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// RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s
struct foo {
void *a;
int b;
};
// CHECK: @u = global %union.anon zeroinitializer
union { int i; float f; } u = { };
// CHECK: @u2 = global { i32, [4 x i8] } { i32 0, [4 x i8] undef }
union { int i; double f; } u2 = { };
// CHECK: @u3 = global %union.anon.1 zeroinitializer
union { double f; int i; } u3 = { };
// CHECK: @b = global [2 x i32] [i32 0, i32 22]
int b[2] = {
[1] = 22
};
// PR6955
struct ds {
struct {
struct {
short a;
};
short b;
struct {
short c;
};
};
};
// Traditional C anonymous member init
struct ds ds0 = { { { .a = 0 } } };
// C1X lookup-based anonymous member init cases
struct ds ds1 = { { .a = 1 } };
struct ds ds2 = { { .b = 1 } };
struct ds ds3 = { .a = 0 };
// CHECK: @ds4 = global %struct.ds { %struct.anon.3 { %struct.anon zeroinitializer, i16 0, %struct.anon.2 { i16 1 } } }
struct ds ds4 = { .c = 1 };
struct ds ds5 = { { { .a = 0 } }, .b = 1 };
struct ds ds6 = { { .a = 0, .b = 1 } };
// CHECK: @ds7 = global %struct.ds { %struct.anon.3 { %struct.anon { i16 2 }, i16 3, %struct.anon.2 zeroinitializer } }
struct ds ds7 = {
{ {
.a = 1
} },
.a = 2,
.b = 3
};
// <rdar://problem/10465114>
struct overwrite_string_struct1 {
__typeof(L"foo"[0]) L[6];
int M;
} overwrite_string1[] = { { { L"foo" }, 1 }, [0].L[2] = L'x'};
// CHECK: [6 x i32] [i32 102, i32 111, i32 120, i32 0, i32 0, i32 0], i32 1
struct overwrite_string_struct2 {
char L[6];
int M;
} overwrite_string2[] = { { { "foo" }, 1 }, [0].L[2] = 'x'};
// CHECK: [6 x i8] c"fox\00\00\00", i32 1
struct overwrite_string_struct3 {
char L[3];
int M;
} overwrite_string3[] = { { { "foo" }, 1 }, [0].L[2] = 'x'};
// CHECK: [3 x i8] c"fox", i32 1
struct overwrite_string_struct4 {
char L[3];
int M;
} overwrite_string4[] = { { { "foobar" }, 1 }, [0].L[2] = 'x'};
// CHECK: [3 x i8] c"fox", i32 1
struct overwrite_string_struct5 {
char L[6];
int M;
} overwrite_string5[] = { { { "foo" }, 1 }, [0].L[4] = 'y'};
// CHECK: [6 x i8] c"foo\00y\00", i32 1
// CHECK: @u1 = {{.*}} { i32 65535 }
union u_FFFF { char c; long l; } u1 = { .l = 0xFFFF };
/// PR16644
typedef union u_16644 {
struct s_16644 {
int zero;
int one;
int two;
int three;
} a;
int b[4];
} union_16644_t;
// CHECK: @union_16644_instance_0 = {{.*}} { i32 0, i32 0, i32 0, i32 3 } }
union_16644_t union_16644_instance_0 =
{
.b[0] = 0,
.a.one = 1,
.b[2] = 2,
.a.three = 3,
};
// CHECK: @union_16644_instance_1 = {{.*}} [i32 10, i32 0, i32 0, i32 0]
union_16644_t union_16644_instance_1 =
{
.a.three = 13,
.b[2] = 12,
.a.one = 11,
.b[0] = 10,
};
// CHECK: @union_16644_instance_2 = {{.*}} [i32 0, i32 20, i32 0, i32 0]
union_16644_t union_16644_instance_2 =
{
.a.one = 21,
.b[1] = 20,
};
// CHECK: @union_16644_instance_3 = {{.*}} { i32 0, i32 31, i32 0, i32 0 }
union_16644_t union_16644_instance_3 =
{
.b[1] = 30,
.a = {
.one = 31
}
};
// CHECK: @union_16644_instance_4 = {{.*}} { i32 5, i32 2, i32 0, i32 0 } {{.*}} [i32 0, i32 4, i32 0, i32 0]
union_16644_t union_16644_instance_4[2] =
{
[0].a.one = 2,
[1].a.zero = 3,
[0].a.zero = 5,
[1].b[1] = 4
};
// CHECK: @lab = global { [4 x i8], i32 } { [4 x i8] undef, i32 123 }
struct leading_anon_bitfield { int : 32; int n; } lab = { .n = 123 };
void test1(int argc, char **argv)
{
// CHECK: internal global %struct.foo { i8* null, i32 1024 }
static struct foo foo = {
.b = 1024,
};
// CHECK: bitcast %union.anon.4* %u2
// CHECK: call void @llvm.memset
union { int i; float f; } u2 = { };
// CHECK-NOT: call void @llvm.memset
union { int i; float f; } u3;
// CHECK: ret void
}
// PR7151
struct S {
int nkeys;
int *keys;
union {
void *data;
};
};
void test2() {
struct S *btkr;
*btkr = (struct S) {
.keys = 0,
{ .data = 0 },
};
}
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