| // RUN: %clang_cc1 %s -Wno-pointer-to-int-cast -verify -fsyntax-only -ffreestanding |
| |
| #include <stddef.h> |
| #include <stdint.h> |
| |
| typedef void (* fp)(void); |
| void foo(void); |
| |
| // PR clang/3377 |
| fp a[(short int)1] = { foo }; |
| |
| int myArray[5] = {1, 2, 3, 4, 5}; |
| int *myPointer2 = myArray; |
| int *myPointer = &(myArray[2]); |
| |
| |
| extern int x; |
| void *g = &x; |
| int *h = &x; |
| |
| struct union_crash |
| { |
| union |
| { |
| }; |
| }; |
| |
| int test(void) { |
| int a[10]; |
| int b[10] = a; // expected-error {{array initializer must be an initializer list}} |
| int +; // expected-error {{expected identifier or '('}} |
| |
| struct union_crash u = { .d = 1 }; // expected-error {{field designator 'd' does not refer to any field in type 'struct union_crash'}} |
| } |
| |
| |
| // PR2050 |
| struct cdiff_cmd { |
| const char *name; |
| unsigned short argc; |
| int (*handler)(void); |
| }; |
| int cdiff_cmd_open(void); |
| struct cdiff_cmd commands[] = { |
| {"OPEN", 1, &cdiff_cmd_open } |
| }; |
| |
| // PR2348 |
| static struct { int z; } s[2]; |
| int *t = &(*s).z; |
| |
| // PR2349 |
| short *a2(void) |
| { |
| short int b; |
| static short *bp = &b; // expected-error {{initializer element is not a compile-time constant}} |
| |
| return bp; |
| } |
| |
| int pbool(void) { |
| typedef const _Bool cbool; |
| _Bool pbool1 = (void *) 0; |
| cbool pbool2 = &pbool; |
| return pbool2; |
| } |
| |
| |
| union { float f; unsigned u; } u = { 1.0f }; |
| |
| int f3(int x) { return x; } |
| typedef void (*vfunc)(void); |
| void *bar = (vfunc) f3; |
| |
| // PR2747 |
| struct sym_reg { |
| char nc_gpreg; |
| }; |
| int sym_fw1a_scr[] = { |
| ((int)(&((struct sym_reg *)0)->nc_gpreg)) & 0, |
| 8 * ((int)(&((struct sym_reg *)0)->nc_gpreg)) |
| }; |
| |
| // PR3001 |
| struct s1 s2 = { // expected-error {{variable has incomplete type 'struct s1'}} \ |
| // expected-note {{forward declaration of 'struct s1'}} |
| .a = sizeof(struct s3), // expected-error {{invalid application of 'sizeof'}} \ |
| // expected-note{{forward declaration of 'struct s3'}} |
| .b = bogus // expected-error {{use of undeclared identifier 'bogus'}} |
| } |
| |
| // PR3382 |
| char t[] = ("Hello"); |
| |
| typedef struct { } empty; |
| |
| typedef struct { |
| empty e; |
| int i2; |
| } st; |
| |
| st st1 = { .i2 = 1 }; |
| |
| struct { |
| int a; |
| int z[2]; |
| } y = { .z = {} }; |
| |
| int bbb[10]; |
| |
| struct foo2 { |
| uintptr_t a; |
| }; |
| |
| struct foo2 bar2[] = { |
| { (intptr_t)bbb } |
| }; |
| |
| struct foo2 bar3 = { 1, 2 }; // expected-warning{{excess elements in struct initializer}} |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wexcess-initializers" |
| struct foo2 bar3_silent = {1, 2}; |
| #pragma clang diagnostic pop |
| |
| int* ptest1 = __builtin_choose_expr(1, (int*)0, (int*)0); |
| |
| typedef int32_t ivector4 __attribute((vector_size(16))); |
| ivector4 vtest1 = 1 ? (ivector4){1} : (ivector4){1}; |
| ivector4 vtest2 = __builtin_choose_expr(1, (ivector4){1}, (ivector4){1}); |
| |
| uintptr_t ptrasintadd1 = (uintptr_t)&a - 4; |
| uintptr_t ptrasintadd2 = (uintptr_t)&a + 4; |
| uintptr_t ptrasintadd3 = 4 + (uintptr_t)&a; |
| |
| // PR4285 |
| const wchar_t widestr[] = L"asdf"; |
| |
| // PR5447 |
| const double pr5447 = (0.05 < -1.0) ? -1.0 : 0.0499878; |
| |
| // PR4386 |
| |
| // None of these are constant initializers, but we implement GCC's old |
| // behaviour of accepting bar and zed but not foo. GCC's behaviour was |
| // changed in 2007 (rev 122551), so we should be able to change too one |
| // day. |
| int PR4386_bar(void); |
| int PR4386_foo(void) __attribute((weak)); |
| int PR4386_zed(void); |
| |
| int PR4386_a = ((void *) PR4386_bar) != 0; |
| int PR4386_b = ((void *) PR4386_foo) != 0; // expected-error{{initializer element is not a compile-time constant}} |
| int PR4386_c = ((void *) PR4386_zed) != 0; |
| int PR4386_zed(void) __attribute((weak)); |
| |
| // (derived from SPEC vortex benchmark) |
| typedef char strty[10]; |
| struct vortexstruct { strty s; }; |
| struct vortexstruct vortexvar = { "asdf" }; |
| |
| typedef struct { uintptr_t x : 2; } StructWithBitfield; |
| StructWithBitfield bitfieldvar = { (uintptr_t)&bitfieldvar }; // expected-error {{initializer element is not a compile-time constant}} |
| |
| // PR45157 |
| struct PR4517_foo { |
| int x; |
| }; |
| struct PR4517_bar { |
| struct PR4517_foo foo; |
| }; |
| const struct PR4517_foo my_foo = {.x = 42}; |
| struct PR4517_bar my_bar = { |
| .foo = my_foo, // no-warning |
| }; |
| struct PR4517_bar my_bar2 = (struct PR4517_bar){ |
| .foo = my_foo, // no-warning |
| }; |
| struct PR4517_bar my_bar3 = { |
| my_foo, // no-warning |
| }; |
| struct PR4517_bar my_bar4 = (struct PR4517_bar){ |
| my_foo // no-warning |
| }; |
| extern const struct PR4517_foo my_foo2; |
| struct PR4517_bar my_bar5 = { |
| .foo = my_foo2, // expected-error {{initializer element is not a compile-time constant}} |
| }; |
| const struct PR4517_foo my_foo3 = {.x = my_foo.x}; |
| int PR4517_a[2] = {0, 1}; |
| const int PR4517_ca[2] = {0, 1}; |
| int PR4517_idx = 0; |
| const int PR4517_idxc = 1; |
| int PR4517_x1 = PR4517_a[PR4517_idx]; // expected-error {{initializer element is not a compile-time constant}} |
| int PR4517_x2 = PR4517_a[PR4517_idxc]; // expected-error {{initializer element is not a compile-time constant}} |
| int PR4517_x3 = PR4517_a[0]; // expected-error {{initializer element is not a compile-time constant}} |
| int PR4517_y1 = PR4517_ca[PR4517_idx]; // expected-error {{initializer element is not a compile-time constant}} |
| int PR4517_y2 = PR4517_ca[PR4517_idxc]; // no-warning |
| int PR4517_y3 = PR4517_ca[0]; // no-warning |
| union PR4517_u { |
| int x; |
| float y; |
| }; |
| const union PR4517_u u1 = {4.0f}; |
| const union PR4517_u u2 = u1; // no-warning |
| const union PR4517_u u3 = {u1.y}; // expected-error {{initializer element is not a compile-time constant}} |