debug-info-codeview-unnamed.cpp
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -debug-info-kind=limited -S -emit-llvm -std=c++11 -o - %s | FileCheck --check-prefix LINUX %s
// RUN: %clang_cc1 -triple x86_64-windows-msvc -debug-info-kind=limited -gcodeview -S -emit-llvm -std=c++11 -o - %s | FileCheck --check-prefix MSVC %s
int main(int argc, char* argv[], char* arge[]) {
//
// In CodeView, the LF_MFUNCTION entry for "bar()" refers to the forward
// reference of the unnamed struct. Visual Studio requires a unique
// identifier to match the LF_STRUCTURE forward reference to the definition.
//
struct { void bar() {} } one;
//
// LINUX: !{{[0-9]+}} = !DILocalVariable(name: "one"
// LINUX-SAME: type: [[TYPE_OF_ONE:![0-9]+]]
// LINUX-SAME: )
// LINUX: [[TYPE_OF_ONE]] = distinct !DICompositeType(
// LINUX-SAME: tag: DW_TAG_structure_type
// LINUX-NOT: name:
// LINUX-NOT: identifier:
// LINUX-SAME: )
//
// MSVC: !{{[0-9]+}} = !DILocalVariable(name: "one"
// MSVC-SAME: type: [[TYPE_OF_ONE:![0-9]+]]
// MSVC-SAME: )
// MSVC: [[TYPE_OF_ONE]] = distinct !DICompositeType
// MSVC-SAME: tag: DW_TAG_structure_type
// MSVC-SAME: name: "<unnamed-type-one>"
// MSVC-SAME: identifier: ".?AU<unnamed-type-one>@?1??main@@9@"
// MSVC-SAME: )
// In CodeView, the LF_POINTER entry for "ptr2unnamed" refers to the forward
// reference of the unnamed struct. Visual Studio requires a unique
// identifier to match the LF_STRUCTURE forward reference to the definition.
//
struct { int bar; } two = { 42 };
int decltype(two)::*ptr2unnamed = &decltype(two)::bar;
//
// LINUX: !{{[0-9]+}} = !DILocalVariable(name: "two"
// LINUX-SAME: type: [[TYPE_OF_TWO:![0-9]+]]
// LINUX-SAME: )
// LINUX: [[TYPE_OF_TWO]] = distinct !DICompositeType(
// LINUX-SAME: tag: DW_TAG_structure_type
// LINUX-NOT: name:
// LINUX-NOT: identifier:
// LINUX-SAME: )
//
// MSVC: !{{[0-9]+}} = !DILocalVariable(name: "two"
// MSVC-SAME: type: [[TYPE_OF_TWO:![0-9]+]]
// MSVC-SAME: )
// MSVC: [[TYPE_OF_TWO]] = distinct !DICompositeType
// MSVC-SAME: tag: DW_TAG_structure_type
// MSVC-SAME: name: "<unnamed-type-two>"
// MSVC-SAME: identifier: ".?AU<unnamed-type-two>@?2??main@@9@"
// MSVC-SAME: )
// In DWARF, named structures which are not externally visibile do not
// require an identifier. In CodeView, named structures are given an
// identifier.
//
struct named { int bar; int named::* p2mem; } three = { 42, &named::bar };
//
// LINUX: !{{[0-9]+}} = !DILocalVariable(name: "three"
// LINUX-SAME: type: [[TYPE_OF_THREE:![0-9]+]]
// LINUX-SAME: )
// LINUX: [[TYPE_OF_THREE]] = distinct !DICompositeType(
// LINUX-SAME: tag: DW_TAG_structure_type
// LINUX-SAME: name: "named"
// LINUX-NOT: identifier:
// LINUX-SAME: )
//
// MSVC: !{{[0-9]+}} = !DILocalVariable(name: "three"
// MSVC-SAME: type: [[TYPE_OF_THREE:![0-9]+]]
// MSVC-SAME: )
// MSVC: [[TYPE_OF_THREE]] = distinct !DICompositeType
// MSVC-SAME: tag: DW_TAG_structure_type
// MSVC-SAME: name: "named"
// MSVC-SAME: identifier: ".?AUnamed@?1??main@@9@"
// MSVC-SAME: )
// In CodeView, the LF_MFUNCTION entry for the lambda "operator()" routine
// refers to the forward reference of the unnamed LF_CLASS for the lambda.
// Visual Studio requires a unique identifier to match the forward reference
// of the LF_CLASS to its definition.
//
auto four = [argc](int i) -> int { return argc == i ? 1 : 0; };
//
// LINUX: !{{[0-9]+}} = !DILocalVariable(name: "four"
// LINUX-SAME: type: [[TYPE_OF_FOUR:![0-9]+]]
// LINUX-SAME: )
// LINUX: [[TYPE_OF_FOUR]] = distinct !DICompositeType(
// LINUX-SAME: tag: DW_TAG_class_type
// LINUX-NOT: name:
// LINUX-NOT: identifier:
// LINUX-SAME: )
//
// MSVC: !{{[0-9]+}} = !DILocalVariable(name: "four"
// MSVC-SAME: type: [[TYPE_OF_FOUR:![0-9]+]]
// MSVC-SAME: )
// MSVC: [[TYPE_OF_FOUR]] = distinct !DICompositeType
// MSVC-SAME: tag: DW_TAG_class_type
// MSVC-NOT: name:
// MSVC-SAME: identifier: ".?AV<lambda_0>@?0??main@@9@"
// MSVC-SAME: )
return 0;
}