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This test is unsupported due to problems I assume with debug info,
but even if we solve that, the formatting elements aren't working
properly.
https://github.com/llvm/llvm-project/issues/143149
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Adds new frame-format variables and implements them in the CPlusPlusLanguage plugin.
We use the `DemangledNameInfo` type to retrieve the necessary part of the demangled name.
https://github.com/llvm/llvm-project/pull/131836
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available (#135343)
When a frame is inlined, LLDB will display its name in backtraces as
follows:
```
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.3
* frame #0: 0x0000000100000398 a.out`func() [inlined] baz(x=10) at inline.cpp:1:42
frame #1: 0x0000000100000398 a.out`func() [inlined] bar() at inline.cpp:2:37
frame #2: 0x0000000100000398 a.out`func() at inline.cpp:4:15
frame #3: 0x00000001000003c0 a.out`main at inline.cpp:7:5
frame #4: 0x000000026eb29ab8 dyld`start + 6812
```
The longer the names get the more confusing this gets because the first
function name that appears is the parent frame. My assumption (which may
need some more surveying) is that for the majority of cases we only care
about the actual frame name (not the parent). So this patch removes all
the special logic that prints the parent frame.
Another quirk of the current format is that the inlined frame name does
not abide by the `${function.name-XXX}` format variables. We always just
print the raw demangled name. With this patch, we would format the
inlined frame name according to the `frame-format` setting (see the
test-cases).
If we really want to have the `parentFrame [inlined] inlinedFrame`
format, we could expose it through a new `frame-format` variable (e..g.,
`${function.inlined-at-name}` and let the user decide where to place
things.
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This fixes missing inlined function names when formatting frame and the
`Block` in `SymbolContext` is a lexical block (e.g.
`DW_TAG_lexical_block` in Dwarf).
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