warning |
| #endif |
| } |
| |
| void bar_0(void) { |
| struct C { |
| const int a; |
| int b; |
| }; |
| |
| const struct C S = {0, 0}; |
| |
| *(int *)(&S.a) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}} |
| *(int *)(&S.b) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}} |
| |
| #ifdef __cplusplus |
| using IntPtr = int *; |
| *(IntPtr(&S.a)) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}} |
| *(IntPtr(&S.b)) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}} |
| #endif |
| } |
| |
| void bar_1(void) { |
| struct C { |
| const int a; |
| int b; |
| }; |
| |
| struct C S = {0, 0}; |
| S.b = 0; // no warning |
| |
| *(int *)(&S.a) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}} |
| *(int *)(&S.b) = 0; // no warning |
| |
| #ifdef __cplusplus |
| using IntPtr = int *; |
| *(IntPtr(&S.a)) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}} |
| *(IntPtr(&S.b)) = 0; // no warning |
| #endif |
| } |