forked from OSchip/llvm-project
74 lines
2.3 KiB
C
74 lines
2.3 KiB
C
// RUN: %clang -fsyntax-only -Xclang -verify %s
|
|
typedef union {
|
|
int *ip;
|
|
float *fp;
|
|
long *__restrict rlp;
|
|
void *vpa[1];
|
|
} TU __attribute__((transparent_union));
|
|
|
|
void f(TU); // expected-note{{passing argument to parameter here}}
|
|
|
|
void g(int *ip, float *fp, char *cp) {
|
|
f(ip);
|
|
f(fp);
|
|
f(cp); // expected-error{{incompatible type}}
|
|
f(0);
|
|
|
|
TU tu_ip = ip; // expected-error{{incompatible type}}
|
|
TU tu;
|
|
tu.ip = ip;
|
|
}
|
|
|
|
/* Test ability to redeclare a function taking a transparent_union arg
|
|
with various compatible and incompatible argument types. */
|
|
|
|
void fip(TU);
|
|
void fip(int *i) {}
|
|
|
|
void ffp(TU);
|
|
void ffp(float *f) {}
|
|
|
|
void flp(TU);
|
|
void flp(long *l) {}
|
|
|
|
void fvp(TU); // expected-note{{previous declaration is here}}
|
|
void fvp(void *p) {} // expected-error{{conflicting types}}
|
|
|
|
void fsp(TU); // expected-note{{previous declaration is here}}
|
|
void fsp(short *s) {} // expected-error{{conflicting types}}
|
|
|
|
void fi(TU); // expected-note{{previous declaration is here}}
|
|
void fi(int i) {} // expected-error{{conflicting types}}
|
|
|
|
void fvpp(TU); // expected-note{{previous declaration is here}}
|
|
void fvpp(void **v) {} // expected-error{{conflicting types}}
|
|
|
|
/* FIXME: we'd like to just use an "int" here and align it differently
|
|
from the normal "int", but if we do so we lose the alignment
|
|
information from the typedef within the compiler. */
|
|
typedef struct { int x, y; } __attribute__((aligned(8))) aligned_struct8;
|
|
|
|
typedef struct { int x, y; } __attribute__((aligned(4))) aligned_struct4;
|
|
typedef union {
|
|
aligned_struct4 s4; // expected-note{{alignment of first field}}
|
|
aligned_struct8 s8; // expected-warning{{alignment of field}}
|
|
} TU1 __attribute__((transparent_union));
|
|
|
|
typedef union {
|
|
char c; // expected-note{{size of first field is 8 bits}}
|
|
int i; // expected-warning{{size of field}}
|
|
} TU2 __attribute__((transparent_union));
|
|
|
|
typedef union {
|
|
float f; // expected-warning{{floating}}
|
|
} TU3 __attribute__((transparent_union));
|
|
|
|
typedef union { } TU4 __attribute__((transparent_union)); // expected-warning{{field}}
|
|
|
|
typedef int int4 __attribute__((ext_vector_type(4)));
|
|
typedef union {
|
|
int4 vec; // expected-warning{{first field of a transparent union cannot have vector type 'int4'; transparent_union attribute ignored}}
|
|
} TU5 __attribute__((transparent_union));
|
|
|
|
|