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[DWARF] Add one more type unit test 

This test passes already, but it seems interesting to test that we can
jump between type units in different dwo files nonetheless.

llvm-svn: 364890
This commit is contained in:
Pavel Labath 2019-07-02 07:57:08 +00:00
parent 4f883f1c39
commit a1c64dcdec
1 changed files with 37 additions and 0 deletions
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37
lldb/lit/SymbolFile/DWARF/debug-types-dwo-cross-reference.cpp Normal file
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// Test that we can jump from a type unit in one dwo file into a type unit in a
// different dwo file.
// REQUIRES: lld
// RUN: %clang %s -target x86_64-pc-linux -fno-standalone-debug -g \
// RUN: -fdebug-types-section -gsplit-dwarf -c -o %t1.o -DONE
// RUN: %clang %s -target x86_64-pc-linux -fno-standalone-debug -g \
// RUN: -fdebug-types-section -gsplit-dwarf -c -o %t2.o -DTWO
// RUN: llvm-dwarfdump %t1.dwo -debug-types | FileCheck --check-prefix=ONEUNIT %s
// RUN: llvm-dwarfdump %t2.dwo -debug-types | FileCheck --check-prefix=ONEUNIT %s
// RUN: ld.lld %t1.o %t2.o -o %t
// RUN: %lldb %t -o "target var a b **b.a" -b | FileCheck %s
// ONEUNIT-COUNT-1: DW_TAG_type_unit
// CHECK: (const A) a = (a = 42)
// CHECK: (const B) b = {
// CHECK-NEXT: a = 0x{{.*}}
// CHECK-NEXT: }
// CHECK: (const A) **b.a = (a = 42)
struct A;
extern const A *a_ptr;
#ifdef ONE
struct A {
int a = 42;
};
constexpr A a{};
const A *a_ptr = &a;
#else
struct B {
const A **a;
};
extern constexpr B b{&a_ptr};
#endif