| // RUN: %clang_cc1 -std=c99 -fsyntax-only -verify %s |
| // RUN: %clang_cc1 -x c++ -std=c++98 -fsyntax-only -verify %s |
| // RUN: %clang_cc1 -std=c99 -fno-signed-char -fsyntax-only -verify %s |
| |
| struct A {}; |
| |
| typedef struct A *MPI_Datatype; |
| |
| int wrong1(void *buf, MPI_Datatype datatype) |
| __attribute__(( pointer_with_type_tag )); // expected-error {{'pointer_with_type_tag' attribute requires exactly 3 arguments}} |
| |
| int wrong2(void *buf, MPI_Datatype datatype) |
| __attribute__(( pointer_with_type_tag(mpi,0,7) )); // expected-error {{attribute parameter 2 is out of bounds}} |
| |
| int wrong3(void *buf, MPI_Datatype datatype) |
| __attribute__(( pointer_with_type_tag(mpi,3,7) )); // expected-error {{attribute parameter 2 is out of bounds}} |
| |
| int wrong4(void *buf, MPI_Datatype datatype) |
| __attribute__(( pointer_with_type_tag(mpi,1,0) )); // expected-error {{attribute parameter 3 is out of bounds}} |
| |
| int wrong5(void *buf, MPI_Datatype datatype) |
| __attribute__(( pointer_with_type_tag(mpi,1,3) )); // expected-error {{attribute parameter 3 is out of bounds}} |
| |
| int wrong6(void *buf, MPI_Datatype datatype) |
| __attribute__(( pointer_with_type_tag(mpi,0x8000000000000001ULL,1) )); // expected-error {{attribute parameter 2 is out of bounds}} |
| |
| extern int x; |
| |
| int wrong7(void *buf, MPI_Datatype datatype) |
| __attribute__(( pointer_with_type_tag(mpi,x,2) )); // expected-error {{attribute requires parameter 2 to be an integer constant}} |
| |
| int wrong8(void *buf, MPI_Datatype datatype) |
| __attribute__(( pointer_with_type_tag(mpi,1,x) )); // expected-error {{attribute requires parameter 3 to be an integer constant}} |
| |
| int wrong9 __attribute__(( pointer_with_type_tag(mpi,1,2) )); // expected-error {{'pointer_with_type_tag' attribute only applies to non-K&R-style functions}} |
| |
| int wrong10(double buf, MPI_Datatype type) |
| __attribute__(( pointer_with_type_tag(mpi,1,2) )); // expected-error {{'pointer_with_type_tag' attribute only applies to pointer arguments}} |
| |
| int ok11(void *, ...) |
| __attribute__(( pointer_with_type_tag(mpi,1,2) )); |
| int wrong11(void *, ...) |
| __attribute__(( pointer_with_type_tag(mpi,2,3) )); // expected-error {{'pointer_with_type_tag' attribute only applies to pointer arguments}} |
| |
| extern struct A datatype_wrong1 |
| __attribute__(( type_tag_for_datatype )); // expected-error {{'type_tag_for_datatype' attribute requires parameter 1 to be an identifier}} |
| |
| extern struct A datatype_wrong2 |
| __attribute__(( type_tag_for_datatype(mpi,1,2) )); // expected-error {{expected a type}} |
| |
| extern struct A datatype_wrong3 |
| __attribute__(( type_tag_for_datatype(mpi,not_a_type) )); // expected-error {{unknown type name 'not_a_type'}} |
| |
| extern struct A datatype_wrong4 |
| __attribute__(( type_tag_for_datatype(mpi,int,int) )); // expected-error {{expected identifier}} |
| |
| extern struct A datatype_wrong5 |
| __attribute__(( type_tag_for_datatype(mpi,int,not_a_flag) )); // expected-error {{invalid comparison flag 'not_a_flag'}} |
| |
| extern struct A datatype_wrong6 |
| __attribute__(( type_tag_for_datatype(mpi,int,layout_compatible,not_a_flag) )); // expected-error {{invalid comparison flag 'not_a_flag'}} |
| |
| |
| void datatype_wrong7(void) __attribute__((type_tag_for_datatype(datatype_wrong7, int))); // expected-error {{'type_tag_for_datatype' attribute only applies to variables}} |
| |
| // Using a tag with kind A in a place where the function requires kind B should |
| // warn. |
| |
| void A_func(void *ptr, void *tag) __attribute__(( pointer_with_type_tag(a,1,2) )); |
| |
| extern struct A A_tag __attribute__(( type_tag_for_datatype(a,int) )); |
| extern struct A B_tag __attribute__(( type_tag_for_datatype(b,int) )); |
| |
| void C_func(void *ptr, int tag) __attribute__(( pointer_with_type_tag(c,1,2) )); |
| |
| static const int C_tag __attribute__(( type_tag_for_datatype(c,int) )) = 10; |
| static const int D_tag __attribute__(( type_tag_for_datatype(d,int) )) = 20; |
| |
| void test_tag_mismatch(int *ptr) |
| { |
| A_func(ptr, &A_tag); // no-warning |
| A_func(ptr, &B_tag); // expected-warning {{this type tag was not designed to be used with this function}} |
| C_func(ptr, C_tag); // no-warning |
| C_func(ptr, D_tag); // expected-warning {{this type tag was not designed to be used with this function}} |
| C_func(ptr, 10); // no-warning |
| C_func(ptr, 20); // should warn, but may cause false positives |
| } |
| |
| void test_null_pointer() |
| { |
| C_func(0, C_tag); // no-warning |
| C_func((void *) 0, C_tag); // no-warning |
| C_func((int *) 0, C_tag); // no-warning |
| C_func((long *) 0, C_tag); // expected-warning {{argument type 'long *' doesn't match specified 'c' type tag that requires 'int *'}} |
| } |
| |
| // Check that we look through typedefs in the special case of allowing 'char' |
| // to be matched with 'signed char' or 'unsigned char'. |
| void E_func(void *ptr, int tag) __attribute__(( pointer_with_type_tag(e,1,2) )); |
| |
| typedef char E_char; |
| typedef char E_char_2; |
| typedef signed char E_char_signed; |
| typedef unsigned char E_char_unsigned; |
| |
| static const int E_tag __attribute__(( type_tag_for_datatype(e,E_char) )) = 10; |
| |
| void test_char_typedef(char *char_buf, |
| E_char_2 *e_char_buf, |
| E_char_signed *e_char_signed_buf, |
| E_char_unsigned *e_char_unsigned_buf) |
| { |
| E_func(char_buf, E_tag); |
| E_func(e_char_buf, E_tag); |
| #ifdef __CHAR_UNSIGNED__ |
| E_func(e_char_signed_buf, E_tag); // expected-warning {{argument type 'E_char_signed *' (aka 'signed char *') doesn't match specified 'e' type tag that requires 'E_char *' (aka 'char *')}} |
| E_func(e_char_unsigned_buf, E_tag); |
| #else |
| E_func(e_char_signed_buf, E_tag); |
| E_func(e_char_unsigned_buf, E_tag); // expected-warning {{argument type 'E_char_unsigned *' (aka 'unsigned char *') doesn't match specified 'e' type tag that requires 'E_char *' (aka 'char *')}} |
| #endif |
| } |
| |
| // Tests for argument_with_type_tag. |
| |
| #define F_DUPFD 10 |
| #define F_SETLK 20 |
| |
| struct flock { }; |
| |
| static const int F_DUPFD_tag __attribute__(( type_tag_for_datatype(fcntl,int) )) = F_DUPFD; |
| static const int F_SETLK_tag __attribute__(( type_tag_for_datatype(fcntl,struct flock *) )) = F_SETLK; |
| |
| int fcntl(int fd, int cmd, ...) __attribute__(( argument_with_type_tag(fcntl,3,2) )); |
| |
| void test_argument_with_type_tag(struct flock *f) |
| { |
| fcntl(0, F_DUPFD, 10); // no-warning |
| fcntl(0, F_SETLK, f); // no-warning |
| |
| fcntl(0, F_SETLK, 10); // expected-warning {{argument type 'int' doesn't match specified 'fcntl' type tag that requires 'struct flock *'}} |
| fcntl(0, F_DUPFD, f); // expected-warning {{argument type 'struct flock *' doesn't match specified 'fcntl' type tag that requires 'int'}} |
| } |
| |
| void test_tag_expresssion(int b) { |
| fcntl(0, b ? F_DUPFD : F_SETLK, 10); // no-warning |
| fcntl(0, b + F_DUPFD, 10); // no-warning |
| fcntl(0, (b, F_DUPFD), 10); // expected-warning {{expression result unused}} |
| } |
| |
| // Check that using 64-bit magic values as tags works and tag values do not |
| // overflow internally. |
| void F_func(void *ptr, unsigned long long tag) __attribute__((pointer_with_type_tag(f,1,2) )); |
| |
| static const unsigned long long F_tag1 __attribute__(( type_tag_for_datatype(f,int) )) = 0xFFFFFFFFFFFFFFFFULL; |
| static const unsigned long long F_tag2 __attribute__(( type_tag_for_datatype(f,float) )) = 0xFFFFFFFFULL; |
| |
| void test_64bit_magic(int *int_ptr, float *float_ptr) |
| { |
| F_func(int_ptr, 0xFFFFFFFFFFFFFFFFULL); |
| F_func(int_ptr, 0xFFFFFFFFULL); // expected-warning {{argument type 'int *' doesn't match specified 'f' type tag that requires 'float *'}} |
| F_func(float_ptr, 0xFFFFFFFFFFFFFFFFULL); // expected-warning {{argument type 'float *' doesn't match specified 'f' type tag that requires 'int *'}} |
| F_func(float_ptr, 0xFFFFFFFFULL); |
| } |