65 lines
2.9 KiB
C
65 lines
2.9 KiB
C
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -Wcast-qual -verify %s
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -x c++ -fsyntax-only -Wcast-qual -verify %s
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#include <stdint.h>
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void foo() {
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const char *const ptr = 0;
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const char *const *ptrptr = 0;
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char *const *ptrcptr = 0;
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char **ptrptr2 = 0;
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char *y = (char *)ptr; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}}
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char **y1 = (char **)ptrptr; // expected-warning {{cast from 'const char *const *' to 'char **' drops const qualifier}}
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const char **y2 = (const char **)ptrptr; // expected-warning {{cast from 'const char *const *' to 'const char **' drops const qualifier}}
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char *const *y3 = (char *const *)ptrptr; // expected-warning {{cast from 'const char *const' to 'char *const' drops const qualifier}}
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const char **y4 = (const char **)ptrcptr; // expected-warning {{cast from 'char *const *' to 'const char **' drops const qualifier}}
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char *z = (char *)(uintptr_t)(const void *)ptr; // no warning
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char *z1 = (char *)(const void *)ptr; // expected-warning {{cast from 'const void *' to 'char *' drops const qualifier}}
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volatile char *vol = 0;
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char *vol2 = (char *)vol; // expected-warning {{cast from 'volatile char *' to 'char *' drops volatile qualifier}}
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const volatile char *volc = 0;
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char *volc2 = (char *)volc; // expected-warning {{cast from 'const volatile char *' to 'char *' drops const and volatile qualifiers}}
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int **intptrptr;
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const int **intptrptrc = (const int **)intptrptr; // expected-warning {{cast from 'int **' to 'const int **' must have all intermediate pointers const qualified}}
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volatile int **intptrptrv = (volatile int **)intptrptr; // expected-warning {{cast from 'int **' to 'volatile int **' must have all intermediate pointers const qualified}}
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int *intptr;
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const int *intptrc = (const int *)intptr; // no warning
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const char **charptrptrc;
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char **charptrptr = (char **)charptrptrc; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}}
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const char *constcharptr;
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char *charptr = (char *)constcharptr; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}}
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const char *constcharptr2 = (char *)constcharptr; // expected-warning {{cast from 'const char *' to 'char *' drops const qualifier}}
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const char *charptr2 = (char *)charptr; // no warning
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}
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void bar_0() {
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struct C {
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const int a;
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int b;
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};
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const struct C S = {0, 0};
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*(int *)(&S.a) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}}
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*(int *)(&S.b) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}}
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}
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void bar_1() {
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struct C {
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const int a;
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int b;
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};
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struct C S = {0, 0};
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S.b = 0; // no warning
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*(int *)(&S.a) = 0; // expected-warning {{cast from 'const int *' to 'int *' drops const qualifier}}
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*(int *)(&S.b) = 0; // no warning
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}
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