| // RUN: clang %s -emit-llvm -o - |
| |
| // PR1895 |
| // sizeof function |
| int zxcv(void); |
| int x=sizeof(zxcv); |
| int y=__alignof__(zxcv); |
| |
| |
| void *test(int *i) { |
| short a = 1; |
| i += a; |
| i + a; |
| a + i; |
| } |
| |
| _Bool test2b; |
| int test2() {if (test2b);} |
| |
| // PR1921 |
| int test3() { |
| const unsigned char *bp; |
| bp -= (short)1; |
| } |
| |
| // PR2080 - sizeof void |
| int t1 = sizeof(void); |
| int t2 = __alignof__(void); |
| void test4() { |
| t1 = sizeof(void); |
| t2 = __alignof__(void); |
| |
| t1 = sizeof(test4()); |
| t2 = __alignof__(test4()); |
| } |
| |
| // 'const float' promotes to double in varargs. |
| int test5(const float x, float float_number) { |
| return __builtin_isless(x, float_number); |
| } |
| |
| // this one shouldn't fold |
| int ola() { |
| int a=2; |
| if ((0, (int)a) & 2) { return 1; } |
| return 2; |
| } |
| |
| // this one shouldn't fold as well |
| void eMaisUma() { |
| double t[1]; |
| if (*t) |
| return; |
| } |
| |
| // rdar://6520707 |
| void f0(void (*fp)(void), void (*fp2)(void)) { |
| int x = fp - fp2; |
| } |
| |
| // noop casts as lvalues. |
| struct X { |
| int Y; |
| }; |
| struct X foo(); |
| int bar() { |
| return ((struct X)foo()).Y + 1; |
| } |
| |
| // PR3809: INC/DEC of function pointers. |
| void f2(void); |
| unsigned f1(void) { |
| void (*fp)(void) = f2; |
| |
| ++fp; |
| fp++; |
| --fp; |
| fp--; |
| return (unsigned) fp; |
| } |
| |
| union f3_x {int x; float y;}; |
| int f3() {return ((union f3_x)2).x;} |
| |
| union f4_y {int x; _Complex float y;}; |
| _Complex float f4() {return ((union f4_y)(_Complex float)2.0).y;} |
| |
| struct f5_a { int a; } f5_a; |
| union f5_z {int x; struct f5_a y;}; |
| struct f5_a f5() {return ((union f5_z)f5_a).y;} |