a2c9146da1
Since #189401, LLVM and Clang generate `S_DEFRANGE_REGISTER_REL_INDIR` for indirect locations. This adds support in LLDB. The offset added after dereferencing is signed here - unlike in `S_REGREL32_INDIR` (at least that's the assumption). So I updated `MakeRegisterBasedIndirectLocationExpressionInternal` to handle the signedness. This is the reason the MSVC test was changed here. I didn't find a test case where LLVM emits the record with the `VFRAME` register. Other than that, the clang test is similar to the MSVC one except that the locations are slightly different.
44 lines
1.2 KiB
Plaintext
44 lines
1.2 KiB
Plaintext
# REQUIRES: lld, msvc, target-windows
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# Test that LLDB can show variables introduced in C++ 17 structured bindings
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# when compiled with MSVC.
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# RUN: split-file %s %t
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# RUN: %build --compiler=msvc --arch=64 --std=c++17 --nodefaultlib -o %t.exe -- %t/main.cpp
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# RUN: lldb-test symbols %t.exe | FileCheck %s --check-prefix=SYMBOLS
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# RUN: %lldb -f %t.exe -s %t/commands.input | FileCheck %s --check-prefix=LLDB
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#--- main.cpp
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struct Foo { int a; int b; };
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int main() {
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Foo f{1, 2};
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auto&[a, b] = f;
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return a + b; // break here
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}
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#--- commands.input
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br set -p "break here"
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r
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v f
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v a
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v b
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q
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# SYMBOLS: Function{{.*}}, demangled = main, type =
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# SYMBOLS-NEXT: Block{{.*}}, ranges =
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# SYMBOLS-NEXT: Variable{{.*}}, name = "f", type = {{.*}} (Foo), scope = local, location =
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# SYMBOLS-NEXT: Variable{{.*}}, name = "b", type = {{.*}} (int), scope = local, location = DW_OP_breg{{.*}}, DW_OP_deref, DW_OP_consts {{[+-][0-9]+}}, DW_OP_plus
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# SYMBOLS-NEXT: Variable{{.*}}, name = "a", type = {{.*}} (int), scope = local, location = DW_OP_breg{{.*}}, DW_OP_deref, DW_OP_consts +0, DW_OP_plus
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# LLDB: (lldb) v f
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# LLDB-NEXT: (Foo) f = (a = 1, b = 2)
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# LLDB-NEXT: (lldb) v a
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# LLDB-NEXT: (int) a = 1
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# LLDB-NEXT: (lldb) v b
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# LLDB-NEXT: (int) b = 2
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