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Diffstat (limited to 'test/Sema/warn-cast-qual.c')
-rw-r--r-- | test/Sema/warn-cast-qual.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/test/Sema/warn-cast-qual.c b/test/Sema/warn-cast-qual.c new file mode 100644 index 000000000000..dc11f5717ebe --- /dev/null +++ b/test/Sema/warn-cast-qual.c @@ -0,0 +1,29 @@ +// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -Wcast-qual -verify %s + +#include <stdint.h> + +void foo() { + const char * const ptr = 0; + const char * const *ptrptr = 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 *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}} +} |