00820abf02
and as artificial local variables in the debug info. This is a follow-up to r236059. We can't get rid of the local variables entirely because the gdb buildbot depends on them, but we can mark them as artificial while still emitting the correct debug info. As I learned from review comments other compilers also follow this model. A paired commit in LLVM temporarily relaxes the debug info verifier to not check the integrity of DW_OP_bit_pieces of artificial variables. rdar://problem/20730771 llvm-svn: 236125
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
// RUN: %clang_cc1 -emit-llvm -gdwarf-4 -triple x86_64-linux-gnu %s -o - | FileCheck %s
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// Make sure that we emit a global variable for each of the members of the
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// anonymous union.
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static union {
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int c;
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int d;
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union {
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int a;
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};
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struct {
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int b;
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};
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};
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int test_it() {
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c = 1;
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d = 2;
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a = 4;
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return (c == 1);
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}
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void foo() {
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union {
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int i;
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char c;
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};
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i = 8;
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}
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// CHECK: [[FILE:.*]] = !DIFile(filename: "{{.*}}debug-info-anon-union-vars.cpp",
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// CHECK: !DIGlobalVariable(name: "c",{{.*}} file: [[FILE]], line: 6,{{.*}} isLocal: true, isDefinition: true
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// CHECK: !DIGlobalVariable(name: "d",{{.*}} file: [[FILE]], line: 6,{{.*}} isLocal: true, isDefinition: true
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// CHECK: !DIGlobalVariable(name: "a",{{.*}} file: [[FILE]], line: 6,{{.*}} isLocal: true, isDefinition: true
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// CHECK: !DIGlobalVariable(name: "b",{{.*}} file: [[FILE]], line: 6,{{.*}} isLocal: true, isDefinition: true
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// CHECK: !DILocalVariable(tag: DW_TAG_auto_variable, name: "i", {{.*}}, flags: DIFlagArtificial
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// CHECK: !DILocalVariable(tag: DW_TAG_auto_variable, name: "c", {{.*}}, flags: DIFlagArtificial
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// CHECK: !DILocalVariable(
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// CHECK-NOT: name:
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// CHECK: type: ![[UNION:[0-9]+]]
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// CHECK: ![[UNION]] = !DICompositeType(tag: DW_TAG_union_type,
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// CHECK-NOT: name:
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// CHECK: elements
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "i", scope: ![[UNION]],
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "c", scope: ![[UNION]],
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