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llvm-project/clang/test/CodeGen/arm-apcs-zerolength-bitfield.c

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For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
// RUN: %clang_cc1 -target-abi apcs-gnu -triple armv7-apple-darwin10 %s -verify
Add partial support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a non-bitfield member. E.g., struct t4 { int foo : 1; long : 0; char bar; }; Part of rdar://9859156 llvm-svn: 136858
2011-08-04 09:21:14 +08:00
//
// Note: gcc forces the alignment to 4 bytes, regardless of the type of the
// zero length bitfield.
// rdar://9859156
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
#include <stddef.h>
struct t1
{
int foo : 1;
char : 0;
char bar;
};
Add partial support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a non-bitfield member. E.g., struct t4 { int foo : 1; long : 0; char bar; }; Part of rdar://9859156 llvm-svn: 136858
2011-08-04 09:21:14 +08:00
static int arr1_offset[(offsetof(struct t1, bar) == 4) ? 0 : -1];
static int arr1_sizeof[(sizeof(struct t1) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t2
{
int foo : 1;
short : 0;
char bar;
};
Add partial support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a non-bitfield member. E.g., struct t4 { int foo : 1; long : 0; char bar; }; Part of rdar://9859156 llvm-svn: 136858
2011-08-04 09:21:14 +08:00
static int arr2_offset[(offsetof(struct t2, bar) == 4) ? 0 : -1];
static int arr2_sizeof[(sizeof(struct t2) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t3
{
int foo : 1;
int : 0;
char bar;
};
Add partial support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a non-bitfield member. E.g., struct t4 { int foo : 1; long : 0; char bar; }; Part of rdar://9859156 llvm-svn: 136858
2011-08-04 09:21:14 +08:00
static int arr3_offset[(offsetof(struct t3, bar) == 4) ? 0 : -1];
static int arr3_sizeof[(sizeof(struct t3) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t4
{
int foo : 1;
long : 0;
char bar;
};
Add partial support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a non-bitfield member. E.g., struct t4 { int foo : 1; long : 0; char bar; }; Part of rdar://9859156 llvm-svn: 136858
2011-08-04 09:21:14 +08:00
static int arr4_offset[(offsetof(struct t4, bar) == 4) ? 0 : -1];
static int arr4_sizeof[(sizeof(struct t4) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t5
{
int foo : 1;
long long : 0;
char bar;
};
Add partial support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a non-bitfield member. E.g., struct t4 { int foo : 1; long : 0; char bar; }; Part of rdar://9859156 llvm-svn: 136858
2011-08-04 09:21:14 +08:00
static int arr5_offset[(offsetof(struct t5, bar) == 4) ? 0 : -1];
static int arr5_sizeof[(sizeof(struct t5) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t6
{
int foo : 1;
char : 0;
char bar : 1;
char bar2;
};
Add support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a bitfield member. E.g., struct t4 { char foo; long : 0; char bar : 1; }; rdar://9859156 llvm-svn: 136991
2011-08-06 06:38:04 +08:00
static int arr6_offset[(offsetof(struct t6, bar2) == 5) ? 0 : -1];
static int arr6_sizeof[(sizeof(struct t6) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t7
{
int foo : 1;
short : 0;
char bar1 : 1;
char bar2;
};
Add support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a bitfield member. E.g., struct t4 { char foo; long : 0; char bar : 1; }; rdar://9859156 llvm-svn: 136991
2011-08-06 06:38:04 +08:00
static int arr7_offset[(offsetof(struct t7, bar2) == 5) ? 0 : -1];
static int arr7_sizeof[(sizeof(struct t7) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t8
{
int foo : 1;
int : 0;
char bar1 : 1;
char bar2;
};
Add support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a bitfield member. E.g., struct t4 { char foo; long : 0; char bar : 1; }; rdar://9859156 llvm-svn: 136991
2011-08-06 06:38:04 +08:00
static int arr8_offset[(offsetof(struct t8, bar2) == 5) ? 0 : -1];
static int arr8_sizeof[(sizeof(struct t8) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t9
{
int foo : 1;
long : 0;
char bar1 : 1;
char bar2;
};
Add support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a bitfield member. E.g., struct t4 { char foo; long : 0; char bar : 1; }; rdar://9859156 llvm-svn: 136991
2011-08-06 06:38:04 +08:00
static int arr9_offset[(offsetof(struct t9, bar2) == 5) ? 0 : -1];
static int arr9_sizeof[(sizeof(struct t9) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t10
{
int foo : 1;
long long : 0;
char bar1 : 1;
char bar2;
};
Add support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a bitfield member. E.g., struct t4 { char foo; long : 0; char bar : 1; }; rdar://9859156 llvm-svn: 136991
2011-08-06 06:38:04 +08:00
static int arr10_offset[(offsetof(struct t10, bar2) == 5) ? 0 : -1];
static int arr10_sizeof[(sizeof(struct t10) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
struct t11
{
int foo : 1;
long long : 0;
char : 0;
char bar1 : 1;
char bar2;
};
Add support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a bitfield member. E.g., struct t4 { char foo; long : 0; char bar : 1; }; rdar://9859156 llvm-svn: 136991
2011-08-06 06:38:04 +08:00
static int arr11_offset[(offsetof(struct t11, bar2) == 5) ? 0 : -1];
static int arr11_sizeof[(sizeof(struct t11) == 8) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
Add partial support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a non-bitfield member. E.g., struct t4 { int foo : 1; long : 0; char bar; }; Part of rdar://9859156 llvm-svn: 136858
2011-08-04 09:21:14 +08:00
struct t12
{
int foo : 1;
char : 0;
long long : 0;
char : 0;
char bar;
};
static int arr12_offset[(offsetof(struct t12, bar) == 4) ? 0 : -1];
static int arr12_sizeof[(sizeof(struct t12) == 8) ? 0 : -1];
Add support for using anonymous bitfields (e.g., int : 0) to enforce alignment. This fixes cases where the anonymous bitfield is followed by a bitfield member. E.g., struct t4 { char foo; long : 0; char bar : 1; }; rdar://9859156 llvm-svn: 136991
2011-08-06 06:38:04 +08:00
struct t13
{
char foo;
long : 0;
char bar;
};
static int arr13_offset[(offsetof(struct t13, bar) == 4) ? 0 : -1];
static int arr13_sizeof[(sizeof(struct t13) == 8) ? 0 : -1];
struct t14
{
char foo1;
int : 0;
char foo2 : 1;
short foo3 : 16;
char : 0;
short foo4 : 16;
char bar1;
int : 0;
char bar2;
};
static int arr14_bar1_offset[(offsetof(struct t14, bar1) == 10) ? 0 : -1];
static int arr14_bar2_offset[(offsetof(struct t14, bar2) == 12) ? 0 : -1];
static int arr14_sizeof[(sizeof(struct t14) == 16) ? 0 : -1];
struct t15
{
char foo;
char : 0;
int : 0;
char bar;
long : 0;
char : 0;
};
static int arr15_offset[(offsetof(struct t15, bar) == 4) ? 0 : -1];
static int arr15_sizeof[(sizeof(struct t15) == 8) ? 0 : -1];
struct t16
{
long : 0;
char bar;
};
static int arr16_offset[(offsetof(struct t16, bar) == 0) ? 0 : -1];
static int arr16_sizeof[(sizeof(struct t16) == 4) ? 0 : -1];
struct t17
{
char foo;
long : 0;
long : 0;
char : 0;
char bar;
};
static int arr17_offset[(offsetof(struct t17, bar) == 4) ? 0 : -1];
static int arr17_sizeof[(sizeof(struct t17) == 8) ? 0 : -1];
struct t18
{
long : 0;
long : 0;
char : 0;
};
static int arr18_sizeof[(sizeof(struct t18) == 0) ? 0 : -1];
struct t19
{
char foo1;
long foo2 : 1;
char : 0;
long foo3 : 32;
char bar;
};
static int arr19_offset[(offsetof(struct t19, bar) == 8) ? 0 : -1];
static int arr19_sizeof[(sizeof(struct t19) == 12) ? 0 : -1];
struct t20
{
short : 0;
int foo : 1;
long : 0;
char bar;
};
static int arr20_offset[(offsetof(struct t20, bar) == 4) ? 0 : -1];
static int arr20_sizeof[(sizeof(struct t20) == 8) ? 0 : -1];
struct t21
{
short : 0;
int foo1 : 1;
char : 0;
int foo2 : 16;
long : 0;
char bar1;
int bar2;
long bar3;
char foo3 : 8;
char : 0;
long : 0;
int foo4 : 32;
short foo5: 1;
long bar4;
short foo6: 16;
short foo7: 16;
short foo8: 16;
};
static int arr21_bar1_offset[(offsetof(struct t21, bar1) == 8) ? 0 : -1];
static int arr21_bar2_offset[(offsetof(struct t21, bar2) == 12) ? 0 : -1];
static int arr21_bar3_offset[(offsetof(struct t21, bar3) == 16) ? 0 : -1];
static int arr21_bar4_offset[(offsetof(struct t21, bar4) == 32) ? 0 : -1];
static int arr21_sizeof[(sizeof(struct t21) == 44) ? 0 : -1];
For APCS the alignment of bitfield types is *not* respected when laying out structures. Alignment can be enforced with the use of anonymous bitfields (e.g., int :0), but this is not currently supported. Add this test case to document the current state, which will hopefully be fixed shortly. llvm-svn: 136848
2011-08-04 08:19:13 +08:00
int main() {
return 0;
}