File: debug-info-struct-align.cpp

package info (click to toggle)
llvm-toolchain-19 1%3A19.1.7-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,998,520 kB
  • sloc: cpp: 6,951,680; ansic: 1,486,157; asm: 913,598; python: 232,024; f90: 80,126; objc: 75,281; lisp: 37,276; pascal: 16,990; sh: 10,009; ml: 5,058; perl: 4,724; awk: 3,523; makefile: 3,167; javascript: 2,504; xml: 892; fortran: 664; cs: 573
file content (35 lines) | stat: -rw-r--r-- 1,023 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
 
//  Test for debug info related to DW_AT_alignment attribute in the struct type.
// RUN: %clang_cc1 -dwarf-version=5 -debug-info-kind=standalone -emit-llvm %s -o - | FileCheck %s

// CHECK-DAG: DICompositeType(tag: DW_TAG_structure_type, name: "MyType", {{.*}}, align: 32
// CHECK-DAG: DICompositeType(tag: DW_TAG_structure_type, name: "MyType1", {{.*}}, align: 8
// CHECK-DAG: DICompositeType(tag: DW_TAG_structure_type, name: "MyType2", {{.*}}, align: 8

struct MyType {
  int m;
} __attribute__((aligned(1)));
MyType mt;

static_assert(alignof(MyType) == 4, "alignof MyType is wrong");

struct MyType1 {
  int m;
} __attribute__((packed, aligned(1)));
MyType1 mt1;

static_assert(alignof(MyType1) == 1, "alignof MyType1 is wrong");

struct MyType2 {
  __attribute__((packed)) int m;
} __attribute__((aligned(1)));
MyType2 mt2;

static_assert(alignof(MyType2) == 1, "alignof MyType2 is wrong");

#pragma pack(1)
struct MyType3 {
  int m;
};
MyType3 mt3;

static_assert(alignof(MyType3) == 1, "alignof MyType3 is wrong");