155 lines
4.8 KiB
C
155 lines
4.8 KiB
C
// RUN: %clang_cc1 -fsyntax-only -verify -triple x86_64-linux %s -Wno-tautological-pointer-compare
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#define EVAL_EXPR(testno, expr) int test##testno = sizeof(struct{char qq[expr];});
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int x;
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EVAL_EXPR(1, (_Bool)&x)
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EVAL_EXPR(2, (int)(1.0+(double)4))
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EVAL_EXPR(3, (int)(1.0+(float)4.0))
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EVAL_EXPR(4, (_Bool)(1 ? (void*)&x : 0))
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EVAL_EXPR(5, (_Bool)(int[]){0})
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struct y {int x,y;};
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EVAL_EXPR(6, (int)(1+(struct y*)0))
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EVAL_EXPR(7, (int)&((struct y*)0)->y)
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EVAL_EXPR(8, (_Bool)"asdf")
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EVAL_EXPR(9, !!&x)
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EVAL_EXPR(10, ((void)1, 12))
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void g0(void);
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EVAL_EXPR(11, (g0(), 12)) // expected-error {{must have a constant size}}
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EVAL_EXPR(12, 1.0&&2.0)
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EVAL_EXPR(13, x || 3.0) // expected-error {{must have a constant size}}
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unsigned int l_19 = 1;
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EVAL_EXPR(14, (1 ^ l_19) && 1); // expected-error {{fields must have a constant size}}
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void f()
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{
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int a;
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EVAL_EXPR(15, (_Bool)&a);
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}
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// FIXME: Turn into EVAL_EXPR test once we have more folding.
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_Complex float g16 = (1.0f + 1.0fi);
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// ?: in constant expressions.
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int g17[(3?:1) - 2];
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EVAL_EXPR(18, ((int)((void*)10 + 10)) == 20 ? 1 : -1);
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struct s {
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int a[(int)-1.0f]; // expected-error {{'a' declared as an array with a negative size}}
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};
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EVAL_EXPR(19, ((int)&*(char*)10 == 10 ? 1 : -1));
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EVAL_EXPR(20, __builtin_constant_p(*((int*) 10)));
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EVAL_EXPR(21, (__imag__ 2i) == 2 ? 1 : -1);
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EVAL_EXPR(22, (__real__ (2i+3)) == 3 ? 1 : -1);
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int g23[(int)(1.0 / 1.0)] = { 1 };
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int g24[(int)(1.0 / 1.0)] = { 1 , 2 }; // expected-warning {{excess elements in array initializer}}
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int g25[(int)(1.0 + 1.0)], g26 = sizeof(g25);
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EVAL_EXPR(26, (_Complex double)0 ? -1 : 1)
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EVAL_EXPR(27, (_Complex int)0 ? -1 : 1)
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EVAL_EXPR(28, (_Complex double)1 ? 1 : -1)
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EVAL_EXPR(29, (_Complex int)1 ? 1 : -1)
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// PR4027 + rdar://6808859
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struct a { int x, y; };
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static struct a V2 = (struct a)(struct a){ 1, 2};
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static const struct a V1 = (struct a){ 1, 2};
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EVAL_EXPR(30, (int)(_Complex float)((1<<30)-1) == (1<<30) ? 1 : -1)
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EVAL_EXPR(31, (int*)0 == (int*)0 ? 1 : -1)
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EVAL_EXPR(32, (int*)0 != (int*)0 ? -1 : 1)
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EVAL_EXPR(33, (void*)0 - (void*)0 == 0 ? 1 : -1)
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void foo(void) {}
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EVAL_EXPR(34, (foo == (void *)0) ? -1 : 1)
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// No PR. Mismatched bitwidths lead to a crash on second evaluation.
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const _Bool constbool = 0;
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EVAL_EXPR(35, constbool)
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EVAL_EXPR(36, constbool)
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EVAL_EXPR(37, (1,2.0) == 2.0 ? 1 : -1)
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EVAL_EXPR(38, __builtin_expect(1,1) == 1 ? 1 : -1)
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// PR7884
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EVAL_EXPR(39, __real__(1.f) == 1 ? 1 : -1)
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EVAL_EXPR(40, __imag__(1.f) == 0 ? 1 : -1)
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// From gcc testsuite
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EVAL_EXPR(41, (int)(1+(_Complex unsigned)2))
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// rdar://8875946
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void rdar8875946() {
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double _Complex P;
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float _Complex P2 = 3.3f + P;
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}
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double d = (d = 0.0); // expected-error {{not a compile-time constant}}
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double d2 = ++d; // expected-error {{not a compile-time constant}}
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int n = 2;
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int intLvalue[*(int*)((long)&n ?: 1)] = { 1, 2 }; // expected-error {{variable length array}}
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union u { int a; char b[4]; };
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char c = ((union u)(123456)).b[0]; // expected-error {{not a compile-time constant}}
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extern const int weak_int __attribute__((weak));
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const int weak_int = 42;
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int weak_int_test = weak_int; // expected-error {{not a compile-time constant}}
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int literalVsNull1 = "foo" == 0;
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int literalVsNull2 = 0 == "foo";
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// PR11385.
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int castViaInt[*(int*)(unsigned long)"test"]; // expected-error {{variable length array}}
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// PR11391.
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struct PR11391 { _Complex float f; } pr11391;
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EVAL_EXPR(42, __builtin_constant_p(pr11391.f = 1))
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// PR12043
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float varfloat;
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const float constfloat = 0;
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EVAL_EXPR(43, varfloat && constfloat) // expected-error {{must have a constant size}}
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// <rdar://problem/10962435>
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EVAL_EXPR(45, ((char*)-1) + 1 == 0 ? 1 : -1)
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EVAL_EXPR(46, ((char*)-1) + 1 < (char*) -1 ? 1 : -1)
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EVAL_EXPR(47, &x < &x + 1 ? 1 : -1)
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EVAL_EXPR(48, &x != &x - 1 ? 1 : -1)
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EVAL_EXPR(49, &x < &x - 100 ? 1 : -1) // expected-error {{must have a constant size}}
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extern struct Test50S Test50;
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EVAL_EXPR(50, &Test50 < (struct Test50S*)((unsigned long)&Test50 + 10)) // expected-error {{must have a constant size}}
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// <rdar://problem/11874571>
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EVAL_EXPR(51, 0 != (float)1e99)
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// PR21945
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void PR21945() { int i = (({}), 0l); }
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void PR24622();
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struct PR24622 {} pr24622;
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EVAL_EXPR(52, &pr24622 == (void *)&PR24622); // expected-error {{must have a constant size}}
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// We evaluate these by providing 2s' complement semantics in constant
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// expressions, like we do for integers.
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void *PR28739a = (__int128)(unsigned long)-1 + &PR28739a;
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void *PR28739b = &PR28739b + (__int128)(unsigned long)-1;
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__int128 PR28739c = (&PR28739c + (__int128)(unsigned long)-1) - &PR28739c;
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void *PR28739d = &(&PR28739d)[(__int128)(unsigned long)-1];
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struct PR35214_X {
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int k;
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int arr[];
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};
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int PR35214_x;
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int PR35214_y = ((struct PR35214_X *)&PR35214_x)->arr[1]; // expected-error {{not a compile-time constant}}
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int *PR35214_z = &((struct PR35214_X *)&PR35214_x)->arr[1]; // ok, &PR35214_x + 2
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