forked from OSchip/llvm-project
99 lines
3.8 KiB
C
99 lines
3.8 KiB
C
// RUN: %clang_cc1 %s -ffreestanding -Wno-int-to-pointer-cast -fsyntax-only -verify -pedantic -fpascal-strings -std=c99
|
|
|
|
#include <stdint.h>
|
|
#include <limits.h>
|
|
|
|
int a() {int p; *(1 ? &p : (void*)(0 && (a(),1))) = 10;} // expected-error {{incomplete type 'void' is not assignable}}
|
|
|
|
// rdar://6091492 - ?: with __builtin_constant_p as the operand is an i-c-e.
|
|
int expr;
|
|
char w[__builtin_constant_p(expr) ? expr : 1];
|
|
|
|
char v[sizeof(__builtin_constant_p(0)) == sizeof(int) ? 1 : -1];
|
|
|
|
int implicitConversion = 1.0;
|
|
char floatArith[(int)(1.0+2.0)]; // expected-warning {{variable length array folded to constant array as an extension}}
|
|
|
|
// __builtin_constant_p as the condition of ?: allows arbitrary foldable
|
|
// constants to be transmogrified into i-c-e's.
|
|
char b[__builtin_constant_p((int)(1.0+2.0)) ? (int)(1.0+2.0) : -1];
|
|
|
|
struct c {
|
|
int a : (
|
|
__builtin_constant_p((int)(1.0+2.0)) ? (int)(1.0+
|
|
expr // expected-error {{expression is not an integer constant expression}}
|
|
) : -1);
|
|
};
|
|
|
|
// Check that we can evaluate statement-expressions properly when
|
|
// constant-folding inside an ICE.
|
|
void PR49239() {
|
|
goto check_not_vla;
|
|
char not_vla[__builtin_constant_p(1) ? ({ 42; }) : -1]; // expected-warning {{statement expression}}
|
|
check_not_vla:;
|
|
_Static_assert(sizeof(not_vla) == 42, ""); // expected-warning {{C11 extension}}
|
|
|
|
// It's not clear that this should be valid: __builtin_expect(expr1, expr2)
|
|
// should probably be an ICE if and only if expr1 is an ICE, but we roughly
|
|
// follow GCC in treating it as an ICE if and only if we can evaluate expr1
|
|
// regardless of whether it's an ICE.
|
|
goto check_also_not_vla;
|
|
char also_not_vla[__builtin_expect(({ 76; }), 0)]; // expected-warning {{statement expression}}
|
|
check_also_not_vla:;
|
|
_Static_assert(sizeof(also_not_vla) == 76, ""); // expected-warning {{C11 extension}}
|
|
}
|
|
|
|
|
|
void test1(int n, int* p) { *(n ? p : (void *)(7-7)) = 1; }
|
|
void test2(int n, int* p) { *(n ? p : (void *)0) = 1; }
|
|
|
|
|
|
|
|
char array[1024/(sizeof (long))];
|
|
|
|
int x['\xBb' == (char) 187 ? 1: -1];
|
|
|
|
// PR1992
|
|
void func(int x)
|
|
{
|
|
switch (x) {
|
|
case sizeof("abc"): break;
|
|
case sizeof("loooong"): func(4);
|
|
case sizeof("\ploooong"): func(4);
|
|
}
|
|
}
|
|
|
|
|
|
// rdar://4213768
|
|
int expr;
|
|
char y[__builtin_constant_p(expr) ? -1 : 1];
|
|
char z[__builtin_constant_p(4) ? 1 : -1];
|
|
|
|
// Comma tests
|
|
int comma1[0?1,2:3]; // expected-warning {{left operand of comma operator has no effect}}
|
|
int comma2[1 || (1, 2)]; // expected-warning {{use of logical '||' with constant operand}} \
|
|
// expected-note {{use '|' for a bitwise operation}} \
|
|
// expected-warning {{left operand of comma operator has no effect}}
|
|
int comma3[(1, 2)]; // expected-warning {{variable length array folded to constant array as an extension}} \
|
|
// expected-warning {{left operand of comma operator has no effect}}
|
|
|
|
// Pointer + __builtin_constant_p
|
|
char pbcp[__builtin_constant_p(4) ? (intptr_t)&expr : 0]; // expected-error {{variable length array declaration not allowed at file scope}}
|
|
|
|
int illegaldiv1a[1 || 1/0];
|
|
int illegaldiv1b[1 && 1/0]; //expected-error{{variable length array declaration not allowed at file scope}}
|
|
|
|
int illegaldiv2[1/0]; // expected-error {{variable length array declaration not allowed at file scope}}
|
|
int illegaldiv3[INT_MIN / -1]; // expected-error {{variable length array declaration not allowed at file scope}}
|
|
// PR9262
|
|
int illegaldiv4[0 / (1 / 0)]; // expected-error {{variable length array declaration not allowed at file scope}}
|
|
|
|
int chooseexpr[__builtin_choose_expr(1, 1, expr)];
|
|
int realop[(__real__ 4) == 4 ? 1 : -1];
|
|
int imagop[(__imag__ 4) == 0 ? 1 : -1];
|
|
|
|
int *PR14729 = 0 ?: 1/0; // expected-error {{not a compile-time constant}} expected-warning 3{{}}
|
|
|
|
int bcp_call_v;
|
|
int bcp_call_a[] = {__builtin_constant_p(bcp_call_v && 0) ? bcp_call_v && 0 : -1};
|