From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/Sema/const-eval.c | 133 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 133 insertions(+) create mode 100644 clang/test/Sema/const-eval.c (limited to 'clang/test/Sema/const-eval.c') diff --git a/clang/test/Sema/const-eval.c b/clang/test/Sema/const-eval.c new file mode 100644 index 0000000..bc8b227 --- /dev/null +++ b/clang/test/Sema/const-eval.c @@ -0,0 +1,133 @@ +// RUN: %clang_cc1 -fsyntax-only -verify -triple i686-linux %s + +#define EVAL_EXPR(testno, expr) int test##testno = sizeof(struct{char qq[expr];}); +int x; +EVAL_EXPR(1, (_Bool)&x) +EVAL_EXPR(2, (int)(1.0+(double)4)) +EVAL_EXPR(3, (int)(1.0+(float)4.0)) +EVAL_EXPR(4, (_Bool)(1 ? (void*)&x : 0)) +EVAL_EXPR(5, (_Bool)(int[]){0}) +struct y {int x,y;}; +EVAL_EXPR(6, (int)(1+(struct y*)0)) +EVAL_EXPR(7, (int)&((struct y*)0)->y) +EVAL_EXPR(8, (_Bool)"asdf") +EVAL_EXPR(9, !!&x) +EVAL_EXPR(10, ((void)1, 12)) +void g0(void); +EVAL_EXPR(11, (g0(), 12)) // expected-error {{must have a constant size}} +EVAL_EXPR(12, 1.0&&2.0) +EVAL_EXPR(13, x || 3.0) // expected-error {{must have a constant size}} + +unsigned int l_19 = 1; +EVAL_EXPR(14, (1 ^ l_19) && 1); // expected-error {{fields must have a constant size}} + +void f() +{ + int a; + EVAL_EXPR(15, (_Bool)&a); +} + +// FIXME: Turn into EVAL_EXPR test once we have more folding. +_Complex float g16 = (1.0f + 1.0fi); + +// ?: in constant expressions. +int g17[(3?:1) - 2]; + +EVAL_EXPR(18, ((int)((void*)10 + 10)) == 20 ? 1 : -1); + +struct s { + int a[(int)-1.0f]; // expected-error {{'a' declared as an array with a negative size}} +}; + +EVAL_EXPR(19, ((int)&*(char*)10 == 10 ? 1 : -1)); + +EVAL_EXPR(20, __builtin_constant_p(*((int*) 10))); + +EVAL_EXPR(21, (__imag__ 2i) == 2 ? 1 : -1); + +EVAL_EXPR(22, (__real__ (2i+3)) == 3 ? 1 : -1); + +int g23[(int)(1.0 / 1.0)] = { 1 }; +int g24[(int)(1.0 / 1.0)] = { 1 , 2 }; // expected-warning {{excess elements in array initializer}} +int g25[(int)(1.0 + 1.0)], g26 = sizeof(g25); + +EVAL_EXPR(26, (_Complex double)0 ? -1 : 1) +EVAL_EXPR(27, (_Complex int)0 ? -1 : 1) +EVAL_EXPR(28, (_Complex double)1 ? 1 : -1) +EVAL_EXPR(29, (_Complex int)1 ? 1 : -1) + + +// PR4027 + rdar://6808859 +struct a { int x, y; }; +static struct a V2 = (struct a)(struct a){ 1, 2}; +static const struct a V1 = (struct a){ 1, 2}; + +EVAL_EXPR(30, (int)(_Complex float)((1<<30)-1) == (1<<30) ? 1 : -1) +EVAL_EXPR(31, (int*)0 == (int*)0 ? 1 : -1) +EVAL_EXPR(32, (int*)0 != (int*)0 ? -1 : 1) +EVAL_EXPR(33, (void*)0 - (void*)0 == 0 ? 1 : -1) +void foo(void) {} +EVAL_EXPR(34, (foo == (void *)0) ? -1 : 1) + +// No PR. Mismatched bitwidths lead to a crash on second evaluation. +const _Bool constbool = 0; +EVAL_EXPR(35, constbool) +EVAL_EXPR(36, constbool) + +EVAL_EXPR(37, (1,2.0) == 2.0 ? 1 : -1) +EVAL_EXPR(38, __builtin_expect(1,1) == 1 ? 1 : -1) + +// PR7884 +EVAL_EXPR(39, __real__(1.f) == 1 ? 1 : -1) +EVAL_EXPR(40, __imag__(1.f) == 0 ? 1 : -1) + +// From gcc testsuite +EVAL_EXPR(41, (int)(1+(_Complex unsigned)2)) + +// rdar://8875946 +void rdar8875946() { + double _Complex P; + float _Complex P2 = 3.3f + P; +} + +double d = (d = 0.0); // expected-error {{not a compile-time constant}} +double d2 = ++d; // expected-error {{not a compile-time constant}} + +int n = 2; +int intLvalue[*(int*)((long)&n ?: 1)] = { 1, 2 }; // expected-error {{variable length array}} + +union u { int a; char b[4]; }; +char c = ((union u)(123456)).b[0]; // expected-error {{not a compile-time constant}} + +extern const int weak_int __attribute__((weak)); +const int weak_int = 42; +int weak_int_test = weak_int; // expected-error {{not a compile-time constant}} + +int literalVsNull1 = "foo" == 0; +int literalVsNull2 = 0 == "foo"; + +// PR11385. +int castViaInt[*(int*)(unsigned long)"test"]; // expected-error {{variable length array}} + +// PR11391. +struct PR11391 { _Complex float f; } pr11391; +EVAL_EXPR(42, __builtin_constant_p(pr11391.f = 1)) + +// PR12043 +float varfloat; +const float constfloat = 0; +EVAL_EXPR(43, varfloat && constfloat) // expected-error {{must have a constant size}} + +// +// (Make sure we continue to reject this.) +EVAL_EXPR(44, "x"[0]); // expected-error {{variable length array}} + +// +EVAL_EXPR(45, ((char*)-1) + 1 == 0 ? 1 : -1) +EVAL_EXPR(46, ((char*)-1) + 1 < (char*) -1 ? 1 : -1) +EVAL_EXPR(47, &x < &x + 1 ? 1 : -1) +EVAL_EXPR(48, &x != &x - 1 ? 1 : -1) +EVAL_EXPR(49, &x < &x - 100 ? 1 : -1) // expected-error {{must have a constant size}} + +extern struct Test50S Test50; +EVAL_EXPR(50, &Test50 < (struct Test50S*)((unsigned)&Test50 + 10)) // expected-error {{must have a constant size}} -- cgit v1.2.3